Keep sterile items sterile: if in doubt, it is not sterile; replace, never wipe.
Prevent harm in the environment: fall measures, restraints only as a last resort, RACE and PASS for fire.
Check the rights of medication administration, two identifiers and extra safeguards for high-alert drugs; report errors and near misses.
Prioritization & delegation
Method
Ask what will harm the patient soonest if nothing is done.
Apply ABC (C-A-B in cardiac arrest), then Maslow: physiological needs before safety, safety before psychological needs.
Compare the options: acute before chronic, unstable before stable, unexpected before expected, systemic before local, and check each finding against the patient’s baseline.
Assess before you act unless it is an emergency; then choose the step the others depend on.
For delegation, check the five rights: task, circumstance, person, directions and supervision. Assessment, teaching and evaluation stay with the RN.
Lab values & electrolytes
Method
Compare the value with the laboratory’s own reference range, then with the patient’s baseline and trend.
Check the sample: hemolysis, a delay, or blood drawn near an IV can give false results.
Link the value to its typical signs and to the drugs and conditions that cause it.
Look for interactions: low potassium or magnesium increases digoxin toxicity; dehydration raises lithium.
Act on the patient: assess, hold a drug if the level is unsafe, read back critical values and inform the prescriber.
Med-surg: cardiovascular & respiratory
Method
Name the problem: pump failure, blocked artery, rhythm, clot, airway narrowing, infection or a device problem.
Check the danger signs first: hypoxia, hypotension, chest pain, new confusion, a cold pulseless limb.
Match the oxygen to the patient: 94–98% for most, 88–92% for those at risk of CO₂ retention.
Link each drug to its test and its risk: warfarin and INR, heparin and aPTT and platelets, diuretics and potassium.
Choose the safe first action, then escalate and reassess.
Med-surg: neuro, endocrine & renal
Method
Check the glucose in every patient with new confusion, weakness or a seizure.
Use the level of consciousness as the earliest warning of brain trouble; pupils and Cushing’s triad come late.
For diabetes emergencies, separate DKA (ketones, acidosis) from HHS (very high osmolality, dehydration); give fluids first.
For sodium and water, decide whether ADH is in excess (SIADH) or missing (DI), and correct chronic changes slowly.
For kidney problems, sort the cause into pre-renal, intrinsic or post-renal, and watch potassium and fluid.
Med-surg: GI, perioperative & oncology
Method
Ask what could be hidden: internal bleeding, infection without fever, hypoventilation behind a normal SpO₂.
Use the timing after surgery to narrow the complications: bleeding in hours, chest problems in days, wound and leak problems later.
For pain, assess, treat with multimodal analgesia, reassess, and monitor sedation with every opioid.
For cancer patients, treat any illness during the nadir as neutropenic sepsis and know the oncological emergencies.
For burns, count only partial- and full-thickness areas, start the Parkland clock at the time of the burn and titrate to urine output.
Maternity & obstetric nursing
Method
Place the woman in time: weeks of pregnancy, stage of labour or day after birth, and decide what is normal at that point.
Look for the patient in danger: the mother, the fetus or the newborn, or more than one of them.
Link the finding to its cause: VEAL CHOP for decelerations, the four Ts for bleeding, BUBBLE-HE after birth.
Choose the action that improves blood flow and oxygen first (side-lying, stopping oxytocin, fundal massage), then escalate.
Pediatric nursing
Method
Note the child’s age first: it sets the normal vital signs, the milestones and the right pain scale.
Assess airway, breathing and circulation, remembering that children compensate and then deteriorate fast.
Match the action to the development stage and involve the family.
Check that the answer is safe for a child: weight-based, no aspirin in viral illness, no codeine under 12.
Mental health nursing
Method
Decide whether there is an immediate risk: suicide, violence, a drug emergency or a physical illness.
Act on safety first: observe, remove means, de-escalate, stop a harmful drug, get help.
Choose the therapeutic response: acknowledge feelings, present reality, avoid false reassurance and “why” questions.
Respect rights: the least restrictive option, consent and confidentiality with its limits.
Nursing math & unit conversions
Metric steps
1 kg = 1000 g, 1 g = 1000 mg, 1 mg = 1000 mcg, 1 L = 1000 mL
Weight and length
1 kg = 2.2 lb, 1 lb = 16 oz, 1 in = 2.54 cm, 1 ft = 12 in
Household measures
1 tsp = 5 mL, 1 tbsp = 15 mL, 1 fl oz = 30 mL, 1 cup = 8 fl oz = 240 mL
Read the pH: below 7.35 is acidosis, above 7.45 alkalosis.
Find the value that explains it: PaCO₂ moving opposite to the pH is respiratory, HCO₃⁻ moving with the pH is metabolic.
Look at the other value: normal means uncompensated, abnormal in the compensating direction means partial compensation, and a normal pH with both abnormal means full compensation.
In a metabolic acidosis, compare PaCO₂ with Winter’s formula, 1.5·HCO₃⁻ + 8 ± 2, and calculate the anion gap Na⁺ − (Cl⁻ + HCO₃⁻).
Check a high anion gap with the delta ratio and, when albumin is low, with the corrected gap.
ECG rhythm strip interpretation
Paper (25 mm/s, 10 mm/mV)
1 small box = 0.04 s, 1 large box = 0.20 s, 10 mm = 1 mV
Heart rate, regular rhythm
300 ÷ large boxes = 1500 ÷ small boxes = 60 ÷ RR (s)
Heart rate, irregular rhythm
QRS complexes in 6 s × 10
Normal PR interval
0.12–0.20 s
Normal QRS duration
< 0.12 s
QTc (Bazett)
QT/√RR
QTc (Fridericia)
QT/∛RR
QTc (Framingham)
QT + 154·(1 − RR)
Sinus rates
bradycardia < 60, normal 60–100, tachycardia > 100 /min
Escape rates
junctional 40–60, ventricular 20–40 /min
Fast rhythms
SVT 150–250 /min (narrow), VT > 100 /min (wide)
Method
Rate: for a regular rhythm divide 300 by the large boxes or 1500 by the small boxes between two R waves; for an irregular rhythm count the QRS complexes in 6 seconds and multiply by 10.
Rhythm: compare the R–R intervals. Equal is regular; a repeating pattern is regularly irregular; no pattern at all is irregularly irregular.
P waves: is there an upright P wave in lead II before every QRS, all alike? Look for fibrillatory or sawtooth waves, inverted P waves and P waves without a QRS.
PR interval: from the start of P to the start of the QRS, normally 0.12–0.20 s and constant. Watch whether it lengthens, stays fixed before a dropped beat, or varies at random.
QRS duration: below 0.12 s is narrow; 0.12 s or more is wide. Then name the rhythm, and for the QT use QTc = QT/√RR (Bazett) with times in seconds.
2Practice problems
1.Nursing fundamentalsMedium
Why should a patient wash and dry their hands before a fingerprick glucose test?
ASugar on the skin can give a falsely high reading
BWet hands give a falsely high reading
CClean hands make the finger bleed more slowly
DIt is only needed if the hands look dirty
2.Nursing fundamentalsHard
A patient opens their eyes only to pain, makes incomprehensible sounds and withdraws from a painful stimulus. What is the Glasgow Coma Scale score?
A6
B8
C11
D9
3.Infection control & patient safetyMedium
A small spill of blood is found on the floor. How should it be cleaned?
ALeave it until housekeeping arrives the next morning
BCover it with a clean sheet and keep working
CWear gloves, absorb the blood, then clean the area with an approved disinfectant
DWipe it up quickly with a dry cloth using bare hands, then wash the hands well
4.Infection control & patient safetyHard
A nurse has a needlestick from a patient known to have hepatitis C. Which statement about management is correct?
AThe hepatitis C vaccine series is started at once, with a booster dose six months later
BThere is no preventive drug, so baseline and follow-up testing are done to detect infection early
CHepatitis C immune globulin is given within 24 hours, followed by a booster dose
DNo follow-up is needed because hepatitis C does not spread by needles
5.Prioritization & delegationMedium
A nurse teaches a patient about levothyroxine. Which statement shows a need for further teaching?
A“I will take it at breakfast with my calcium tablet.”
B“I will take it on an empty stomach with a glass of water.”
C“I will keep taking it even when I feel well.”
D“I will take it at the same time each morning.”
6.Prioritization & delegationHard
Which patient’s planned discharge should the nurse question?
AA patient after a hernia repair who is passing urine and eating
BA patient two days after surgery with a new heart rate of 112/min and a temperature of 38.4 °C
CA patient with a stable cast who is walking safely with crutches
DA patient with pneumonia who has been without fever for 48 hours on oral antibiotics
7.Clinical nursingMedium
A patient's fluid balance chart shows intake of 1,200 mL and output of 2,300 mL over 24 hours. What does this indicate?
AA balanced fluid status
BA negative fluid balance of 1,100 mL
CA positive fluid balance of 1,100 mL
DA positive fluid balance of 3,500 mL
8.Clinical nursingHard
A patient with a COPD exacerbation remains acidotic with a high PaCO2 despite optimal medical treatment and controlled oxygen. Which treatment is usually considered next?
AStopping all oxygen therapy
BSedation to slow the breathing
C15 L/min oxygen via a non-rebreathe mask
DNon-invasive ventilation
9.Lab values & electrolytesMedium
A patient with chest pain that started one hour ago has a normal first troponin. What is the correct interpretation?
AThe patient can be discharged home straight away
BInfarction is ruled out, so no further troponin tests are needed
CTroponin is not useful in patients with chest pain
DInfarction is not ruled out; troponin is repeated per protocol
10.Lab values & electrolytesHard
A patient stopped long-term prednisone suddenly a week ago. Now: blood pressure 78/46 mm Hg, sodium 128 mEq/L, potassium 4.6 mEq/L, glucose 58 mg/dL (3.2 mmol/L). Which condition is most likely?
APrimary hyperaldosteronism (Conn syndrome)
BSyndrome of inappropriate ADH (SIADH)
CAcute adrenal insufficiency (adrenal crisis)
DCushing syndrome from steroid excess
11.PharmacologyMedium
An Rh-negative mother gives birth to an Rh-positive baby. When is anti-D immunoglobulin usually given?
AWithin 72 hours after the birth
BAt least two weeks after the birth
CIt is not needed if the baby is Rh-positive
DOnly at the start of the next pregnancy
12.PharmacologyHard
A patient starting sertraline is taught about the drug. Which statement shows a need for further teaching?
A"I may have some nausea at first."
B"If I feel better after a week, I can stop taking it."
C"It may take a few weeks to feel the full effect."
D"I will tell someone if I have thoughts of harming myself."
13.Med-surg: cardiovascular & respiratoryMedium
After a prescribed IV fluid bolus for hypotension, what should the nurse do next?
AStart a second fluid bolus straight away without checking anything
BStop all monitoring if the patient says they feel better
CWait until the next routine observations in four hours
DReassess heart rate, blood pressure, urine output and lung sounds
14.Med-surg: cardiovascular & respiratoryHard
Why is the cuff pressure of an endotracheal or tracheostomy tube checked regularly?
AThe cuff pressure directly controls the patient's oxygen saturation
BToo high a pressure damages the trachea; too low allows aspiration
CThe cuff must be kept fully deflated in every ventilated patient
DThe cuff pressure sets the ventilator's breathing rate
15.Med-surg: neuro, endocrine & renalMedium
A man starts finasteride for an enlarged prostate. Which statement is correct?
AIt works within hours by relaxing the bladder muscle
BIt lowers the blood pressure, so dizziness is very common
CIt takes months to work; pregnant women must not handle broken tablets
DIt is used only for a few days at a time
16.Med-surg: neuro, endocrine & renalHard
On day 6 after a subarachnoid haemorrhage, a patient becomes newly confused and develops weakness in one arm. The aneurysm was secured on day 1. What is the most likely cause?
ADelayed cerebral ischaemia from vasospasm
BRe-bleeding from the secured aneurysm
CHypoglycaemia from reduced eating
DNormal tiredness after major surgery
17.Med-surg: GI, perioperative & oncologyMedium
Why are carbohydrate drinks often given before surgery in enhanced recovery programmes?
ATo make the bowels open before the operation
BTo replace the need for any IV fluids afterwards
CTo reduce insulin resistance and improve recovery
DTo raise the blood pressure during the anaesthetic
18.Med-surg: GI, perioperative & oncologyHard
On day 2 after upper abdominal surgery, a patient has a temperature of 37.8 °C, SpO₂ 93% on air and reduced breath sounds at both bases. They have not used their incentive spirometer because of pain. What is the most appropriate nursing plan?
ABetter pain control, sitting up, deep breathing, mobilising and reporting
BStop all analgesia so that the patient can cough more strongly
CGive oxygen at 15 L/min and leave the patient to rest quietly
DKeep the patient in bed and restrict movement until the fever settles
19.Maternity & obstetric nursingMedium
Which drug is a known teratogen that must be stopped before a planned pregnancy?
AIsotretinoin
BFolic acid
CLevothyroxine
DParacetamol (acetaminophen)
20.Maternity & obstetric nursingHard
A newborn's left foot is turned inward and downward and cannot be moved to a normal position. What should the nurse tell the parents?
ASurgery is needed within the first day
BIt suggests clubfoot, treated early with casting
CIt is normal positioning in the uterus and needs no follow-up
DIt is caused by a lack of vitamin D
21.Pediatric nursingMedium
A child has tinea capitis (ringworm of the scalp). Which treatment is usually needed?
AShaving the head, with no medicine
BOral antibiotics such as amoxicillin
CA topical antifungal cream alone
DAn oral antifungal medicine
22.Pediatric nursingHard
A school-age child is to have surgery. Which approach to preparation best fits this age?
AExplain the procedure with simple diagrams, allow questions and involve the child in choices
BDiscuss everything with the parents but not with the child, so that the child is not frightened
CAvoid explaining because it will only cause fear
DUse only baby talk and toys meant for infants
23.Mental health nursingMedium
A 24-year-old woman with bipolar disorder is starting valproate. What is the most important teaching point?
AIt can seriously harm an unborn baby, so effective contraception and specialist advice are essential
BIt must be taken with grapefruit juice to be absorbed
CIt is safe in pregnancy and needs no special precautions
DIt will cause her to lose weight quickly, so she should eat extra meals and snacks every day
24.Mental health nursingHard
A voluntary patient who has no immediate risk of harm wants to leave the ward against medical advice. What is the correct general approach?
AExplain the risks, inform the team, document the discussion and respect their right to leave according to the law and policy
BTell the patient that staff will restrain them and bring them back to the ward if they try to leave without the doctor's permission
CHide the patient's belongings
DLock the door to stop the patient leaving
25.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A dose is charted at 13:15 (24-hour clock). Which entry is the same time on the 12-hour clock? Click it.
13:15
13:15 PM
212:15 PM
31:15 AM
41:15 PM
26.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). An infusion starts at 19:35 and finishes at 02:20 the next morning (24-hour clock). How many minutes t did it run?
19:3502:20
t = min
27.Dosage calculationsMedium
A vial contains 2 g of powder. The label says: add 7.4 mL of water for injection to give a total volume of 8 mL. The prescription is 300 mg. What volume V of the reconstituted solution do you give?
2 g+ 7.4 mL → 8 mL300 mg
V = mL
28.Dosage calculationsHard
You must prepare 250 mL of a 2.5% (w/v) solution from a 50% (w/v) stock solution. How much water W must be added to the stock?
C₁ = 50%C₂ = 2.5%V₂ = 250 mL
W = mL
29.IV infusion ratesMedium
Infuse 1000 mL over 10 hours with a giving set of 60 gtt/mL. Find the drip rate R in drops per minute.
1000 mL10 h60 gtt/mL
R = gtt/min
30.IV infusion ratesHard
A drip runs at 25 gtt/min through a set of 20 gtt/mL. There are 200 mL left in the bag. How many hours t until it is empty? Round to one decimal place.
25 gtt/min20 gtt/mL200 mL
t = h
31.Pediatric & critical-care dosingMedium
Practice exercise (made-up values, not clinical guidance). A practice protocol calls for a heparin bolus of 60 units/kg for a patient who weighs 73 kg. The vial contains 1 000 units/mL. What volume V do you draw up? Round to one decimal place.
60 units/kg73 kg1 000 units/mL
V = mL
32.Pediatric & critical-care dosingHard
Practice exercise (made-up values, not clinical guidance). A bag contains dobutamine 500 mg in 250 mL. The order is 10 mcg/kg/min for a patient who weighs 91 kg. At what rate R do you set the pump, in mL/h? Round to one decimal place.
500 mg/250 mL10 mcg/kg/min91 kg
R = mL/h
33.IV fluids & fluid balanceMedium
Practice exercise (made-up values, not clinical guidance). The record shows a patient's intake and output for one 8-hour shift. The patient weighs 89 kg. Find the average urine output U in mL/kg/h. Round to two decimal places.
Practice exercise (made-up values, not clinical guidance). A 500 mL bag runs by pump at 50 mL/h. At 08:30, 250 mL have already been infused. How many hours t until the bag is empty? Round to one decimal place.
500 mL250 mL infused50 mL/h
t = h
35.Clinical assessment scoresMedium
Practice exercise (made-up values, not clinical guidance). Use the NEWS2 chart (SpO₂ scale 1) for these observations: respiration rate 25/min, SpO₂ 96% on supplemental oxygen, blood pressure 90/54 mmHg, pulse 114/min, unresponsive, temperature 36.4 °C. What is the NEWS2 total score?
RR 25SpO₂ 96%O₂SBP 90HR 114UT 36.4 °C
NEWS2 =
36.Clinical assessment scoresHard
Practice exercise (made-up values, not clinical guidance). At 5 minutes after birth, a practice newborn has a pink body with blue hands and feet, a heart rate of 60/min, a grimace when stimulated, limp limbs with no muscle tone and no breathing. Score the APGAR and click how the score is interpreted.
1reassuring
2moderately abnormal
3low
37.Arterial blood gas interpretationMedium
A practice arterial blood gas shows pH 7.43, PaCO₂ 55 mmHg (7.3 kPa) and HCO₃⁻ 35 mmol/L. The primary disorder is metabolic alkalosis. How far is it compensated? Click your answer.
pH 7.43PaCO₂ 55 mmHg (7.3 kPa)HCO₃⁻ 35 mmol/L
1uncompensated
2partially compensated
3fully compensated
38.Arterial blood gas interpretationHard
Practice values: Na⁺ 139, Cl⁻ 88 and HCO₃⁻ 15 mmol/L. Calculate the delta ratio (AG − 12)/(24 − HCO₃⁻), using AG = Na⁺ − (Cl⁻ + HCO₃⁻). Give two decimals.
Na⁺ 139 mmol/LCl⁻ 88 mmol/LHCO₃⁻ 15 mmol/L
delta ratio =
39.ECG rhythm strip interpretationMedium
Interpret this lead II rhythm strip. Which rhythm is it? Click your answer.
lead II, 25 mm/s, 10 mm/mV1 small box = 0.04 s, 1 large box = 0.20 sstrip length 6 s
1sinus bradycardia
2normal sinus rhythm
3first-degree AV block
4sinus tachycardia
40.ECG rhythm strip interpretationHard
This patient has a pacemaker. Interpret the lead II strip. Click your answer.
lead II, 25 mm/s, 10 mm/mV1 small box = 0.04 s, 1 large box = 0.20 sstrip length 6 s
1junctional rhythm
2paced rhythm, failure to capture
3third-degree (complete) AV block
4dual-chamber (AV) paced rhythm
3Solutions
1.Nursing fundamentals
Answer: A · Sugar on the skin can give a falsely high reading
Why this is the answer
Traces of food or drink on the finger can raise the reading. Washing with water and drying fully gives an accurate result; alcohol wipes can also affect some meters.
Answer
A · Sugar on the skin can give a falsely high reading
2.Nursing fundamentals
Answer: B · 8
Why this is the answer
Eyes to pain score 2, incomprehensible sounds score 2 and withdrawal from pain scores 4, giving 8. A GCS of 8 or less suggests the patient may not be able to protect their airway.
Answer
B · 8
3.Infection control & patient safety
Answer: C · Wear gloves, absorb the blood, then clean the area with an approved disinfectant
Why this is the answer
Blood spills are cleaned promptly by staff wearing gloves. The blood is absorbed with disposable material, then the area is cleaned and disinfected with a hospital disinfectant, and waste goes into clinical waste.
Answer
C · Wear gloves, absorb the blood, then clean the area with an approved disinfectant
4.Infection control & patient safety
Answer: B · There is no preventive drug, so baseline and follow-up testing are done to detect infection early
Why this is the answer
There is no vaccine or post-exposure prophylaxis for hepatitis C. The exposure is reported, baseline tests are taken and follow-up testing identifies infection early, because effective treatment is available.
Answer
B · There is no preventive drug, so baseline and follow-up testing are done to detect infection early
5.Prioritization & delegation
Answer: A · “I will take it at breakfast with my calcium tablet.”
Why this is the answer
Levothyroxine is best absorbed on an empty stomach and is separated from calcium and iron by several hours. It is usually lifelong, so it is not stopped when the patient feels better.
Answer
A · “I will take it at breakfast with my calcium tablet.”
6.Prioritization & delegation
Answer: B · A patient two days after surgery with a new heart rate of 112/min and a temperature of 38.4 °C
Why this is the answer
A new fever and tachycardia after surgery can signal infection or another complication, so the nurse should assess and raise the concern before discharge. The other patients are stable and meeting expected goals.
Answer
B · A patient two days after surgery with a new heart rate of 112/min and a temperature of 38.4 °C
7.Clinical nursing
Answer: B · A negative fluid balance of 1,100 mL
Why this is the answer
1,200 − 2,300 = −1,100 mL. A negative balance means more fluid is lost than gained, which may cause dehydration.
Answer
B · A negative fluid balance of 1,100 mL
8.Clinical nursing
Answer: D · Non-invasive ventilation
Why this is the answer
In hypercapnic respiratory failure from COPD that persists despite treatment, non-invasive ventilation (bilevel positive pressure) supports ventilation and lowers PaCO2. Stopping oxygen would cause dangerous hypoxia.
Answer
D · Non-invasive ventilation
9.Lab values & electrolytes
Answer: D · Infarction is not ruled out; troponin is repeated per protocol
Why this is the answer
Troponin may still be normal early after the onset of symptoms. Serial measurements, together with the ECG and the symptoms, are needed to rule infarction in or out. Many protocols repeat high-sensitivity troponin after 1–3 hours.Checked against:Troponin Test · MedlinePlus (NIH) (2023)
Answer
D · Infarction is not ruled out; troponin is repeated per protocol
10.Lab values & electrolytes
Answer: C · Acute adrenal insufficiency (adrenal crisis)
Why this is the answer
Long-term glucocorticoids suppress the body's own cortisol production; stopping them suddenly can cause adrenal crisis. Lack of cortisol causes hypotension, hyponatremia and hypoglycemia. Aldosterone is usually still made, so potassium is often normal; high potassium suggests primary adrenal failure. Treatment is IV hydrocortisone and fluids as prescribed.
Answer
C · Acute adrenal insufficiency (adrenal crisis)
11.Pharmacology
Answer: A · Within 72 hours after the birth
Why this is the answer
Anti-D is given within 72 hours of birth to an Rh-negative mother of an Rh-positive baby. It is also given after events such as miscarriage or abdominal trauma, and often routinely during pregnancy.
Answer
A · Within 72 hours after the birth
12.Pharmacology
Answer: B · "If I feel better after a week, I can stop taking it."
Why this is the answer
Antidepressants are continued for months after improvement to prevent relapse, and are tapered when stopped. Early nausea, delayed benefit and monitoring for suicidal thoughts are correct points.
Answer
B · "If I feel better after a week, I can stop taking it."
13.Med-surg: cardiovascular & respiratory
Answer: D · Reassess heart rate, blood pressure, urine output and lung sounds
Why this is the answer
A fluid challenge is followed by reassessment of perfusion (heart rate, BP, capillary refill, mental state, urine output) and signs of overload such as crackles, raised JVP or worsening breathlessness. The findings are reported to decide on further fluid, vasopressors or escalation.
Answer
D · Reassess heart rate, blood pressure, urine output and lung sounds
14.Med-surg: cardiovascular & respiratory
Answer: B · Too high a pressure damages the trachea; too low allows aspiration
Why this is the answer
Cuff pressure is usually kept at about 20–30 cmH₂O. Higher pressures reduce blood flow to the tracheal mucosa, risking ulceration and stenosis; lower pressures allow secretions to leak past and cause aspiration and VAP. A cuff manometer is used.
Answer
B · Too high a pressure damages the trachea; too low allows aspiration
15.Med-surg: neuro, endocrine & renal
Answer: C · It takes months to work; pregnant women must not handle broken tablets
Why this is the answer
Finasteride, a 5-alpha reductase inhibitor, reduces the conversion of testosterone to dihydrotestosterone and shrinks the prostate over several months. It can harm a male fetus, so pregnant women should avoid handling crushed or broken tablets.
Answer
C · It takes months to work; pregnant women must not handle broken tablets
16.Med-surg: neuro, endocrine & renal
Answer: A · Delayed cerebral ischaemia from vasospasm
Why this is the answer
Vasospasm of cerebral arteries typically occurs several days after a subarachnoid haemorrhage and causes new focal deficits or confusion. It needs urgent medical review. Normal fluid balance is maintained, and nimodipine is continued.
Answer
A · Delayed cerebral ischaemia from vasospasm
17.Med-surg: GI, perioperative & oncology
Answer: C · To reduce insulin resistance and improve recovery
Why this is the answer
Carbohydrate loading the night before and a few hours before surgery reduces thirst, hunger and postoperative insulin resistance. It is not used in every patient, for example some with diabetes.
Answer
C · To reduce insulin resistance and improve recovery
18.Med-surg: GI, perioperative & oncology
Answer: A · Better pain control, sitting up, deep breathing, mobilising and reporting
Why this is the answer
Basal atelectasis is common after upper abdominal surgery when pain limits deep breathing. Good analgesia, upright positioning, deep breathing exercises, incentive spirometry, supported coughing and early mobilisation re-expand the lungs. The findings are reported, because they may progress to pneumonia; oxygen is given to target if needed.
Answer
A · Better pain control, sitting up, deep breathing, mobilising and reporting
19.Maternity & obstetric nursing
Answer: A · Isotretinoin
Why this is the answer
Isotretinoin causes severe birth defects, so pregnancy must be prevented during treatment and for a period afterwards. Paracetamol is the usual analgesic in pregnancy, and levothyroxine should be continued.
Answer
A · Isotretinoin
20.Maternity & obstetric nursing
Answer: B · It suggests clubfoot, treated early with casting
Why this is the answer
A fixed foot that cannot be brought to neutral suggests congenital talipes equinovarus. Gentle casting and bracing (the Ponseti method) usually start in the first weeks. A positional foot that corrects easily is common and benign.
Answer
B · It suggests clubfoot, treated early with casting
21.Pediatric nursing
Answer: D · An oral antifungal medicine
Why this is the answer
Topical creams cannot reach the fungus in the hair shafts and follicles, so tinea capitis needs an oral antifungal for several weeks, sometimes with an antifungal shampoo to reduce spread.
Answer
D · An oral antifungal medicine
22.Pediatric nursing
Answer: A · Explain the procedure with simple diagrams, allow questions and involve the child in choices
Why this is the answer
School-age children benefit from concrete, factual explanations, diagrams and real equipment, and from some control over choices. They may worry about losing control and about the effects on their body.
Answer
A · Explain the procedure with simple diagrams, allow questions and involve the child in choices
23.Mental health nursing
Answer: A · It can seriously harm an unborn baby, so effective contraception and specialist advice are essential
Why this is the answer
Valproate is highly teratogenic, causing neural tube defects and developmental problems. Women who could become pregnant need clear information, effective contraception and specialist review.
Answer
A · It can seriously harm an unborn baby, so effective contraception and specialist advice are essential
24.Mental health nursing
Answer: A · Explain the risks, inform the team, document the discussion and respect their right to leave according to the law and policy
Why this is the answer
Voluntary patients can usually leave, although they may be asked to wait while their risk is assessed. Detaining someone needs legal authority. The nurse informs the team, assesses risk and documents.
Answer
A · Explain the risks, inform the team, document the discussion and respect their right to leave according to the law and policy
25.Nursing math & unit conversions
Answer: 1:15 PM
24-hour clock: from 1 PM onwards add 12 to the hour (3:45 PM = 15:45). Midnight to 12:59 AM is 00:00–00:59, and 12:00–12:59 PM stays 12:00–12:59. Going back, subtract 12 from hours 13–23 and add PM; hours 00 become 12 AM. Count time across midnight in two parts: up to 24:00 (00:00), then from 00:00 on.
Convert the hour
13 − 12 = 1 → PM
Answer
1:15 PM
Answer
1:15 PM
26.Nursing math & unit conversions
Answer: t = 405 min
24-hour clock: from 1 PM onwards add 12 to the hour (3:45 PM = 15:45). Midnight to 12:59 AM is 00:00–00:59, and 12:00–12:59 PM stays 12:00–12:59. Going back, subtract 12 from hours 13–23 and add PM; hours 00 become 12 AM. Count time across midnight in two parts: up to 24:00 (00:00), then from 00:00 on.
Before midnight
19:35 → 24:00 = 265 min
After midnight
00:00 → 02:20 = 140 min
Total
t = 265 + 140 = 405 min
Answer
t = 405 min
27.Dosage calculations
Answer: V = 1.2 mL
Dose calculation: the amount to give equals what is prescribed divided by what you have, times the quantity it comes in: amount = (desired dose/stock strength) × stock volume. Always keep the units the same (convert g to mg, mg to mcg first) and check that the answer is sensible.
Concentration after mixing
2000 mg/8 mL = 250 mg/mL
Volume
V = 300/250 = 1.2 mL
Answer
V = 1.2 mL
28.Dosage calculations
Answer: W = 237.5 mL
Solution strengths: a percentage strength is grams per 100 mL, so 1% = 1 g/100 mL = 10 mg/mL. A ratio strength 1:1000 means 1 g in 1000 mL = 1 mg/mL; 1:10 000 is 0.1 mg/mL. For a dilution the amount of drug stays the same: C₁·V₁ = C₂·V₂.
Volume of stock
V₁ = 2.5·250/50 = 12.5 mL
Water to add
W = 250 − 12.5 = 237.5 mL
Answer
W = 237.5 mL
29.IV infusion rates
Answer: R = 100 gtt/min
Infusion rates: a pump is set in mL/h = volume/time in hours. A gravity drip is counted in drops per minute: gtt/min = volume (mL) × drop factor (gtt/mL)/time (min). The drop factor is printed on the tubing package: macrodrip sets deliver 10, 15 or 20 gtt/mL (blood sets often 10 gtt/mL in the US, 15 in the UK) and microdrip sets 60 gtt/mL. Always use the drop factor the question or package gives.
Time in minutes
10·60 = 600 min
Drip rate
R = 1000·60/600 = 100 gtt/min
Answer
R = 100 gtt/min
30.IV infusion rates
Answer: t = 2.7 h
Infusion rates: a pump is set in mL/h = volume/time in hours. A gravity drip is counted in drops per minute: gtt/min = volume (mL) × drop factor (gtt/mL)/time (min). The drop factor is printed on the tubing package: macrodrip sets deliver 10, 15 or 20 gtt/mL (blood sets often 10 gtt/mL in the US, 15 in the UK) and microdrip sets 60 gtt/mL. Always use the drop factor the question or package gives.
Rate in mL/h
25·60/20 = 75 mL/h
Time left
t = 200/75 = 2.667 ≈ 2.7 h
Answer
t = 2.7 h
31.Pediatric & critical-care dosing
Answer: V = 4.4 mL
Heparin and insulin infusions: concentration = units in the bag/bag volume (units/mL). Pump rate (mL/h) = units per hour/concentration, and units per hour = mL/h × concentration. For a weight-based order, units/h = units/kg/h × weight first. A bolus volume = units needed/vial strength. The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
Units needed
60·73 = 4 380 units
Volume
V = 4380/1000 = 4.38 ≈ 4.4 mL
Answer
V = 4.4 mL
32.Pediatric & critical-care dosing
Answer: R = 27.3 mL/h
Titrated drips: first find the concentration in mcg/mL (mg × 1000/mL). For a weight-based order, mcg/min = mcg/kg/min × weight. Then mL/h = mcg/min × 60/concentration. Working backwards, mcg/kg/min = mL/h × concentration/(60 × weight). The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
Concentration
500 mg = 500 000 mcg
500 000/250 = 2000 mcg/mL
Dose per minute and per hour
10·91 = 910 mcg/min
910·60 = 54600 mcg/h
Pump rate
R = 54600/2000 = 27.3 mL/h
Answer
R = 27.3 mL/h
33.IV fluids & fluid balance
Answer: U = 2.35 mL/kg/h
Intake and output: intake counts everything that goes in (oral fluids, IV infusions, IV medications and flushes, tube feeds); ice chips count as half their volume. Output counts urine, drains, vomit and other losses. Balance = total intake − total output; a negative balance is a net loss. The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
Total urine
375 + 350 + 450 + 500 = 1675 mL
Per kilogram per hour
U = 1675/(89·8) = 2.353 ≈ 2.35 mL/kg/h
Answer
U = 2.35 mL/kg/h
34.IV fluids & fluid balance
Answer: t = 5 h
Infusion time: time (h) = volume to infuse (mL)/rate (mL/h); use the volume still left in the bag, not the bag size. Volume infused = rate × time. Convert decimal hours to hours and minutes with the fraction × 60 (0.5 h = 30 min, not 50 min). The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
Volume left
500 − 250 = 250 mL
Time
t = 250/50 = 5 h
Answer
t = 5 h
That is about 5 h 00 min, so the bag runs out at about 13:30.
35.Clinical assessment scores
Answer: NEWS2 = 13
NEWS2 (National Early Warning Score 2, Royal College of Physicians 2017): score each of the seven parameters with the chart (respiration rate, SpO₂ on scale 1, air or supplemental oxygen, systolic blood pressure, pulse, consciousness on the ACVPU scale and temperature) and add the scores. Clinical risk: 0–4 low; a score of 3 in any single parameter low–medium; 5–6 medium; 7 or more high. A total of 5 or more needs an urgent response.
Score each parameter
RR 25/min → 3
SpO₂ 96% → 0
on oxygen → 2
SBP 90 mmHg → 3
HR 114/min → 2
unresponsive (U) → 3
T 36.4 °C → 0
Add
NEWS2 = 3 + 0 + 2 + 3 + 2 + 3 + 0 = 13
Answer
NEWS2 = 13
36.Clinical assessment scores
Answer: low
APGAR score: five signs, each scored 0, 1 or 2, checked at 1 and 5 minutes after birth. Appearance (colour): blue or pale 0, pink body with blue extremities 1, pink all over 2. Pulse: absent 0, below 100/min 1, 100/min or more 2. Grimace (reflex irritability): none 0, grimace 1, cry, cough or sneeze 2. Activity (tone): limp 0, some flexion 1, active movement 2. Respiration: absent 0, slow or irregular with a weak cry 1, good with a strong cry 2. A total of 7–10 is reassuring, 4–6 moderately abnormal and 0–3 low.
Score each sign
Appearance: a pink body with blue hands and feet → 1
Pulse: 60/min → 1
Grimace: a grimace when stimulated → 1
Activity: limp limbs with no muscle tone → 0
Respiration: no breathing → 0
Add
APGAR = 1 + 1 + 1 + 0 + 0 = 3
Interpretation
3 → low
Answer
low
Below 7 at 5 minutes, the score is usually repeated every 5 minutes up to 20 minutes.
37.Arterial blood gas interpretation
Answer: fully compensated
Reading a blood gas (ROME): first the pH: below 7.35 is acidaemia, above 7.45 alkalaemia. Then find the value that explains it. PaCO₂ (normal 35–45 mmHg, 4.7–6.0 kPa) is the respiratory part and moves Opposite to the pH in a respiratory disorder; HCO₃⁻ (normal 22–26 mmol/L) is the metabolic part and moves in the same direction as the pH (Respiratory Opposite, Metabolic Equal). The other value shows the compensation: normal means uncompensated; abnormal in the direction that pulls the pH back while the pH is still abnormal means partially compensated; a normal pH with both values abnormal means fully compensated. Ranges differ slightly between laboratories; these are practice values.
ROME, value by value
pH 7.43: within 7.35–7.45
PaCO₂ 55 mmHg: high (35–45)
HCO₃⁻ 35 mmol/L: high (22–26)
Compensation
Clinically, also check the expected compensation: for a metabolic alkalosis PaCO₂ ≈ 0.7·HCO₃⁻ + 21 = 43.5–47.5 mmHg, so the measured 55 mmHg points to an additional respiratory acidosis (a mixed disorder). The answer above is the ROME exam classification.
fully compensated
Answer
fully compensated
38.Arterial blood gas interpretation
Answer: delta ratio = 2.667
Expected compensation: in metabolic acidosis Winter’s formula predicts PaCO₂ = 1.5·HCO₃⁻ + 8 ± 2 mmHg; a measured value above that range points to an additional respiratory acidosis, below it to an additional respiratory alkalosis. The anion gap AG = Na⁺ − (Cl⁻ + HCO₃⁻), normally about 8–12 mmol/L, separates high-gap from normal-gap metabolic acidosis; low albumin hides a high gap (add 2.5 per g/dL that albumin is below 4.0). The delta ratio (AG − 12)/(24 − HCO₃⁻) between about 0.8 and 2 fits a pure high-gap acidosis (some texts use 1 instead of 0.8), below that an added normal-gap acidosis, and above 2 an added metabolic alkalosis.
Anion gap
AG = 139 − (88 + 15) = 36
Delta ratio
(36 − 12)/(24 − 15) = 24/9 = 2.667
Answer
delta ratio = 2.667
Above 2: an added metabolic alkalosis.
39.ECG rhythm strip interpretation
Answer: normal sinus rhythm
Rhythm criteria (lead II): sinus rhythm has an upright P wave before every QRS, a constant PR of 0.12–0.20 s and a narrow QRS: normal sinus rhythm at 60–100/min, sinus bradycardia below 60, sinus tachycardia above 100. Atrial fibrillation: no P waves, a fibrillatory baseline and an irregularly irregular R–R. Atrial flutter: sawtooth flutter waves at about 250–350/min with a fixed conduction ratio such as 2:1 or 4:1. First-degree AV block: sinus rhythm with a constant PR above 0.20 s. Junctional rhythm: narrow QRS at 40–60/min with absent or inverted P waves (PR below 0.12 s, or P after the QRS). A PVC is an early, wide (0.12 s or more), bizarre QRS without a P wave, with the T wave in the opposite direction and usually a full compensatory pause; in bigeminy every second beat is a PVC.
Five steps
1. Rate: R–R = 19 small boxes, 1500 ÷ 19 ≈ 79 per minute.
2. Rhythm: regular, every R–R is 0.76 s.
3. P waves: upright, one before every QRS, all alike.
4. PR interval: 0.16 s, constant, within 0.12–0.20 s.
5. QRS: 0.06 s, narrow (below 0.12 s).
Interpretation
normal sinus rhythm
Answer
normal sinus rhythm
40.ECG rhythm strip interpretation
Answer: dual-chamber (AV) paced rhythm
Paced rhythms: a pacemaker impulse shows as a narrow vertical pacing spike. After a ventricular spike the QRS is wide (0.12 s or more), because the impulse spreads from the lead through the muscle instead of the conduction system; with right-ventricular pacing it is often mostly negative in lead II. A spike before each P wave means atrial pacing, and a dual-chamber (AV) pacemaker shows an atrial spike and a P wave, then, after the programmed AV delay, a ventricular spike and a wide QRS. Capture means every spike is followed by a depolarisation. Failure to capture is a spike without a P wave or QRS after it; failure to sense (spikes that ignore the patient’s own beats) and failure to pace (no spike when one is due) are the other classic malfunctions.
Five steps
1. Rate: R–R = 23 small boxes, 1500 ÷ 23 ≈ 65 per minute.
2. Rhythm: regular, every R–R is 0.92 s.
3. P waves: each P wave follows its own pacing spike (atrial pacing).
4. AV interval: the second spike comes 0.16 s after the first one (the programmed AV delay).
5. QRS: 0.16 s, wide, right after the second spike (ventricular pacing).
Interpretation
dual-chamber (AV) paced rhythm
Answer
dual-chamber (AV) paced rhythm
The paced QRS is wide by nature; do not call it a bundle branch block or a ventricular rhythm.
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