NCLEX 形式の優先順位の決定と委任:直前対策パック

公式集、全トピックの解法の要点、14 問の演習問題。完全な解答は巻末にあります。

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1公式と解法

優先順位の決定と委任

解き方

  1. 何もしなければ、最も早く患者に害が及ぶのは何かを考えます。
  2. ABC(心停止では C-A-B)を適用し、次にマズローの欲求を考えます:生理的欲求は安全の欲求より先、安全の欲求は心理的欲求より先です。
  3. 選択肢を比較します:急性は慢性より先、不安定は安定より先、予期しないものは予期されるものより先、全身は局所より先。そして各所見を患者のベースラインと照らします。
  4. 緊急でない限り、行動する前にアセスメントします。緊急の場合は、他の対応の前提となる手順を選びます。
  5. 委任では、5つの権利(業務、状況、人、指示、監督)を確認します。アセスメント、指導、評価は看護師(RN)が行います。

感染管理と患者の安全

解き方

  1. すべての患者に標準予防策から始めます:手指衛生、予想される曝露に応じた個人防護具(PPE)、安全な鋭利器材の扱い。
  2. 経路に応じて予防策を追加します:接触(ガウン、手袋)、飛沫(サージカルマスク)、空気(N95、陰圧室)。
  3. 滅菌物は滅菌のまま保ちます:疑わしければ滅菌ではありません。拭かずに交換します。
  4. 環境内の害を防ぎます:転倒対策、身体拘束は最後の手段、火災には RACE と PASS。
  5. 与薬の権利、2つの識別子、ハイリスク薬の追加の安全対策を確認し、エラーやヒヤリハットを報告します。

検査値と電解質

解き方

  1. 値を検査室独自の基準範囲と比べ、次に患者のベースラインと推移と比べます。
  2. 検体を確認します:溶血、遅れ、点滴の近くでの採血は、誤った結果の原因になります。
  3. 値を、典型的な徴候と、その原因となる薬剤や状態に結びつけます。
  4. 相互作用を探します:低カリウム血症や低マグネシウム血症はジゴキシン中毒を増強し、脱水はリチウムを上昇させます。
  5. 患者に対応します:アセスメントし、血中濃度が危険なら薬を保留し、パニック値は復唱して処方者に報告します。

内科外科看護:循環器と呼吸器

解き方

  1. 問題を言い当てます:ポンプ失調、動脈の閉塞、リズム、血栓、気道の狭窄、感染、または機器の問題。
  2. まず危険なサインを確認します:低酸素、低血圧、胸痛、新たな錯乱、冷たく脈の触れない手足。
  3. 酸素は患者に合わせます:大多数は94~98%、CO₂ 貯留のリスクがある人は88~92%。
  4. 各薬剤を、その検査とリスクに結びつけます:ワルファリンと INR、ヘパリンと aPTT・血小板、利尿薬とカリウム。
  5. 安全な最初の対応を選び、その後にエスカレーションして再評価します。

内科外科看護:神経、内分泌、腎臓

解き方

  1. 新たな錯乱、脱力、けいれんのあるすべての患者で血糖を確認します。
  2. 意識レベルを脳の異常の最も早い警告サインとして使います。瞳孔やクッシング三徴は遅れて現れます。
  3. 糖尿病の緊急事態では、DKA(ケトン、アシドーシス)と HHS(非常に高い浸透圧、脱水)を区別し、まず輸液を行います。
  4. ナトリウムと水分については、ADH が過剰(SIADH)か不足(DI)かを判断し、慢性の変化はゆっくり補正します。
  5. 腎臓の問題では、原因を腎前性、腎性、腎後性に分け、カリウムと水分に注意します。

内科外科看護:消化器、周術期、がん

解き方

  1. 何が隠れているかを考えます:体内出血、発熱のない感染、正常な SpO₂ の陰にある換気低下。
  2. 術後の時間経過で合併症を絞り込みます:数時間なら出血、数日なら胸部の問題、それ以降は創傷や縫合不全の問題。
  3. 疼痛は、アセスメントし、多角的鎮痛で治療し、再評価します。オピオイドを使うたびに鎮静をモニターします。
  4. がん患者では、最低値(ナディア)の時期の体調不良はすべて好中球減少性敗血症として扱い、腫瘍学的な緊急事態を把握しておきます。
  5. 熱傷では、II度とIII度の部分だけを数え、パークランドの時計は受傷時から始め、尿量に合わせて調整します。

2演習問題

1.優先順位の決定と委任ふつう

A parent of a child with influenza talks with the nurse. Which statement shows a need for further teaching?

  1. A“I will give my child plenty of fluids.”
  2. B“I will give my child aspirin to bring the fever down.”
  3. C“I will keep my child home from school and away from others while unwell.”
  4. D“I will call if my child has trouble breathing.”
2.優先順位の決定と委任むずかしい

An RN sees an LPN/LVN crushing an extended-release metoprolol tablet to mix with applesauce. What should the RN do?

  1. AStop the LPN/LVN and contact the prescriber or pharmacist about another form
  2. BLet the LPN/LVN continue, since crushing makes the tablet easier to swallow
  3. CTell the LPN/LVN to give half of the crushed tablet now and the other half at lunchtime
  4. DReport the LPN/LVN at the end of the month without saying anything now
3.感染管理と患者の安全ふつう

When should blood specimen tubes be labeled?

  1. ABy the laboratory staff after the tubes arrive
  2. BAt the bedside, in front of the patient, right after collection
  3. CBack at the station after all the samples are collected
  4. DAt the nurses’ station before going to the patient, to save time
4.感染管理と患者の安全むずかしい

During a disaster, the hospital needs to free beds quickly. Which patient is the best candidate for early discharge?

  1. AA patient on an IV heparin infusion that is still being adjusted
  2. BA patient on a ventilator in the intensive care unit who is slowly improving
  3. CA patient admitted overnight for observation who is now stable with normal tests
  4. DA patient with ongoing chest pain awaiting cardiac tests
5.検査値と電解質ふつう

A patient's potassium is 7.0 mEq/L. Which ECG change would the nurse expect?

  1. ATall, peaked T waves
  2. BDelta waves before the QRS
  3. CProminent U waves
  4. DFlattened T waves
6.検査値と電解質むずかしい

An 82-year-old woman without a catheter has a urine culture growing bacteria, but no fever, urinary symptoms or change in mental state. What is the best interpretation?

  1. AContamination, so the culture must be repeated every week
  2. BA urinary tract infection that needs urgent IV antibiotics
  3. CPyelonephritis, which needs admission and IV fluids today
  4. DAsymptomatic bacteriuria, usually not treated with antibiotics
7.臨床看護学ふつう

Which blood results are typical of Addison's disease (primary adrenal insufficiency)?

  1. ALow sodium and high potassium
  2. BHigh sodium and low potassium
  3. CHigh glucose and high calcium
  4. DLow haemoglobin and high platelets
8.臨床看護学むずかしい

Why is morphine more likely to cause toxicity in a patient with severe kidney impairment?

  1. AKidney disease makes the opioid receptors disappear
  2. BKidney failure makes the stomach absorb more morphine
  3. CIts active metabolites build up because the kidneys excrete them
  4. DThe kidneys normally activate morphine, so more of it becomes active
9.内科外科看護:循環器と呼吸器ふつう

Which feature of a COPD exacerbation most suggests that antibiotics are needed?

  1. AA clear runny nose
  2. BA dry, tickly cough with no sputum at all for a day
  3. CAn increase in purulent (green or yellow) sputum
  4. DA mild sore throat that lasted for one day only
10.内科外科看護:循環器と呼吸器むずかしい

1日1.5 Lの水分制限を受けている心不全の患者が、強い口渇を訴えています。最も適切な対応はどれですか?

  1. A口腔ケア、数を数えた氷片、1日を通して分けた水分
  2. B翌朝の体重測定まで、一切の水分を与えない
  3. C唾液を促して乾燥を和らげるための、塩気のある軽食
  4. D渇きは常に満たすべきなので、水を無制限に
11.内科外科看護:神経、内分泌、腎臓ふつう

Which measure best prevents catheter-associated urinary tract infection?

  1. ADisconnect the bag regularly to empty it
  2. BChange the catheter for a new one every day
  3. CKeep the drainage bag above bladder level
  4. DRemove the catheter as soon as it is no longer needed
12.内科外科看護:神経、内分泌、腎臓むずかしい

Which patient with a spinal cord injury is at risk of autonomic dysreflexia?

  1. AA patient with an injury at L3
  2. BA patient with an injury at S2
  3. CA patient with an injury at T4
  4. DA patient with an injury at L5
13.内科外科看護:消化器、周術期、がんふつう

Which finding means a patient is usually ready to leave recovery for the ward?

  1. AStill drowsy and needing a jaw thrust to breathe
  2. BPain score 9/10 and vomiting repeatedly
  3. CSystolic BP falling steadily over the last hour, with a rising pulse rate
  4. DAwake, with a clear airway, stable observations and controlled pain
14.内科外科看護:消化器、周術期、がんむずかしい

A patient on immunotherapy for melanoma has six watery stools a day and abdominal cramps. What should the nurse do?

  1. AReassure that diarrhoea is normal and harmless
  2. BAdvise eating more fibre and fruit to firm up the stools
  3. CGive loperamide and review next week
  4. DEscalate urgently, as immune-related colitis is likely

3溶液

1.優先順位の決定と委任

答え: B · “I will give my child aspirin to bring the fever down.”

これが答えになる理由

Aspirin in children with viral illnesses such as influenza or chickenpox is linked to Reye syndrome. Fluids, rest at home and reporting breathing trouble are correct.

答え

B · “I will give my child aspirin to bring the fever down.”
2.優先順位の決定と委任

答え: A · Stop the LPN/LVN and contact the prescriber or pharmacist about another form

これが答えになる理由

Crushing an extended-release tablet releases the whole dose at once and can cause toxicity, such as severe bradycardia or hypotension. The RN steps in now and arranges a suitable form.

答え

A · Stop the LPN/LVN and contact the prescriber or pharmacist about another form
3.感染管理と患者の安全

答え: B · At the bedside, in front of the patient, right after collection

これが答えになる理由

Labeling tubes at the bedside, using two patient identifiers and in the patient’s presence, prevents wrong-patient specimens. Pre-labeled or later-labeled tubes are easily mixed up.

答え

B · At the bedside, in front of the patient, right after collection
4.感染管理と患者の安全

答え: C · A patient admitted overnight for observation who is now stable with normal tests

これが答えになる理由

In a surge, stable patients who could be safely cared for at home are discharged first. Patients who are unstable or need close monitoring or titrated infusions must stay.

答え

C · A patient admitted overnight for observation who is now stable with normal tests
5.検査値と電解質

答え: A · Tall, peaked T waves

これが答えになる理由

Hyperkalemia first causes tall, peaked T waves, then a prolonged PR interval, loss of P waves and a wide QRS, which can lead to ventricular fibrillation or asystole. U waves and flat T waves are signs of hypokalemia.確認に用いた資料: High potassium level · MedlinePlus (NIH) (2025); Potassium test · MedlinePlus (NIH) (2025)

答え

A · Tall, peaked T waves
6.検査値と電解質

答え: D · Asymptomatic bacteriuria, usually not treated with antibiotics

これが答えになる理由

Asymptomatic bacteriuria is common in older adults and usually should not be treated, because treatment brings adverse effects and resistance without benefit. Exceptions include pregnancy and some urological procedures.確認に用いた資料: Asymptomatic Bacteriuria · StatPearls (NCBI Bookshelf) (2023)

答え

D · Asymptomatic bacteriuria, usually not treated with antibiotics
7.臨床看護学

答え: A · Low sodium and high potassium

これが答えになる理由

Without aldosterone, the kidneys lose sodium and retain potassium. Patients may also have low blood pressure, low glucose and increased skin pigmentation.

答え

A · Low sodium and high potassium
8.臨床看護学

答え: C · Its active metabolites build up because the kidneys excrete them

これが答えになる理由

Morphine metabolites, including morphine-6-glucuronide, are cleared by the kidneys and accumulate in renal impairment, causing sedation and respiratory depression. Alternative opioids or lower doses are often chosen.

答え

C · Its active metabolites build up because the kidneys excrete them
9.内科外科看護:循環器と呼吸器

答え: C · An increase in purulent (green or yellow) sputum

これが答えになる理由

Antibiotics are usually considered when sputum becomes more purulent, especially with more breathlessness or sputum volume, or signs of pneumonia. Many exacerbations are viral. Oral corticosteroids and increased bronchodilators are also used.

答え

C · An increase in purulent (green or yellow) sputum
10.内科外科看護:循環器と呼吸器

答え: A · 口腔ケア、数を数えた氷片、1日を通して分けた水分

これが答えになる理由

水分を1日を通して分け、小さなカップを使い、氷片をなめ(合計に数える)、シュガーレスのガムを噛み、定期的に口腔ケアを行うことは、患者が水分制限に耐えるのに役立ちます。塩気のある食品は、口渇と水分貯留を増やします。

答え

A · 口腔ケア、数を数えた氷片、1日を通して分けた水分
11.内科外科看護:神経、内分泌、腎臓

答え: D · Remove the catheter as soon as it is no longer needed

これが答えになる理由

The risk of CAUTI rises with each day a catheter is in place. Avoiding unnecessary catheters and removing them early are the most effective measures. A closed system and keeping the bag below bladder level also help.

答え

D · Remove the catheter as soon as it is no longer needed
12.内科外科看護:神経、内分泌、腎臓

答え: C · A patient with an injury at T4

これが答えになる理由

Autonomic dysreflexia usually occurs with injuries at T6 or above. Below this level, the body can still control the sympathetic response to stimuli such as a full bladder. Lumbar and sacral injuries do not usually cause it.

答え

C · A patient with an injury at T4
13.内科外科看護:消化器、周術期、がん

答え: D · Awake, with a clear airway, stable observations and controlled pain

これが答えになる理由

Discharge criteria include a protected airway, adequate breathing and oxygen saturation, stable vital signs, acceptable pain and nausea control, and no active bleeding, as set by local recovery criteria.

答え

D · Awake, with a clear airway, stable observations and controlled pain
14.内科外科看護:消化器、周術期、がん

答え: D · Escalate urgently, as immune-related colitis is likely

これが答えになる理由

Severe diarrhoea on checkpoint inhibitors suggests immune-mediated colitis, which can perforate. It needs urgent assessment, infection testing and often high-dose steroids, not only antidiarrhoeals.

答え

D · Escalate urgently, as immune-related colitis is likely

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