Робочий аркуш «Лабораторні показники та електроліти» з відповідями

Which sample is commonly used to screen a patient for MRSA carriage on admission?

1. AA sample of stool sent for culture
2. BA swab from the front of the nose
3. CA blood culture from one arm
4. DA clean-catch midstream urine sample

What does a raised erythrocyte sedimentation rate (ESR) show?

1. AInflammation somewhere in the body, without showing where
2. BA specific infection of the urinary tract by bacteria
3. CA low level of iron stored in the bone marrow
4. DDamage to heart muscle within the past few hours

What is the usual target INR for a patient taking warfarin for a deep vein thrombosis?

1. A1,0–1,5
2. B4,0–5,0
3. C0,8–1,2
4. D2,0–3,0

Чому низький загальний кальцій слід інтерпретувати обережно в пацієнта з низьким альбуміном у сироватці?

1. AАльбумін і кальцій вимірюють однією хімічною реакцією, тому вони завжди падають разом
2. BБагато кальцію зв'язано з альбуміном, тому загальний кальцій падає, навіть якщо іонізований кальцій нормальний
3. CНизький альбумін робить кожен тест на кальцій неточним і марним
4. DНизький альбумін завжди спричиняє справжню симптомну гіпокальціємію

Why must a blue-top (citrate) coagulation tube be filled to the correct level?

1. AThe blood-to-anticoagulant ratio must be right for accurate clotting times
2. BThe laboratory charges extra when a tube is not filled correctly
3. CUnderfilled tubes always give a falsely low hemoglobin and hematocrit
4. DAn overfull tube is needed to measure the potassium level

A patient with recurrent gout starts allopurinol. Which laboratory result shows that the treatment is achieving its goal?

1. AA falling serum potassium
2. BA falling serum uric acid
3. CA rising white cell count
4. DA rising serum calcium

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. CAsymptomatic bacteriuria, usually not treated with antibiotics
4. DPyelonephritis, which needs admission and IV fluids today

A young adult has fatigue, bruising and fever. The white cell count is 85 × 10³/µL with many blasts, the hemoglobin is 7,9 g/dL (79 g/L) and the platelets are 22 × 10³/µL. What is the most likely diagnosis?

1. AAcute viral infection
2. BAcute leukemia
3. CPolycythemia vera
4. DIron-deficiency anemia