National Health Regulatory Authority Licensure Examination (NHRA Bahrain) · Clinical Medicine And Surgery

Clinical calculations

41 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 41 questions

  1. A patient weighs 81 kg and is 1.7 m tall. What is the body mass index?
  2. Serum values: sodium 142, chloride 102, bicarbonate 12 mmol/L. What is the anion gap?
  3. Using the Parkland formula, how much fluid should be given in the first 8 hours to a 70 kg adult with 30% total body surface area burns? (4 mL x kg x %TBSA in 24 h, half in the first 8 h)
  4. An ECG shows a QT interval of 450 ms and an RR interval of 0.81 s. What is the corrected QT by Bazett's formula?
  5. 720 mL of saline must run over 6 hours using tubing with a drop factor of 10 drops/mL. What is the drip rate in drops per minute?
  6. A patient weighs 64 kg and is 1.75 m tall. What is the body mass index?
  7. Serum values: sodium 136, chloride 98, bicarbonate 20 mmol/L. What is the anion gap?
  8. A patient has a total serum calcium of 8.4 mg/dL and an albumin of 3.5 g/dL. What is the albumin-corrected calcium?
  9. An ECG shows a QT interval of 360 ms and an RR interval of 0.64 s. What is the corrected QT by Bazett's formula?
  10. 600 mL of saline must run over 4 hours using tubing with a drop factor of 20 drops/mL. What is the drip rate in drops per minute?
  11. A patient weighs 50 kg and is 1.75 m tall. What is the body mass index?
  12. Serum values: sodium 140, chloride 100, bicarbonate 10 mmol/L. What is the anion gap?
  13. A patient has a total serum calcium of 8 mg/dL and an albumin of 2.5 g/dL. What is the albumin-corrected calcium?
  14. Using the Parkland formula, how much fluid should be given in the first 8 hours to a 50 kg adult with 30% total body surface area burns? (4 mL x kg x %TBSA in 24 h, half in the first 8 h)
  15. 1200 mL of saline must run over 8 hours using tubing with a drop factor of 20 drops/mL. What is the drip rate in drops per minute?
  16. An infusion is ordered at 2 micrograms/kg/min for a 80 kg patient. The bag contains 800 micrograms/mL. What pump rate in mL/h is needed?
  17. A patient weighs 81 kg and is 1.8 m tall. What is the body mass index?
  18. A patient's blood pressure is 90/60 mmHg. What is the mean arterial pressure?
  19. Serum values: sodium 140, chloride 104, bicarbonate 24 mmol/L. What is the anion gap?
  20. A patient has a total serum calcium of 7.6 mg/dL and an albumin of 3 g/dL. What is the albumin-corrected calcium?
  21. Using the Parkland formula, how much fluid should be given in the first 8 hours to a 60 kg adult with 20% total body surface area burns? (4 mL x kg x %TBSA in 24 h, half in the first 8 h)
  22. 360 mL of saline must run over 3 hours using tubing with a drop factor of 10 drops/mL. What is the drip rate in drops per minute?
  23. A patient weighs 64 kg and is 1.8 m tall. What is the body mass index?
  24. A patient has a total serum calcium of 7.2 mg/dL and an albumin of 3.5 g/dL. What is the albumin-corrected calcium?
  25. Using the Parkland formula, how much fluid should be given in the first 8 hours to a 70 kg adult with 40% total body surface area burns? (4 mL x kg x %TBSA in 24 h, half in the first 8 h)
  26. 900 mL of saline must run over 6 hours using tubing with a drop factor of 20 drops/mL. What is the drip rate in drops per minute?
  27. A patient weighs 54 kg and is 1.75 m tall. What is the body mass index?
  28. An ECG shows a QT interval of 384 ms and an RR interval of 0.64 s. What is the corrected QT by Bazett's formula?
  29. 1440 mL of saline must run over 8 hours using tubing with a drop factor of 10 drops/mL. What is the drip rate in drops per minute?
  30. A patient weighs 72 kg and is 1.75 m tall. What is the body mass index?
  31. A patient's blood pressure is 140/80 mmHg. What is the mean arterial pressure?
  32. Using the Parkland formula, how much fluid should be given in the first 8 hours to a 50 kg adult with 50% total body surface area burns? (4 mL x kg x %TBSA in 24 h, half in the first 8 h)
  33. An ECG shows a QT interval of 405 ms and an RR interval of 0.81 s. What is the corrected QT by Bazett's formula?
  34. An infusion is ordered at 10 micrograms/kg/min for a 80 kg patient. The bag contains 3200 micrograms/mL. What pump rate in mL/h is needed?
  35. A patient weighs 64 kg and is 1.7 m tall. What is the body mass index?
  36. A patient's blood pressure is 120/90 mmHg. What is the mean arterial pressure?
  37. Using the Parkland formula, how much fluid should be given in the first 8 hours to a 90 kg adult with 50% total body surface area burns? (4 mL x kg x %TBSA in 24 h, half in the first 8 h)
  38. An ECG shows a QT interval of 432 ms and an RR interval of 0.81 s. What is the corrected QT by Bazett's formula?
  39. 1080 mL of saline must run over 6 hours using tubing with a drop factor of 20 drops/mL. What is the drip rate in drops per minute?
  40. A patient weighs 90 kg and is 1.7 m tall. What is the body mass index?
  41. A patient's blood pressure is 120/60 mmHg. What is the mean arterial pressure?

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