10 Random Questions

Transfusions & Fluids   Pediatric  

An 8-kg, 1-year-old child has a measured blood loss of 50 ml during the first two hours of a rectal pull-through operation. Preoperative hematocrit was 31%. Balanced saline solution 150 ml has been administered for replacement. Urine output has been 2 ml for the last hour, heart rate is 160 bpm, and blood pressure is 40/15 mmHg. The most appropriate fluid therapy is,


Reveal answer


Which of the following is the most likely cause of postural headache following spinal anesthesia?


Reveal answer


Transfusions & Fluids  

Which of the following is the most frequent cause of hemorrhagic diathesis after administration of 20 units of CPD-stored blood over six hours?


Reveal answer


General  

A 78-year-old man who is scheduled for an inguinal hernia repair has a preoperative ECG showing left bundle branch block. He has had no symptoms of cardiovascular disease. This ECG finding most likely indicates


Reveal answer


A rapid shallow ventilatory pattern is most energy efficient for a patient who


Reveal answer


Equipment & Physics   Pharmacology & Pharmacokinetics  

Desflurane is delivered using a vaporizer that contains internal heaters because


Reveal answer


Transfusions & Fluids  

Which of the following statements concerning banked blood is true?


Reveal answer


In the PACU after resection of an occipital astrocytoma, a patient has a urine output greater than 300 ml/hr, serum osmolality of 310 mOsm/L, and a hematocrit of 40% (equal to the preoperative value). Intraoperative blood loss was estimated to be 750 ml; furosemide and mannitol were administered during the procedure. The most appropriate next step is


Reveal answer


Neuro  

A 70-kg, 46-year-old man is undergoing clipping of a cerebral aneurysm with nitrous oxide, opioid, relaxant anesthesia. He is otherwise healthy. As the surgeons are about to enter the dura, the brain is noted to be tense and bulging. Heart rate is 100 bpm and mean arterial pressure is 90 mmHg. PaO2 is 120 mmHg, PaCO2 is 23 mmHg, and pH is 7.50. Which of the following should be done immediately?


Reveal answer


Pharmacology & Pharmacokinetics  

Which of the following statements concerning the volume of distribution of a drug is true?


Reveal answer