10 Random Questions
An 18-year-old woman has knee pain during arthroscopy performed with femoral and sciatic nerve blocks for repair of a torn medial meniscus. The most appropriate management is addition of which of the following nerve blocks?
- (A) Deep peroneal
- (B) Obturator
- (C) Popliteal
- (D) Saphenous
- (E) Superficial peroneal
A multi-orifices right heart catheter is being positioned by EKG control prior to sitting craniotomy. The EKG tracing is obtained between the distal tip of the catheter and the right arm lead. The most appropriate next step is to
- (A) leave the catheter in place
- (B) advance the catheter 2 to 3 cm
- (C) withdraw the catheter 2 to 3 cm
- (D) remove the catheter completely
- (E) change polarity of the EKG
Preoperative evaluation of a patient who has marked malnutrition will demonstrate each of the following EXCEPT
- (A) decreased respiratory muscle function
- (B) decreased serum albumin concentration
- (C) decreased metabolic rate
- (D) suppressed immune function
- (E) decreased extracellular fluid volume
A 2.2-kg, 6-hour-old neonate is to undergo gastrostomy followed by repair of a tracheoesophageal fistula. During induction with halothane, air, and oxygen, the abdomen becomes distended. Appropriate management is to
- (A) intubate and assist spontaneous ventilation
- (B) intubate and control ventilation
- (C) insert an orogastric tube
- (D) allow the patient to breathe spontaneously by mask until gastrostomy
- (E) control ventilation by mask until gastrostomy
A 22-year-old woman with preeclampsia has undergone emergency cesarean delivery during general anesthesia. At the completion of the surgery, attempts at reversal of vecuronium are unsuccessful. Each of the following could be a cause of this failure EXCEPT
- (A) hypoalbuminemia
- (B) hypothermia
- (C) perioperative administration of gentamicin
- (D) perioperative administration of magnesium sulfate
- (E) respiratory acidosis
During protamine administration following separation from cardiopulmonary bypass, blood pressure decreases from 100/70 to 60/30 mmHg and peak inspiratory pressure increases from 26 to 60 cm H2O. The most appropriate next step in management is administration of
- (A) diphenhydramine
- (B) dopamine
- (C) epinephrine
- (D) methylprednisolone
- (E) terbutaline
The fetal heart rate and uterine contraction tracings shown are most consistent with
- (A) fetal acidosis
- (B) fetal cerebral hemorrhage
- (C) fetal head compression
- (D) fetal hypoxia
- (E) uteroplacental insufficiency
A 70-kg 61-year-old patient undergoes a four-hour resection of an abdominal aortic aneurysm during anesthesia with fentanyl and enflurane. Infrarenal clamping is required during the procedure. Twelve hours after the procedure, urine output is 15 ml/hr with a fractional sodium excretion of 6%. Which of the following is the most likely cause?
- (A) Enflurane nephrotoxicity
- (B) Hypovolemia
- (C) Intraoperative renal ischemia
- (D) Positive pressure ventilation
- (E) Unilateral ureteral obstruction
In a patient with hypovolemic shock, which of the following factors is the best measure of the overall balance between oxygen supply and demand?
- (A) Arterial oxygen content
- (B) PetO2
- (C) Mixed venous oxygen saturation
- (D) PaO2
- (E) Transcutaneous oxygen tension
During ligation of a patent ductus arteriosus, a newborn infant receives a total gas flow of 5 L/min through a nonheated Jackson-Rees system. Operating room temperature is maintained at 30°C. The primary cause of a rapid decrease in rectal temperature from 36.8°C to 35°C is
- (A) absence of the central temperature control mechanism
- (B) conductive heat loss
- (C) convective heat loss
- (D) evaporative heat loss
- (E) radiant heat loss