10 Random Questions
A normal adult is receiving general anesthesia via a standard circle system and controlled ventilation. Mass spectrometer data are shown. Which event is most compatible with these data?
- (A) Endobronchial intubation
- (B) Hemorrhagic shock
- (C) Incompetent expiratory valve
- (D) Substantial decrease in fresh gas flow
- (E) Venous air embolism
Each of the following values is associated with acute tubular necrosis EXCEPT
- (A) urine osmolality of 200 mOsm/kg
- (B) urine sodium concentration of 15 mEq/L
- (C) urine specific gravity of 1.009
- (D) urine/serum osmolarity ratio of 1.2
- (E) fractional excretion of sodium of 4%
The induction dose of thiopental should be decreased in each of the following situations EXCEPT
- (A) age greater than 70 years
- (B) cardiogenic shock
- (C) decreased hepatic blood flow
- (D) hypoalbuminemia
- (E) hypothyroidism
During transurethral resection of the prostate, intravascular absorption of glycine irrigant most commonly produces
- (A) alkalosis
- (B) hemolysis
- (C) hypertension
- (D) tachycardia
- (E) wheezing
A 157 cm (5 ft 2 in), 180-kg, 40-year-old woman has a PaO2 of 65 mmHg, a PaCO2 of 38 mmHg, and a pH of 7.43 while breathing room air preoperatively. The most likely cause of these values is
- (A) decreased hypoxic ventilatory drive
- (B) higher than normal oxygen extraction from blood
- (C) lower than normal cardiac output
- (D) lower than normal functional residual capacity
- (E) polycythemia
A 58-year-old man undergoes repeat coronary artery bypass grafting. Which of the following is LEAST likely to decrease the need for exogenous blood transfusion?
- (A) Cell saver blood collection before and after cardiopulmonary bypass
- (B) Epsilon-aminocaproic acid administered during cardiopulmonary bypass
- (C) High-dose aprotinin administered during cardiopulmonary bypass
- (D) Tranexamic acid infusion during cardiopulmonary bypass
- (E) Desmospressin administered after cardiopulmonary bypass
Trimethaphan causes each of the following EXCEPT
- (A) cerebral vasodilation
- (B) urinary retention
- (C) pupillary cycloplegia
- (D) histamine release
- (E) potentiation of succinylcholine block
Which of the following is an effect of clonidine?
- (A) Agitation
- (B) Salivation
- (C) Tachycardia
- (D) Tachypnea
- (E) Vasodilation
A 70-kg man with ischemic heart disease is undergoing abdominal aortic aneurysm resection. At the time of infrarenal cross-clamping, 0.2-mV ST-segment depression appears on lead V5 of the ECG. Hemodynamic changes occurring at the same time are shown below. Systemic blood pressure 90/50 --> 150/90; Heart rate 80 --> 95; PAp 20/10 --> 45/24; Mean pulmonary artery occlusion pressure (mmHg) 10 --> 23; Cardiac output (L/min) 4.5 --> 3.2. Ischemia would be decreased by restoring the pre-clamp level of each of the following EXCEPT
- (A) blood pressure
- (B) heart rate
- (C) pulmonary artery pressure
- (D) pulmonary artery occlusion pressure
- (E) cardiac output
Initiation of positive pressure mechanical ventilation is LEAST likely to decrease cardiac output in patients with which of the following conditions?
- (A) Abdominal distention with decreased lung volume
- (B) Acute cardiogenic pulmonary edema
- (C) Chronic obstructive pulmonary disease
- (D) Flail chest following an automobile accident
- (E) 20% Right pneumothorax