10 Random Questions
Block of each of the following nerves is required for inguinal herniorrhaphy EXCEPT the
- (A) genitofemoral
- (B) iliohypogastric
- (C) ilioinguinal
- (D) obturator
- (E) twelfth thoracic
The EKG rhythm shown developed during cholecystectomy in a 62-year-old man who had a myocardial infarction and is taking atenolol. The drug of choice for treating this arrhythmia is
- (A) atropine
- (B) bretylium
- (C) isoproterenol
- (D) lidocaine
- (E) procainamide
During attempted awake intubation, the patient gags when the laryngoscope presses on the base of the tongue. Which of the following cranial nerves is responsible for the afferent limb of this reflex?
- (A) Trigeminal
- (B) Facial
- (C) Glossopharyngeal
- (D) Vagus
- (E) Hypoglossal
If a patient with excessive bleeding during exploratory laparotomy has a normal activated clotting time, the LEAST likely cause of the bleeding is
- (A) antithrombin III deficiency
- (B) dilutional thrombocytopenia
- (C) fibrinolysis
- (D) administration of heparin 5000 units
- (E) preoperative ingestion of aspirin
A normotensive 66-year-old man undergoes total hip arthroplasty. Mean arterial pressure is maintained at 60 mmHg with isoflurane and labetalol; intraoperative FiO2 is 1.0. Eight units of red blood cells are administered intraoperatively because of an injury to the femoral artery. Five days later, the patient develops jaundice. Which of the following is the most likely cause of the jaundice?
- (A) Delayed hemolysis from transfusion
- (B) Heart failure with hepatic congestion
- (C) Hepatocellular injury from labetalol
- (D) Intraoperative hypotension
- (E) Isoflurane-associated hepatitis
The most important factor regulating blood flow to ischemic cerebral tissue is
- (A) systolic blood pressure
- (B) PaO2
- (C) cerebral perfusion pressure
- (D) PaCO2
- (E) cerebral oxygen consumption
Which of the following factors is LEAST predictive of postoperative cardiac complications?
- (A) Congestive heart failure
- (B) Major vascular surgery
- (C) Premature ventricular contractions
- (D) Preoperative hypertension
- (E) Recent myocardial infarction
During general anesthesia administered through a circle system, the soda lime absorbant is exhausted. No fresh soda lime is available for use. Which of the following is the most appropriate next step to prevent hypercapnia in this patient?
- (A) Decreasing the dead space of the circle system
- (B) Discontinuing nitrous oxide
- (C) Increasing the fresh gas flow
- (D) Increasing tidal volume
- (E) Switching to spontaneous ventilation
In a patient with adult respiratory distress syndrome who is being mechanically ventilated, which of the following findings indicates the most severe disease?
- (A) Decreased functional residual capacity
- (B) Decreased lung compliance
- (C) Hypercarbia
- (D) Hypoxemia
- (E) Increased dead space
A 70-year-old man has a pacemaker set at VOO mode at 70 bpm with temporary atrial and ventricular wires placed prior to separation from cardiopulmonary bypass. Fifteen minutes after separation, he develops atrial fibrillation with a ventricular response of 80 to 100 bpm. Which of the following ECG findings is most likely?
- (A) Irregular atrial and ventricular complexes with loss of pacer artifacts
- (B) Irregular ventricular complexes with preserved ventricular pacer artifacts at 70 bpm
- (C) Occasional pacer artifacts when intrinsic ventricular rate is slower than 70 bpm
- (D) Regular ventricular complexes at 70 bpm
- (E) Ventricular complexes with preserved atrial and ventricular pacer artifacts at 70 bpm