10 Random Questions
Which of the following features is characteristic of the airway in a neonate?
- (A) Glottis that is located at the level of the C6 vertebral body
- (B) Larger tongue relative to the head than in an adult
- (C) Laryngeal mucosa that is densely adherent to the cartilages
- (D) More posterior glottis than that of an adult
- (E) Narrowest portion of the airway that is located at the arytenoid cartilages
Prompt control of seizures induced by bupivacaine is necessary because
- (A) cerebral metabolic rate for oxygen increases more than cerebral blood flow
- (B) cerebral blood flow is increased
- (C) bupivacaine decreases aerobic cerebral metabolism
- (D) cardiac failure may occur
- (E) ventilation may be impaired
A 70-year-old patient is shivering and has chest pain in the PACU following a cholecystectomy. Heart rate is 120 bpm, and blood pressure is 220/120 mmHg. SpO2 is 97% at an FiO2 of 0.4. An ECG shows ST-T wave changes, which are not affected by intravenous administration of nitroglycerin. Which of the following is the most appropriate next step?
- (A) Administration of esmolol
- (B) Administration of hydralazine
- (C) Administration of nitroprusside
- (D) Application of a warming blanket
- (E) Increasing FiO2
Four days after mitral valve replacement, a 49-year-old, 70-kg woman who has had oliguric renal failure since the operation requires insertion of a Schribner shunt for hemodialysis. Her BUN concentration is 104 mg/dl, serum creatinine is 9.3 mg/dl, serum sodium is 130 mEq/L, and serum potassium is 6.7 mEq/L. During the operation under local anesthesia, diazepam 7.5 mg and morphine 10 mg are administered intravenously to control agitation. Five minutes later while she is sleeping quietly, unifocal premature ventricular contractions appear at a rate of 10 per minute on the ECG monitor. The most appropriate therapy is to
- (A) administer calcium gluconate 250 mg intravenously
- (B) augment ventilation with bag and mask
- (C) administer lidocaine 100 mg intravenously
- (D) administer NaHC03 50 mEq intravenously
- (E) observe only
A healthy 57-year-old man with a ureteral calculus is scheduled for immersion extracorporeal shock wave lithotripsy. Which of the following statements is true?
- (A) Delivery of the shock wave is timed by the R wave of the ECG
- (B) Continuous epidural anesthesia is contraindicated because of the risk for infection
- (C) If a regional technique is used, a T10 sensory level is required for adequate anesthesia
- (D) If general anesthesia is used, high tidal volumes and low respiratory rate are preferred
- (E) Removal of the patient from the bath is accompanied by an increase in blood pressure
Which of the following provides the earliest indication of myocardial ischemia during general anesthesia?
- (A) Cardiac index
- (B) Mixed venous oxygen saturation
- (C) Pulmonary artery occlusion pressure
- (D) Regional ventricular wall motion
- (E) ST-segment depression on ECG
The most sensitive means of detecting venous air embolism is
- (A) precordial Doppler stethoscope
- (B) transesophageal echocardiography
- (C) end-tidal carbon dioxide measurement
- (D) pulmonary artery pressure measurement
- (E) central venous pressure measurement
Which of the following is a characteristic of the Bain breathing circuit?
- (A) Condensation of moisture in inspired gases is facilitated by the circuit design
- (B) Fresh gas flows coaxially around the exhalation limb
- (C) Fresh gas flows need not exceed minute ventilation
- (D) The circuit eliminates the possibility of rebreathing
- (E) The circuit is functionally similar to the Jackson-Rees system
The five curves shown represent the uptake of enflurane, desflurane, halothane, isoflurane, and nitrous oxide. Which uptake curve best depicts desflurane?
- (A) Curve A
- (B) Curve B
- (C) Curve C
- (D) Curve D
- (E) Curve E
Which of the following statements concerning interscalene brachial plexus block is true?
- (A) The three trunks of the plexus are in the same fascial plane as the internal jugular vein
- (B) Distal spread of anesthetic past the humeral head is accelerated by adduction of the arm
- (C) Anesthetic solution can spread up the fascial sheaths to involve the stellate ganglion
- (D) Ipsilateral diaphragmatic paralysis results from epidural spread
- (E) Rich vascularity in the sheaths promotes rapid vascular uptake of anesthetic