10 Random Questions

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

ADVANCED General Cardiac

Preoperative evaluation of a patient who has marked malnutrition will demonstrate each of the following EXCEPT

BASIC General

Which of the following processes is primarily responsible for the decrease in core body temperature that occurs during the first hour of general anesthesia?

BASIC General

During transurethral resection of the prostate, intravascular absorption of glycine irrigant most commonly produces

ADVANCED General

A 4-year-old child with myelomeningocele and a ventriculoperitoneal shunt is scheduled for bladder augmentation. One year ago, hypotension and bronchospasm occurred during laparotomy for placement of a feeding gastrostomy and responded to fluids and epinephrine. At that time, anesthesia was induced with thiopental, the trachea was intubated with a polyvinyl tracheal tube following administration of succinylcholine, and anesthesia was maintained with halothane and nitrous oxide. No diagnostic tests were performed after that incident. Which of the following should be avoided during the bladder augmentation?

ADVANCED Pediatric

Which of the following statements concerning the choice of nitroprusside or nitroglycerin to induce deliberate hypotension is true?

During rapid-sequence induction prior to an emergency surgical procedure, a 20-year-old patient vomits gastric contents containing particulate matter. An endotracheal tube is easily inserted and ventilation with pure oxygen is initiated. Despite the presence of bilateral breath sounds, SpO2 is 90%. Which of the following is the most appropriate next step?

BASIC Respiratory & Critical Care General

Compared with epidural morphine, intrathecal morphine produces

ADVANCED Regional & Pain

The cardiovascular effects of an inhalational anesthetic are evaluated in 10 normal volunteers in the awake resting state and after 15 minutes of constant inspired concentration. Results were analyzed by t-test for paired data and are presented below as mean +/- standard deviation. Based on these data, which of the following conclusions is most valid?

BASIC General

A 70-year-old patient has absence of the left radial pulse one month after repair of an aortic aneurysm. Arterial pressure was monitored perioperatively with a 20-gauge left radial artery catheter. Which of the following statements concerning this complication is true?