Anesthesia Hub -

10 Random Questions

The concentration effect is greater with nitrous oxide than with the volatile anesthetics because nitrous oxide

(A) has a lower blood-gas partition coefficient
(B) has less effect on cardiac output (0 has lower lipid solubility
(D) is affected less by ventilation-perfusion mismatch
(E) is used in much higher concentrations

Long-term use of cimetidine is associated with

(A) delayed emergence after thiopental induction
(B) increased hypotension after morphine
(C) increased risk for isoflurane-induced nephrotoxicity
(D) prolonged action of succinylcholine
(E) prolonged sedation with diazepam

Which of the following perioperative interventions decreases the risk for renal insufficiency in patients undergoing aortic aneurysm repair?

(A) Administration of furosemide
(B) Administration of mannitol
(C) Administration of renal-dose dopamine
(D) Epidural anesthesia
(E) Preoperative volume expansion

ADVANCED General

Maternal hyperventilation produces

(A) decreased maternal arterial pH
(B) increased fetal cerebral blood flow
(C) increased fetal arterial pH
(D) decreased maternal uterine artery flow
(E) increased fetal arterial P02

The vapor pressure of a volatile anesthetic depends on

(A) temperature only
(B) ambient pressure only
(C) temperature and ambient pressure
(D) pressure and volume of the system
(E) none of the above

BASIC Equipment & Physics

Following protamine administration, profound pulmonary hypertension is most likely initiated by release of

(A) epinephrine
(B) histamine
(C) leukotriene
(D) norepinephrine
(E) thromboxane

ADVANCED Pharmacology & Pharmacokinetics Cardiac

A 37-year-old woman with pregnancy-induced hypertension develops oliguria two hours after cesarean delivery during epidural .anesthesia. Despite infusion of 2000 mL of crystalloid solution, urine output remains 10 mL/hr. Which of the following laboratory findings is most suggestive of acute tubular necrosis?

(A) Blood urea nitrogen level of 30 mg/dL
(B) Serum creatinine level of 1.2 mg/dL
(C) Urinary/plasma osmolality of 1:1
(D) Urinary sodium level of 10 mEq/L
(E) Urinary specific gravity of 1.024

Which of the following nerves should be blocked for an operation at the medial aspect of the lower leg?

(A) Femoral
(B) Sciatic
(C) Obturator
(D) Common peroneal
(E) Tibial

A 55-year-old man who is scheduled to undergo carotid endarterectomy (CEA) has a persistent myocardial filling defect at three hours on a dipyridamole-thallium scan. Which of the following statements is correct?

(A) Coronary autoregulation is effective in this segment
(B) Coronary revascularization should precede CEA
(C) Isoflurane is contraindicated
(D) Myocardial infarction is impending
(E) There is a segment of nonviable myocardium

ADVANCED General Cardiac

Which of the following is the most likely sequela of interscalene brachial plexus block?

(A) Cervical epidural block
(B) Hemidiaphragmatic paralysis
(C) Pneumothorax
(D) Seizure
(E) Vocal cord paralysis

ADVANCED Regional & Pain