Anesthesia Hub -

10 Random Questions

During Harrington rod instrumentation for scoliosis, monitoring somatosensory evoked potentials

(A) is unreliable if halothane is used
(B) eliminates the need for a wake-up test
(C) accurately assesses proprioceptive integrity
(D) accurately assesses motor function integrity
(E) is unreliable if nondepolarizing muscle relaxants are used

ADVANCED Pediatric Neuro

During ligation of a patent ductus arteriosus, a newborn infant receives a total gas flow of 5 L/min through a nonheated Jackson-Rees system. Operating room temperature is maintained at 30°C. The primary cause of a rapid decrease in rectal temperature from 36.8°C to 35°C is

(A) absence of the central temperature control mechanism
(B) conductive heat loss
(C) convective heat loss
(D) evaporative heat loss
(E) radiant heat loss

ADVANCED Pediatric

A 70-year-old man who has just undergone an abdominal aortic aneurysm repair under halothane anesthesia develops hypertension, dyspnea, and cyanosis shortly after awakening in the recovery room. Administration of furosemide 20 mg intravenously improves the cyanosis within 10 minutes. This immediate effect of furosemide is best explained by

(A) inotropic effect from electrolyte shifts
(B) decreased preload through diuresis
(C) increased peripheral venous capacitance
(D) decreased pulmonary vascular resistance
(E) increased coronary blood flow

ADVANCED Pharmacology & Pharmacokinetics General

Which of the following is the most common initial manifestation of malignant hyperthermia?

(A) Hyperkalemia
(B) Increased distal esophageal temperature
(C) Increased PETCO2
(D) Red discoloration of urine
(E) Ventricular irritability

BASIC General

A 26-year-old woman has headache, nausea, and photophobia 36 hours after cesarean delivery for chorioamnionitis using subarachnoid block. Temperature is 38.8°C and leukocyte count is 14,200/mm3. Which of the following is the most appropriate next step in management?

(A) Oral ibuprofen
(B) Intravenous caffeine sodium benzoate
(C) Intravenous hydration
(D) Epidural blood patch
(E) Diagnostic lumbar puncture

ADVANCED OB

Carbon monoxide poisoning with a carboxyhemoglobin concentration of 20% is characterized by each of the following EXCEPT

(A) decreased oxygen-carrying capacity of hemoglobin
(B) decreased PaO2
(C) shift of the oxyhemoglobin dissociation curve to the left
(D) normal minute volume of ventilation
(E) headache and nausea

BASIC Respiratory & Critical Care

During one-lung ventilation, each of the following affects hypoxic pulmonary vasoconstriction in the nonventilated lung EXCEPT

(A) application of continuous positive airway pressure to the nonventilated lung
(B) high alveolar pO2 in the ventilated lung
(C) infusion of isoproterenol
(D) low mixed venous pO2
(E) pulmonary hypertension

ADVANCED Respiratory & Critical Care General

During an aortic aneurysm repair, end-tidal carbon dioxide tension decreases from 35 to 20 mmHg in three breaths. The most likely cause is

(A) acute arteriovenous fistula
(B) bronchospasm
(C) decreased cardiac output
(D) increased tidal volume
(E) venous air embolism

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

In a patient with chronic congestive heart failure, the safest pharmacologic approach to brain swelling during a craniotomy is

(A) dexamethasone
(B) furosemide
(C) mannitol
(D) thiopental
(E) urea