Anesthesia Hub -

10 Random Questions

When using a Venturi face mask with a reservoir bag

(A) a known constant FiO2 is delivered
(B) the reservoir bag ensures predictable FiO2 while conserving fresh gas flow
(C) low fresh gas flows will not decrease FiO2
(D) the system prevents hypocarbia during tachypnea
(E) the system increases anatomic dead space

BASIC Equipment & Physics

In a patient undergoing liver transplantation, sodium bicarbonate and calcium chloride are administered immediately before reperfusion of the transplanted liver to counteract

(A) coagulopathy
(B) decreased cardiac output
(C) hyperkalemia
(D) hypermagnesemia
(E) hypotension

ADVANCED General

The principal rationale for the use of warmed humidified inspired anesthetic gases in children is to

(A) decrease postoperative respiratory complications
(B) decrease postoperative shivering
(C) preserve ciliary function
(D) prevent dehydration
(E) prevent evaporative heat loss

ADVANCED Equipment & Physics Pediatric

In pregnant patients, which of the following is an effect of the long-term use of cocaine?

(A) Decreased uterine tone
(B) Decreased thiopental requirement
(C) Increased isoflurane MAC
(D) Increased sensitivity to ephedrine
(E) Lower than expected level of block with tetracaine spinal analgesia

ADVANCED OB

A 60-kg, 45-year-old woman who takes digoxin for atrial fibrillation receives furosemide 40 mg and mannitol 60 g during resection of a supratentorial meningioma. After initiation of hyperventilation to decrease PaC02 from 35 to 20 mmHg, multifocal premature ventricular contractions are noted on the ECG. The most likely cause is

(A) acute hypokalemia
(B) cerebral ischemia
(C) impending herniation of the brain stem
(D) paradoxical air embolism
(E) surgical manipulation of the meningioma

Which of the following is the most sensitive indicator of impending renal failure following trauma?

(A) Central venous pressure
(B) Creatinine clearance
(C) Fractional excretion of sodium
(D) Hourly urine output
(E) Urine osmolality

ADVANCED General

Block of the superficial cervical plexus is performed at which location?

(A) At the midposterior border of the sternocleidomastoid muscle
(B) In the interscalene groove
(C) Over the mastoid process
(D) Over the transverse process of C4
(E) Over Chassaignac's tubercle

ADVANCED Regional & Pain

As part of a preoperative evaluation, a patient had a thallium scan showing a 'cold spot' over the left ventricle that occurs with moderate exercise and disappears at rest. This most likely indicates

(A) moderate-sized aneurysm of the left ventricle
(B) acute myocardial ischemia
(C) recent myocardial infarction
(D) old myocardial infarction
(E) Prinzmetal's variant angina

BASIC General Cardiac

Compared with an induction dose of thiopental (4 mg/kg), an induction dose of propofol (2.5 mg/kg) produces

(A) better maintenance of cerebral perfusion pressure
(B) greater inhibition of glucocorticoid production
(C) higher incidence of myoclonus
(D) less severe hypotension
(E) less severe respiratory depression

BASIC Pharmacology & Pharmacokinetics

Compared with blood anticoagulated with CPD, blood stored in CPDA-1 has

(A) better preservation of 2,3-DPG concentration
(B) better preservation of ATP concentration in erythrocytes
(C) shorter erythrocyte survival
(D) shorter shelf life
(E) decreased platelet aggregation

BASIC Transfusions & Fluids