Anesthesia Hub -

10 Random Questions

To predict the requirement for isoflurane in milliliters of vapor per minute during closed circuit anesthesia, each of the following is necessary EXCEPT

(A) cardiac output
(B) oxygen consumption
(C) MAC of isoflurane
(D) duration of administration
(E) blood-gas partition coefficient

BASIC Pharmacology & Pharmacokinetics

The adult oxyhemoglobin dissociation curve will resemble that of the fetus in the presence of

(A) increased 2,3-diphosphoglycerate concentration
(B) chronic anemia
(C) hyperthermia
(D) metabolic alkalemia
(E) hyperkalemia

ADVANCED Respiratory & Critical Care Pediatric

A 65-kg man is scheduled for wrist surgery with intravenous regional anesthesia with 0.5% lidocaine 50 ml. Which of the following statements is true?

(A) This anesthetic is contraindicated if the patient has sickle cell disease
(B) Mottling of the skin after injection dictates abandonment of the technique
(C) Tourniquet discomfort is an indication to inject more local anesthetic
(D) Bupivacaine 0.5% could be substituted to prolong anesthesia
(E) Epinephrine (1:400,000) should be added to prolong anesthesia

ADVANCED Regional & Pain

A patient is placed in the prone jackknife position for lumbar subarachnoid injection of tetracaine 10 mg in 10 ml of preservative-free sterile water. Which of the following results is most likely?

(A) Respiratory insufficiency
(B) Sensory and motor block at T4-S1
(C) Sensory and motor block at L1-S5
(D) Sensory loss without motor block at L1-S5
(E) Sensory and motor block at S3-S5

ADVANCED Regional & Pain

Compared with healthy persons, patients with myasthenic (Eaton-Lambert) syndrome have increased

(A) resistance to vecuronium
(B) response to neostigmine during reversal of muscle paralysis
(C) sensitivity to succinylcholine
(D) susceptibility to development of malignant hyperthermia
(E) weakness with repetitive activity

Ten days after sustaining burns over 40% of his body surface area, a patient requires greater than expected doses of vecuronium for adequate relaxation of skeletal muscle. The primary cause is increased

(A) plasma protein binding of d-tubocurarine
(B) metabolism of d-tubocurarine
(C) number of acetylcholine receptors
(D) renal clearance of d-tubocurarine
(E) blood flow to skeletal muscle

BASIC Pharmacology & Pharmacokinetics

Cardiac output measured by thermodilution with a pulmonary artery catheter most accurately reflects systemic blood flow in a patient with

(A) aortic regurgitation
(B) atrial septal defect
(C) patent ductus arteriosus
(D) tricuspid insufficiency
(E) ventricular septal defect

ADVANCED Equipment & Physics Cardiac

Compared with general anesthesia, epidural anesthesia for hip arthroplasty is associated with

(A) decreased incidence of perioperative myocardial ischemia
(B) decreased intraoperative blood loss
(C) decreased risk for acute renal failure
(D) increased risk for stress-induced hyperglycemia
(E) increased thromboembolic complications

A 45-year-old woman undergoes aortic valve replacement for aortic stenosis. Two minutes after removal of the venous cannulae, air is noted in the arterial inflow cannula. Heart rate is 80 bpm, blood pressure is 95/60 mmHg, and cardiac index is 1.5 L/min/m2. ST-segment elevation is noted in EKG leads II, III, and aVF. The most appropriate next step is to

(A) administer thiopental
(B) decrease left ventricular afterload
(C) increase arterial blood pressure
(D) replace the left ventricular vent
(E) resume cardiopulmonary bypass

DC shocks of 200 joules applied directly to the heart are likely to

(A) worsen coronary perfusion
(B) prevent postshock arrhythmias
(C) produce myocardial contractile abnormalities
(D) increase myocardial impedance
(E) decrease myocardial temperature

ADVANCED General