Anesthesia Hub -

10 Random Questions

A 72-year-old man has ST-segment depression of 2 mm in ECG lead II immediately after suprarenal aortic clamping. Which of the following is the most likely cause?

(A) Decreased left ventricular stroke volume
(B) Decreased venous return
(C) Increased left ventricular wall tension
(D) Reflex tachycardia
(E) Release of epinephrine from hypoperfused adrenal medulla

High positive end-expiratory pressure can result in each of the following EXCEPT

(A) decreased venous return
(B) increased functional residual capacity
(C) a left-to-right shift of the ventricular septum
(D) decreased PaO2
(E) pulmonary barotrauma

BASIC Respiratory & Critical Care

Cyanide toxicity from nitroprusside is unlikely in patients with renal dysfunction because

(A) renal excretion of thiosulfate is decreased
(B) metabolic acidosis inactivates cyanide
(C) anemia inhibits breakdown of nitroprusside by oxyhemoglobin
(D) thiocyanate is formed in the liver
(E) the dose of nitroprusside necessary to lower blood pressure is greatly decreased

BASIC Pharmacology & Pharmacokinetics

Mepivacaine 40 ml of a 1% solution with epinephrine 1:200,000 is injected into the brachial plexus sheath at the axilla after eliciting a paresthesia in the ulnar nerve distribution. Which of the following is most likely to remain intact?

(A) Adduction of the thumb
(B) Flexion at the wrist
(C) Sensation of the lateral forearm
(D) Sensation on the palmar surface of the lateral three and one half fingers
(E) Sensation on the palmar surface of the medial one and one half fingers

ADVANCED Regional & Pain

Which of the following complications is the primary cause of neurologic deficit following carotid endarterectomy?

(A) Global hypoperfusion
(B) Hypertension
(C) Hypotension
(D) Improper shunt insertion
(E) Thromboembolism

ADVANCED General

The laryngeal mask airway

(A) causes more hemodynamic stimulation than an oropharyngeal airway
(B) is contraindicated in patients with cervical spine instability
(C) is more easily inserted when cricoid pressure is applied
(D) may serve as a temporary airway in case of a failed rapid sequence intubation
(E) requires administration of a muscle relaxant to avoid laryngospasm during insertion

Increasing preload, systemic vascular resistance and heart rate will best maintain hemodynamic stability in patients with

(A) aortic stenosis
(B) asymmetric septal hypertrophy (IHSS)
(C) cardiac tamponade
(D) mitral regurgitation
(E) mitral stenosis

BASIC Cardiac

Two hours after sustaining extensive burns of the head, neck and chest in a house fire, a patient has stridor and difficulty breathing. The most appropriate management is

(A) administration of aerosolized epinephrine
(B) administration of helium and oxygen
(C) endotracheal intubation
(D) intravenous injection of dexamethasone
(E) tracheostomy

ADVANCED General

Which of the following statements concerning cerebral blood flow (CBF) during anesthesia is true?

(A) CBF changes minimally when PaC02 increases from 30 to 40 mmHg
(B) CBF changes minimally when P02 decreases from 160 to 100 mmHg
(C) CBF is autoregulated when mean arterial pressure is 40 mmHg
(D) CBF is coupled to cerebral metabolism during isoflurane anesthesia
(E) CBF is unaffected by 1.2% isoflurane at a PaC02 of 40 mmHg

Microatelectasis 48 hours after abdominal surgery is most consistently manifested by

(A) decreased PaO2
(B) ground glass infiltrate on a roentgenogram of the chest
(C) scattered fine inspiratory rales
(D) increased PaCO2
(E) scattered areas of dullness to chest percussion

BASIC Respiratory & Critical Care