Anesthesia Hub -

10 Random Questions

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

Each of the following statements about the blood supply of the spinal cord is true EXCEPT:

(A) The anterior spinal artery is made up of branches from the vertebral, intercostal, and iliac arteries
(B) The segmental blood supply of the cord depends upon the location of the arteria radicularis magna (Adamkiewicz)
(C) The posterior spinal arteries supply most of the spinal cord
(D) Obstruction of the inferior vena cava increases blood flow through the epidural venous plexus
(E) The spinal cord is supplied by one anterior spinal artery and two posterior spinal arteries

BASIC Neuro

Which surface area of the upper extremity is most likely to be unanesthetized by an interscalene brachial plexus block?

(A) Hypothenar eminence
(B) Thenar eminence
(C) Dorsolateral surface of the hand
(D) Lateral aspect of the forearm
(E) Lateral surface of the upper arm

ADVANCED Regional & Pain

During cardiopulmonary bypass at a nasopharyngeal temperature of 28°C and a hematocrit of 20%, temperature-corrected PaCO2 is 50 mmHg and uncorrected PaCO2 is 60 mmHg. The most appropriate management is to

(A) administer additional opioid
(B) administer packed red blood cells to increase hematocrit to 25%
(C) further decrease the patient's temperature
(D) increase fresh gas flow to the oxygenator
(E) institute mechanical ventilation

ADVANCED Cardiac

Fresh frozen plasma is indicated in each of the following situations EXCEPT

(A) after rapid transfusion of 1.5 L CPD-stored red blood cells
(B) antithrombin III deficiency
(C) replacement of factor VIII
(D) reversal of warfarin effect
(E) thrombotic thrombocytopenic purpura

BASIC Transfusions & Fluids

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

The rate of induction with inhalational agents is more rapid in neonates than adults because of a relatively increased

(A) cardiac output
(B) cerebral blood flow
(C) functional residual capacity
(D) metabolic rate
(E) minute ventilation

ADVANCED Pediatric

A 60-kg, 70-year-old man requires open reduction and internal fixation of an intertrochanteric fracture sustained 24 hours ago. Serum creatinine concentration is 1 mg/dl and blood urea nitrogen concentration is 40 mg/dl. The most likely cause of these findings is

(A) acute tubular necrosis
(B) chronic renal insufficiency
(C) dehydration
(D) obstruction of the bladder outlet
(E) recent gastrointestinal hemorrhage

BASIC General

A healthy 18-year-old youth is scheduled for an emergency operation for removal of a steel splinter from his right iris. Anesthesia is induced with thiopental and pancuronium and, following tracheal intubation, is maintained with nitrous oxide 2 liters, oxygen 2 liters, and halothane 1.5%. Conjunctival instillation of phenylephrine solution 10% increases blood pressure from 110/70 to 230/110 mmHg and decreases pulse from 70 to 46 bpm. The ECG shows a bigeminal pattern. The most appropriate treatment is to

(A) administer lidocaine
(B) administer atropine
(C) administer propranolol
(D) decrease halothane
(E) administer nitroprusside

Which of the following is the most likely cause of apnea occurring after a retrobulbar block?

(A) Epidural injection
(B) Increased intracranial pressure
(C) Oculopontine reflex
(D) Ophthalmic artery injection
(E) Subarachnoid injection

ADVANCED Regional & Pain