Anesthesia Hub -

10 Random Questions

A 45-year-old man with chronic liver failure is scheduled for liver transplantation. Which of the following preoperative findings is most likely?

(A) Hypoxemia
(B) Increased platelet count
(C) Increased systemic vascular resistance
(D) Increased serum factor VIII concentration
(E) Metabolic alkalosis

ADVANCED General

Which of the following is the most likely effect of infrarenal cross clamping of the aorta without pharmacologic manipulation?

(A) Decreased cardiac output
(B) Decreased pulmonary artery occlusion pressure
(C) Increased left ventricular stroke volume
(D) Increased renal blood flow
(E) Improved myocardial oxygen supply-demand ratio

ADVANCED General

The EEG of a patient undergoing anesthesia with high-dose fentanyl would most likely show

(A) the same pattern seen with enflurane 0.5 MAC
(B) cessation of low-frequency activity
(C) accentuation of high-frequency activity
(D) uniform depression of all frequencies
(E) low-frequency, high-amplitude activity

Deliberate hypothermia and circulatory arrest is planned for clipping of a giant basilar artery aneurysm. Which of the following statements is true?

(A) Administration of a muscle relaxant slows the cooling process
(B) Anesthesia is not required if body temperature is below 31°C
(C) Decreasing body temperature below the level at which the EEG is isoelectric further decreases cerebral metabolic rate for oxygen
(D) Sinus bradycardia during cooling results from increased intracranial pressure
(E) T-wave inversion during cooling indicates myocardial ischemia

ADVANCED Neuro

In patients with blunt head trauma, cerebral perfusion pressure is determined by the gradient between

(A) diastolic pressure and central venous pressure
(B) intracranial pressure and central venous pressure
(C) mean arterial pressure and central venous pressure
(D) mean arterial pressure and intracranial pressure
(E) systolic pressure and intracranial pressure

BASIC Neuro

A man with alcoholic cirrhosis and a hemoglobin concentration of 10 g/dl has an intraoperative PaO2 of 75 mmHg at an FiO2 of 0.5. Which of the following is the most likely cause of the low PaO2?

(A) Anemia
(B) Decreased cardiac output
(C) Increased dead space
(D) Intrahepatic arteriovenous shunts
(E) Intrapulmonary arteriovenous shunts

ADVANCED General

When treating reflex sympathetic dystrophy of an arm, which of the following is the best indicator of a successful sympathetic blockade?

(A) A pinprick sensory deficit in the distribution of C6
(B) A 5°C increase in the temperature of the skin of the hand
(C) An accentuated psychogalvanometric response in the forearm
(D) An ipsilateral positive Horner's syndrome
(E) Decreased temperature sensation in the hand

In the supraclavicular region, the brachial plexus

(A) is anterior to the apex of the pleura
(B) is anterior to the subclavian artery
(C) is posterior to the medial scalene muscle
(D) is enclosed in a sheath with the subclavian vein
(E) no longer contains fibers from the Tl nerve root

The following hemodynamic values are obtained two hours after coronary artery bypass surgery: Cardiac index 1.7 L/min/m2; Pulm Art. Occ. Pressure 22 mmHg; MAP 60 mmHg; Urine volume 0.2 ml/kg/hr. The most appropriate management is

(A) dopamine infusion
(B) nitroprusside infusion
(C) norepinephrine infusion
(D) volume expansion
(E) observation without intervention

ADVANCED Pharmacology & Pharmacokinetics Cardiac

During general anesthesia using a modern anesthesia machine, a patient's spontaneous ventilation is manually assisted with a fresh gas flow of 5 L/min. A sudden malfunction of the pressure-relief (pop-off) valve of the circle absorption system occurs, and the valve cannot be opened. The most appropriate next step is to

(A) change to a smaller reservoir bag
(B) increase total fresh gas flow
(C) open the scavenger valve
(D) control ventilation manually
(E) switch to mechanical ventilatory mode

BASIC Equipment & Physics