Anesthesia Hub -

10 Random Questions

During controlled ventilation, which of the following will cause an increase in end-tidal carbon dioxide tension with a normal waveform on the capnograph?

(A) Bronchospasm
(B) Rapid blood loss
(C) Ventricular fibrillation
(D) Endobronchial migration of the endotracheal tube
(E) Release of a thigh tourniquet

BASIC General

The human immunodeficiency virus (HIV)

(A) is inactivated by irradiation
(B) is transmitted by cryoprecipitate
(C) is transmitted by 5% albumin
(D) passes through intact dermis
(E) provokes an immediate antibody response

BASIC General

Which of the following statements concerning air embolism during intracranial operations is true?

(A) It does not occur in supine patients
(B) It is prevented by positive end-expiratory pressure
(C) It is confined to the right side of the heart and the pulmonary vasculature
(D) It is detectable by measurement of end-tidal nitrogen
(E) It is most efficiently treated by aspiration from a pulmonary artery catheter

ADVANCED Neuro

A 62-year-old man, who had a myocardial infarction three years ago, complicated by congestive heart failure and renal failure, is undergoing a colectomy. A pulmonary artery catheter demonstrates a cardiac output higher than measurements recorded during a cardiac catheterization two months after the infarction. Which of the following most likely contributes to the increased cardiac output?

(A) Creation of an arteriovenous fistula
(B) Increased hemoglobin concentration from 10 to 12 g/dL
(C) Stimulation of carotid body receptors
(D) Transcutaneous nitroglycerin
(E) Use of a beta-adrenergic blocker to prevent myocardial reinfarction

The last muscle to be affected by an interscalene brachial plexus block is the

(A) brachialis
(B) brachioradialis
(C) biceps
(D) flexor carpi radialis
(E) interosseous

ADVANCED Regional & Pain

Which of the following is LEAST likely to decrease myocardial oxygen supply?

(A) Administration of enflurane
(B) Epidural anesthesia to a sensory level of T6
(C) Increased pulmonary artery occlusion pressure
(D) Hypocarbia (PaCO, 25 mmHg)
(E) Metabolic acidosis (pH 7.20)

In a healthy 70-kg adult, which of the following is the most likely effect of intravenous administration of morphine 10 mg on ventilatory responses?

(A) Increased response to hypoxia and decreased response to hypercarbia
(B) Decreased response to hypercarbia and no change in response to hypoxia
(C) Decreased response to both hypoxia and hypercarbia
(D) No change in response to hypercarbia and decreased response to hypoxia
(E) No change in response to hypoxia or hypercarbia

The best indication that a patient is ready for discharge from an outpatient facility after spinal anesthesia is return of

(A) pinprick sensation to the S4-5 dermatome
(B) micturition
(C) plantar flexion
(D) proprioception of the big toe
(E) knee extension

Which of the following is a sign of cyclosporine toxicity?

(A) Abnormal hepatic enzyme activity
(B) Decreased hemoglobin concentration
(C) Increased serum creatinine concentration
(D) Nodular density on radiograph of the chest
(E) ST-T wave changes on ECG

BASIC Pharmacology & Pharmacokinetics

Which of the following statements concerning the volume of distribution of a drug is true?

(A) It is equal to the sum of the volumes of the tissue spaces into which it diffuses
(B) It is equal to the volume to which it is distributed outside the plasma volume
(C) It is unaltered by the amount bound to red blood cells and plasma proteins
(D) It depends on elimination from plasma
(E) It relates the total amount of the drug in the body to the plasma concentration

BASIC Pharmacology & Pharmacokinetics