Anesthesia Hub -

10 Random Questions

Which of the following is the LEAST likely cause of a prolonged prothrombin time?

(A) Chronic warfarin therapy
(B) Disseminated intravascular coagulation
(C) Hemophilia A
(D) Systemic heparinization
(E) Vitamin K deficiency

ADVANCED General

A 76-year-old man has a leaking abdominal aortic aneurysm. His blood pressure and pulse have remained stable for 15 minutes at 90/60 mmHg and 130 bpm, respectively. His hemoglobin concentration is 11 g/dl, and the EKG shows a left bundle branch block. Induction of anesthesia should proceed

(A) after a pulmonary artery catheter has been inserted and the pulmonary artery occlusion pressure is greater than 7 mmHg
(B) when the pulse has decreased below 130 bpm from the rapid transfusion of blood
(C) when systolic blood pressure has increased to more than 120 mmHg from the rapid infusion of lactated Ringer's solution
(D) immediately on arrival in the operating room
(E) when circulatory signs deteriorate or cease to improve with rapid volume expansion

ADVANCED General

Which of the following is most likely to increase hepatic blood flow during general anesthesia?

(A) Addition of positive end-expiratory pressure
(B) Discontinuation of isoflurane and administration of enflurane
(C) Increased PaCO2
(D) Moderate controlled hypotension
(E) Subarachnoid administration of morphine

BASIC General

A patient has pain in the left thoracic wall associated with metastatic rib lesions. An intrathecal neurolytic block with 6% phenol in glycerin is planned for pain relief. Prior to performing the block, the patient should be placed in which of the following positions?

(A) Left lateral semisupine
(B) Right lateral semisupine
(C) Left lateral semiprone
(D) Right lateral semiprone
(E) Prone

ADVANCED Regional & Pain

A burn is found at the site of the electrocautery pad. Which of the following is most likely?

(A) The electrosurgical unit was in the bipolar mode
(B) The electrocautery pad became partially detached
(C) The electrosurgical unit ground wire was severed
(D) The line-isolation monitor alarmed
(E) The patient became grounded

BASIC Equipment & Physics

An air/oxygen blender with E-size cylinders is supplying gas to a Mapleson D circuit being used to ventilate a neonate during transport. The air tank is full (psi= 1900/625 L) and flow is 4 L/min. The oxygen tank flow is 5 L/min and the pressure gauge indicates 500 psi. If the flow rates remain unchanged, which of the following statements is correct?

(A) The air tank will be empty in 90 minutes
(B) The oxygen tank will be empty in 30 minutes
(C) The concentration of oxygen in the circuit is 60%
(D) The oxygen tank will fill with air when the pressure gauge falls below 50 psi
(E) The volume of oxygen remaining can be determined only by weighing the tank

BASIC Equipment & Physics

Each of the following would be expected in an otherwise healthy 165-kg woman undergoing cholecystectomy EXCEPT

(A) decreased functional residual capacity
(B) decreased ventilatory response to carbon dioxide
(C) increased cardiac output
(D) increased gastric fluid volume
(E) increased metabolism of volatile anesthetics

ADVANCED General

A patient who had liver transplantation two years ago now requires general anesthesia for ENT surgery. Minimal rejection has occurred on a regimen of cyclosporine and prednisone. Which of the following is most likely?

(A) Hypoalbuminemia
(B) Hypocalcemia
(C) Episodic hypoglycemia
(D) Increased serum creatinine concentration
(E) Prolonged prothrombin time

ADVANCED General

Maximum current is delivered to the myocardium by a countershock for defibrillation when

(A) paddle contact pressure is minimal
(B) petroleum jelly is used under the paddles
(C) previous countershocks of the same power have been attempted
(D) the patient is grounded securely
(E) the shock is applied at the end of inspiration

BASIC Equipment & Physics

A 40-year-old man is undergoing open reduction and internal fixation of a fractured femur. During anesthesia with fentanyl, sevoflurane, and oxygen, heart rate decreases to 20 bpm and 6 premature ventricular contractions per minute are noted. No pulse is detected. The most appropriate next step is to

(A) administer atropine
(B) administer epinephrine
(C) administer lidocaine
(D) apply a transthoracic pacemaker
(E) start cardiopulmonary resuscitation

BASIC General