Anesthesia Hub -

10 Random Questions

Preoperative evaluation of a patient who has marked malnutrition will demonstrate each of the following EXCEPT

(A) decreased respiratory muscle function
(B) decreased serum albumin concentration
(C) decreased metabolic rate
(D) suppressed immune function
(E) decreased extracellular fluid volume

During direct intra-arterial measurement of blood pressure

(A) the mean arterial pressure will be unaffected by small air bubbles in the system
(B) an underdamped system will overestimate the mean arterial pressure
(C) an underdamped system will overestimate the diastolic pressure
(D) long tubing from the catheter to the transducer will tend to decrease resonance in the system
(E) calibration of the transducer by opening a stopcock to air at the sternal angle will overestimate the mean

BASIC Equipment & Physics

After an axillary brachial plexus block, the patient feels pain when the surgeon clips the skin over the thenar eminence. The most likely cause is inadequate anesthesia in the distribution of the

(A) intercostobrachial nerve
(B) median nerve
(C) musculocutaneous nerve
(D) radial nerve
(E) ulnar nerve

ADVANCED Regional & Pain

An arterial blood sample is obtained from a patient undergoing hypothermic cardiopulmonary bypass at 28 C. Analysis at 37 C shows a pH of 7.40 and PaCO2 of 40 mmHg. Which of the following values are most likely if the analysis is corrected to 28 C?

(A) pH = 7.40; PaCO2 = 40
(B) pH > 7.40; PaCO2 < 40
(C) pH > 7.40; PaCO2 > 40
(D) pH < 7.40; PaCO2 < 40
(E) pH < 7.40; PaCO2 > 40

ADVANCED Equipment & Physics Cardiac

Which of the following statements is true concerning administration of 70% nitrous oxide to a patient with an unrecognized pneumothorax?

(A) Expansion of the pneumothorax by nitrous oxide occurs at a greater rate than expansion of bowel gas
(B) Expansion of the pneumothorax by nitrous oxide occurs at a linear rate
(C) The maximum expansion of a closed space occurs within 15 minutes
(D) The maximum concentration of nitrous oxide achievable within the pneumothorax is 35%
(E) The maximum increase in a closed gas-containing space is 100%

BASIC Pharmacology & Pharmacokinetics

As part of a preoperative evaluation, a patient had a thallium scan showing a 'cold spot' over the left ventricle that occurs with moderate exercise and disappears at rest. This most likely indicates

(A) moderate-sized aneurysm of the left ventricle
(B) acute myocardial ischemia
(C) recent myocardial infarction
(D) old myocardial infarction
(E) Prinzmetal's variant angina

BASIC General Cardiac

Each of the following is an adverse effect of intranasal administration of cocaine prior to nasotracheal intubation EXCEPT

(A) complete heart block
(B) hypertension
(C) myocardial ischemia
(D) seizures
(E) ventricular tachycardia

A parturient receives ketamine 2 mg/kg and succinylcholine 1.5 mg/kg for induction prior to elective cesarean delivery. Which of the following is most likely to be present in the newborn infant?

(A) Normal muscle tone
(B) Bradycardia
(C) Opisthotonos
(D) Respiratory depression
(E) Seizures

ADVANCED Pediatric OB

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

Compared with the response of a normal patient, administration of a bolus dose of pancuronium (0.15 mg/kg) to a patient with cirrhosis and ascites would be associated with

(A) longer duration
(B) more rapid onset
(C) more intense block
(D) more difficult reversibility
(E) similar pharmacokinetics