Anesthesia Hub -

10 Random Questions

Each of the following changes is expected with deliberate hypothermia EXCEPT

(A) decreased unloading of oxygen from hemoglobin
(B) a 5% decrease in MAC for each 1°C decrease in temperature
(C) increased arterial oxygen and carbon dioxide contents
(D) a 50% decrease in cerebral metabolic rate at 28°C
(E) spike and dome EEG activity at temperatures below 30°C

BASIC General Cardiac

Each of the following is associated with an increased alveolar-arterial oxygen tension difference EXCEPT

(A) advanced age
(B) atelectasis
(C) decreased cardiac output
(D) decreased Fl02
(E) right-to-left intracardiac shunt

A 65-kg 70-year-old man in the PACU is breathing spontaneously at 20/min through an endotracheal tube connected to a T-piece with a fresh gas flow of 5 L/min. He has a tidal volume of 350 mL and an FiO2 of 0.5. SpO2 decreases from 98% to 84% over one hour, then improves to 92% with an FiO2 of 1.0. Which of the following is the most likely cause of the hypoxemia?

(A) Decreased functional residual capacity
(B) Increased dead space ventilation
(C) Inhibition of hypoxic pulmonary vasoconstriction
(D) Room air admixture during inspiration
(E) Shivering

BASIC Respiratory & Critical Care

Compared with blood anticoagulated with CPD, blood stored in CPDA-1 has

(A) better preservation of 2,3-DPG concentration
(B) better preservation of ATP concentration in erythrocytes
(C) shorter erythrocyte survival
(D) shorter shelf life
(E) decreased platelet aggregation

BASIC Transfusions & Fluids

Which of the following is described by the standard deviation during analysis of the results of a clinical study?

(A) Central tendency of the study results
(B) Distribution of the results of the study group
(C) Range of the results of the study group
(D) Regression analysis of the study group
(E) Statistical significance of the difference between the study groups

BASIC General

Measurement of which of the following provides the most reliable information about the severity of bronchospasm?

(A) Diffusing capacity
(B) Expiratory reserve volume
(C) Forced expiratory volume in 1 second
(D) Residual volume
(E) Total lung capacity

BASIC Respiratory & Critical Care

Which of the following is a sign of cyanide toxicity during nitroprusside therapy?

(A) Decreased SpO2
(B) Increased PaCO2
(C) Increased arteriovenous oxygen tension difference
(D) Increased mixed venous pH
(E) Increased mixed venous PO2

BASIC Pharmacology & Pharmacokinetics

Which of the following drugs has the shortest elimination half-life?

(A) Diazepam
(B) Flumazenil
(C) Flumazepam
(D) Lorazepam
(E) Midazolam

BASIC Pharmacology & Pharmacokinetics

A 77-year-old woman is still intubated and breathing spontaneously following a total hip replacement. The muscle relaxant has been reversed. Tidal volume is 400 ml, end-tidal carbon dioxide tension is 45 mmHg, and SpO2 is 98% at an FiO2 of 1.0. On transfer from the operating table to the gurney, heart rate increases from 65 to 100 bpm and blood pressure decreases from 130/80 to 80/50 mmHg. End-tidal carbon dioxide tension is 30 mmHg and SpO2 is 94%. The most likely diagnosis is

(A) anaphylactic reaction
(B) bronchospasm
(C) myocardial infarction
(D) pulmonary embolism
(E) unreplaced blood loss

BASIC General

Desflurane at a stable alveolar concentration of 7%

(A) causes bradycardia
(B) decreases cerebrovascular resistance
(C) degrades in soda lime
(D) increases systemic vascular resistance
(E) stimulates the respiratory centers

BASIC Equipment & Physics Pharmacology & Pharmacokinetics