Anesthesia Hub -

10 Random Questions

With respect to mechanical ventilation, which of the following statements concerning the portion of tidal volume known as compression volume is true?

(A) It is calculated by dividing the volume of gas delivered to the patient by the peak pressure
(B) It does not contribute to the volume of gas entering the patient
(C) It is not included in the volume measured by a spirometer on the inspiratory limb
(D) It decreases with the addition of a humidifier to the breathing circuit
(E) It decreases with the addition of one-way valves at the Y connector of the breathing circuit

BASIC Equipment & Physics

A patient has palpitations, flushing, and light-headedness after gingival injection of a local anesthetic. This reaction is most likely caused by

(A) epinephrine in the local anesthetic
(B) local anesthetic allergy
(C) para-aminobenzoic acid allergy
(D) methylparaben reaction
(E) vasovagal reaction

BASIC Pharmacology & Pharmacokinetics

Compared with similar use in adults, routine use of succinylcholine in children is hazardous because of the increased risk for which of the following?

(A) Anaphylactoid reaction
(B) Phase II blockade
(C) Pseudocholinesterase deficiency
(D) Pulmonary aspiration
(E) Undiagnosed myopathy

ADVANCED Pharmacology & Pharmacokinetics Pediatric

A 60-kg 25-year-old woman is undergoing laparoscopy in the Trendelenburg position during general anesthesia. Five minutes after peritoneal inflation, the peak airway pressure required to deliver a tidal volume of 800 ml increases from 25 cmH2O to 60 cmH2O. SpO2 decreases from 100% to 80% and systolic blood pressure increases from 110 mmHg to 140 mmHg. Which of the following is the most likely cause?

(A) Acute tension pneumothorax
(B) Excessively steep Trendelenburg position
(C) Excessive ventilator tidal volume setting
(D) Kink in the endotracheal tube
(E) Massive carbon dioxide embolism

BASIC Respiratory & Critical Care

Which of the following is the most likely cause of the coronary steal phenomenon?

(A) Idiopathic hypertrophic subaortic stenosis (IHSS)
(B) Decreased cardiac contractility
(C) Dilation of coronary arterioles
(D) Dilation of epicardial coronary arteries
(E) Increased systemic vascular resistance

ADVANCED Cardiac

In an adult undergoing laparotomy, which of the following is the most effective means of maintaining body temperature during the first hour of anesthesia?

(A) Increasing ambient temperature
(B) Using a warming blanket
(C) Warming inspired gases
(D) Warming intravenous fluids
(E) Warming irrigating fluids

A previously healthy 28-year-old woman scheduled for laparoscopic tubal ligation becomes, agitated and refuses to undergo the procedure after being brought to the operating room. This behavior most likely resulted from preoperative administration of

(A) droperidol
(B) cimetidine
(C) atropine
(D) meperidine
(E) midazolam

ADVANCED Pharmacology & Pharmacokinetics General

If administered epidurally in equipotent doses, which of the following opioids will produce analgesia over the greatest number of dermatomes?

(A) Fentanyl
(B) Hydromorphone
(C) Meperidine
(D) Morphine
(E) Sufentanil

Each of the following is consistent with exposure to organophosphates EXCEPT

(A) bronchodilation
(B) muscle weakness
(C) salivation
(D) sweating
(E) urinary retention

ADVANCED Pharmacology & Pharmacokinetics

Compared with adults, neonates are more likely to become hypoxemic following anesthesia and extubation because of a relatively

(A) higher rate of oxygen consumption
(B) greater sensitivity to neuromuscular blockade
(C) larger Vd/Vt ratio
(D) lower blood pressure
(E) smaller functional residual capacity

ADVANCED Pediatric