Anesthesia Hub -

10 Random Questions

During prolonged labor, a fetal scalp blood sample shows a PO2 of 21 mmHg, a PCO2 of 46 mmHg, and a pH of 7.35. These findings suggest

(A) fetal hypoxemia
(B) maternal hypoventilation
(C) sampling of venous blood
(D) miscalibration of the oxygen electrode
(E) no abnormality

ADVANCED Pediatric

Following maternal epidural injection, fetal exposure to chloroprocaine is lower than fetal exposure to bupivacaine for which of the following reasons?

(A) Chloroprocaine is metabolized by plasma cholinesterase
(B) Chloroprocaine is more protein bound
(C) Chloroprocaine is not readily absorbed from the epidural space
(D) The ionized fraction of chloroprocaine in the fetal circulation is smaller
(E) The pKa of chloroprocaine is less than that of bupivacaine

ADVANCED Pediatric OB

Which of the following complications is more likely to occur during cannulation of the left internal jugular vein than during cannulation of the right internal jugular vein?

(A) Injury to the thoracic duct
(B) Injury to the recurrent laryngeal nerve
(C) Injury to the phrenic nerve
(D) Perforation of the esophagus
(E) Pneumothorax

BASIC 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

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

A 35-year-old patient with asymmetric septal hypertrophy (IHSS) is undergoing bladder suspension with sevoflurane 1%, nitrous oxide 50%, and oxygen 50%. Immediately after skin incision, blood pressure decreases to 90/60 mmHg and junctional tachycardia of 150 bpm is noted on the ECG. Which of the following is the most appropriate management?

(A) Decreasing sevoflurane concentration
(B) Infusion of nitroglycerin
(C) Intravenous administration of a fluid bolus
(D) Intravenous administration of esmolol
(E) Intravenous administration of phenylephrine

ADVANCED Cardiac

Which of the following statements concerning the risk of acquiring hepatitis from a blood transfusion is true?

(A) Most patients with post-transfusion hepatitis become clinically jaundiced
(B) Most cases of post-transfusion hepatitis are caused by the hepatitis B virus
(C) The risk for hepatitis is less than the risk for AIDS
(D) The risk for post-transfusion hepatitis is less than 1% per unit transfused
(E) The incidence of post-transfusion hepatitis has remained unchanged over the past decade

BASIC Transfusions & Fluids

Which of the following is most likely to result in oxygen desaturation in a patient with Eisenmenger's syndrome who is scheduled for cesarean delivery?

(A) Breathing room air
(B) Epidural administration of lidocaine
(C) Intravenous administration of ketamine
(D) Intravenous administration of ephedrine
(E) Mild hypocarbia

ADVANCED OB Cardiac

Recommendations for maximal allowable trace anesthesia gases are based on

(A) achievable levels with modern scavenging systems
(B) data from animal studies
(C) data on methionine synthetase levels in anesthesiologists
(D) evidence for an association with malignancy in anesthesiologists
(E) evidence for an association with spontaneous abortion In operating room personnel

BASIC Equipment & Physics

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