Anesthesia Hub -

10 Random Questions

To eliminate all pain during the second stage of labor, a lumbar epidural block must extend from

(A) T6 to LI
(B) T10 to LI
(C) T10 to SI
(D) T10 to S4
(E) LI to S5

During frontal craniotomy for removal of an astrocytoma, the surgeon notes that the brain is "tight." The patient is receiving nitrous oxide 50% in oxygen, isoflurane 0.5%, fentanyl, and pancuronium. Heart rate is 92 bpm, blood pressure is 110/60 mmHg, end-tidal carbon dioxide tension is 31 mmHg, and oxygen saturation is 98%. The most appropriate initial treatment is to

(A) administer a beta-adrenergic blocker
(B) administer thiopental
(C) decrease isoflurane concentration
(D) decrease mean arterial pressure to 60 mmHg
(E) increase alveolar ventilation

The condition LEAST likely to be associated with sustained pain relief following a nerve block is

(A) causalgia
(B) myofascial pain
(C) diabetic neuropathy
(D) acute herpes zoster
(E) reflex sympathetic dystrophy

ADVANCED Regional & Pain

A woman has weakness of the right quadriceps and a decreased knee jerk reflex on the right one day after forceps delivery under epidural anesthesia. The most likely cause is

(A) epidural hematoma
(B) intrapelvic nerve trauma
(C) lithotomy positioning
(D) reaction to the preservative in the anesthetic solution
(E) trauma from the epidural needle

ADVANCED OB Regional & Pain

Which of the following statements concerning carbon monoxide poisoning is true?

(A) Diagnosis is excluded if the PaO2 is greater than 300 mmHg while breathing 100% oxygen
(B) Increased inspired oxygen concentration accelerates displacement of carbon monoxide from hemoglobin
(C) Methylene blue decreases binding of carbon monoxide to hemoglobin
(D) Pulse oximetry accurately reflects hemoglobin oxygen saturation
(E) Tissue oxygen delivery is normal

ADVANCED Respiratory & Critical Care General

A patient receiving mechanical ventilation with oxygen 60% postoperatively has a PaO2 of 160 mmHg and a PaCO2 of 38 mmHg. One hour later, with mechanical ventilation unchanged, the PaO2 is 150 mmHg and PaCO2 is 48 mmHg. The most likely cause of these changes is

(A) metabolic acidosis
(B) pulmonary embolism
(C) increased body temperature
(D) interstitial pulmonary edema
(E) aspiration pneumonia

BASIC Respiratory & Critical Care General

Which of the following drugs increases cerebral blood flow while decreasing cerebral metabolic rate?

(A) Etomidate
(B) Fentanyl
(C) Isoflurane
(D) Lidocaine
(E) Midazolam

BASIC Pharmacology & Pharmacokinetics Neuro

When used with morphine for premedication, which of the following drugs is most likely to cause sedation?

(A) Atropine
(B) Cephalothin
(C) Clonidine
(D) Metoclopramide
(E) Ranitidine

BASIC Pharmacology & Pharmacokinetics

Which of the following must be considered during perioperative management of a patient on long-term lithium therapy?

(A) Intravenous fluids should include sodium
(B) Therapy should be discontinued for 14 days prior to anesthesia
(C) The requirement for succinylcholine is increased
(D) The requirement for volatile anesthetics is increased
(E) Urine output should be maintained with furosemide

BASIC Pharmacology & Pharmacokinetics General

Immediately after a retrobulbar block for cataract surgery, the eye grossly protrudes and the patient has the sensation of pressure in the eye. The most appropriate initial intervention is

(A) hyperventilation
(B) surgical drainage of a hematoma
(C) manual compression of the globe
(D) administration of atropine intravenously
(E) administration of mannitol intravenously

ADVANCED Regional & Pain