Anesthesia Hub -

10 Random Questions

A 65-kg man is scheduled for wrist surgery with intravenous regional anesthesia with 0.5% lidocaine 50 ml. Which of the following statements is true?

(A) This anesthetic is contraindicated if the patient has sickle cell disease
(B) Mottling of the skin after injection dictates abandonment of the technique
(C) Tourniquet discomfort is an indication to inject more local anesthetic
(D) Bupivacaine 0.5% could be substituted to prolong anesthesia
(E) Epinephrine (1:400,000) should be added to prolong anesthesia

ADVANCED Regional & Pain

Compared with epidural administration of hydrophilic opioids, epidural administration of lipophilic opioids is associated with

(A) earlier onset of pruritus
(B) greater motor block when combined with local anesthetics
(C) higher incidence of delayed respiratory depression
(D) lesser sensitivity to reversal of analgesia by naloxone
(E) slower onset of analgesia

ADVANCED Pharmacology & Pharmacokinetics Regional & Pain

A patient undergoes axillary block for placement of an arteriovenous shunt in the forearm. Blockade of the musculocutaneous nerve is not achieved. Injection of a local anesthetic at which of the following sites will provide the required sensory block?

(A) Between the tendon of the palmaris longus and flexor carpi radialis
(B) Body of coracpbrachialis muscle
(C) Medial to the brachial artery at the elbow
(D) Proximal to the medial epicondyle against the medial surface of the humerus
(E) Superficial to the pulse of the axillary artery

ADVANCED Regional & Pain

Which of the following statements concerning anesthetic management for MRIs is true?

(A) ECG wires are associated with patient burns
(B) Mechanical ventilation of the lungs is not feasible
(C) Monitors with ferromagnetic components may be used
(D) Oxygen analysis of inspired gas is inaccurate
(E) Pulse oximetry is not reliable near the MR scanner

Which of the following is most likely in a 30-year-old patient with untreated hypothyroidism?

(A) Cardiac arrhythmias with ketamine administration
(B) Decreased ventilatory response to hypoxia
(C) Hypoglycemia
(D) Increased MAC of inhalational anesthetics
(E) Peripheral vasodilatation

ADVANCED General

A 5-month-old infant with tetralogy of Fallot is scheduled for elective inguinal herniorrhaphy. Which of the following would require the operation to be postponed?

(A) Current propranolol therapy
(B) Hematocrit of 65%
(C) History of "tet spells"
(D) Patent ductus arteriosus
(E) Room air oxygen saturation of 82%

ADVANCED Pediatric Cardiac

Which of the following situations is most likely related to paraplegia following repair of a descending thoracic aortic aneurysm?

(A) Decreased cerebrospinal fluid pressure
(B) Epidural hematoma
(C) Hypertension proximal to the aortic cross clamp
(D) Improper placement of surgical retractors
(E) Prolonged aortic cross-clamp time

ADVANCED General

A 2.8-kg 8-hour-old infant undergoes laparotomy for a ruptured omphalocele. Following primary closure of the abdominal wall, arterial blood gases are PaO2 40 mmHg (FiO2 0.6), PaCO2 55 mmHg, and pH 7.1. Blood pressure is 30/20 mmHg. After increasing the FiO2, the most appropriate action would be to

(A) obtain a radiograph of the chest immediately
(B) withdraw the endotracheal tube 1 cm
(C) assess the patient for coexisting congenital heart disease
(D) administer lactated Ringer's solution 15 ml/kg
(E) ask the surgeon to reopen the wound

ADVANCED Pediatric

Which of the following statements about patient-controlled analgesia using opioids is true?

(A) It is not associated with respiratory depression
(B) It obviates loading doses
(C) It requires a background opioid infusion to be effective
(D) It requires intravenous administration to be effective
(E) It requires less drug than intramuscular dosing for similar analgesia

ADVANCED Regional & Pain

Succinylcholine can be administered safely to a patient with

(A) amyotrophic lateral sclerosis
(B) cerebral palsy
(C) a pelvic crush injury sustained two weeks ago
(D) a 20% body surface area burn sustained 10 days ago
(E) hemiparesis one month after a cerebrovascular accident

ADVANCED Pharmacology & Pharmacokinetics