Anesthesia Hub -

10 Random Questions

A patient who is receiving ventilatory support after coronary artery bypass grafting has a PaO2 of 132 mmHg, a PaCO2 of 19 mmHg, and a pH of 7.57. Which of the following is most likely to result from this level of hypocarbia?

(A) Decreased airway resistance
(B) Increased myocardial contractility
(C) Hyperkalemia
(D) Shortened QT interval
(E) Cerebral ischemia

ADVANCED Neuro Cardiac

Each of the following factors decreases uterine blood flow EXCEPT

(A) aortocaval compression
(B) hypocarbia
(C) hypoxia
(D) sympathetic block
(E) uterine contractions

ADVANCED OB

Compared with a patient without liver disease, a patient with cirrhosis will have

(A) greater accumulation of vecuronium with infusion
(B) increased unbound plasma vecuronium concentration
(C) more frequent occurrence of phase II block after succinylcholine administration
(D) prolonged elimination half-life of atracurium
(E) unchanged volume of distribution for pancuronium

BASIC Pharmacology & Pharmacokinetics

Which of the following statements concerning anesthesia machine flowmeters is true?

(A) At high gas flows, viscosity is the predominant determinant of flow rate
(B) At low flow rates, gas density is the predominant determinant of flow rate
(C) Flowmeters should be upstream from the oxygen fail-safe device
(D) The oxygen flowmeter should be upstream from other flowmeters
(E) Tapered flow tubes allow a constant decrease in pressure across the float

BASIC Equipment & Physics

Optimal positioning of a left-sided double-lumen endobronchial tube is easier than positioning of a right-sided endobronchial tube because the

(A) angle between the trachea and bronchus is wider on the left
(B) diameter of the left mainstem bronchus is larger
(C) diameter of the left upper lobe bronchus is larger
(D) distance between the left upper lobe bronchus and the carina is greater
(E) left mainstem bronchus is more rigid

Which of the following EEG findings is expected during maintenance anesthesia with high-dose fentanyl (50 ju-g/kg), nitrous oxide, and oxygen?

(A) Low-frequency high-voltage activity
(B) Nondominant hemispheric slowing
(C) Predominant alpha activity
(D) Prominent beta activity
(E) Spindle-shaped bursts

A 16-year-old patient who sustained trauma is being resuscitated. In deciding whether to infuse lactated Ringer's solution or albumin, which of the following is true?

(A) At one hour, both will remain in the intravascular compartment to an equal extent
(B) Both have zero risk for hepatitis transmission
(C) Both will decrease ionized calcium levels
(D) The glomerular filtration rate will be higher with infusion of albumin
(E) Lactated Ringer's solution causes a greater increase in intracranial pressure

Leakage current and microshock hazards are eliminated by

(A) an isolation transformer
(B) conductive flooring
(C) a three-wire grounding system
(D) a line-isolation monitor
(E) none of the above

BASIC Equipment & Physics

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

Forty-eight hours after thoracotomy, a patient's T6-7 epidural catheter is removed and the distal 2 cm is noted to be missing. The patient felt no pain during removal and neurologic examination shows no abnormalities. After informing the patient, which of the following is the most appropriate next step in management?

(A) Observation
(B) Culture of cerebrospinal fluid
(C) MRI of the thoracic spine
(D) Myelography
(E) Surgical removal of the catheter

ADVANCED Regional & Pain