Anesthesia Hub -

10 Random Questions

When performed with identical doses, which of the following types of regional block is associated with the highest plasma concentration of the drug?

(A) Brachial plexus
(B) Caudal
(C) Intercostal
(D) Subcutaneous infiltration
(E) Thoracic epidural

ADVANCED Regional & Pain

A 55-year-old patient with hypertrophic cardiomyopathy (IHSS) is undergoing bladder suspension with enflurane 1%, nitrous oxide 50%, and oxygen 50%. Junctional tachycardia and hypotension develop suddenly immediately after skin incision. The most appropriate management is to

(A) decrease enflurane concentration
(B) administer an intravenous fluid bolus
(C) administer intravenous esmolol
(D) administer intravenous phenylephrine
(E) begin nitroglycerin infusion

A 35-year-old woman with a grade III subarachnoid hemorrhage is undergoing clipping of a middle cerebral artery aneurysm 48 hours after initial hemorrhage. Which of the following drugs used to induce hypotension is LEAST likely to affect intracranial pressure?

(A) Esmolol
(B) Hydralazine
(C) Isoflurane
(D) Nitroglycerin
(E) Sodium nitroprusside

ADVANCED Pharmacology & Pharmacokinetics Neuro

Which of the following drugs has the shortest elimination half-life?

(A) Diazepam
(B) Flumazenil
(C) Flumazepam
(D) Lorazepam
(E) Midazolam

BASIC Pharmacology & Pharmacokinetics

Which of the following produces falsely high Sp02?

(A) Carboxyhemoglobin
(B) Fetal hemoglobin
(C) Hematocrit less than 20%
(D) Indigo carmine
(E) Methylene blue

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 statements concerning brain stem auditory evoked responses is true?

(A) They monitor cortical function
(B) They are not affected by changes in carbon dioxide tension
(C) They are not affected by mild hypothermia (34°C)
(D) They are more resistant to anesthetic effects than somatosensory evoked responses
(E) They are abolished coincident with flattening of the EEG

ADVANCED Neuro

The most sensitive means of detecting venous air embolism is

(A) precordial Doppler stethoscope
(B) transesophageal echocardiography
(C) end-tidal carbon dioxide measurement
(D) pulmonary artery pressure measurement
(E) central venous pressure measurement

ADVANCED Equipment & Physics Neuro

At the end of an anesthetic in which a nondepolarizing muscle relaxant was administered, the least number of receptors are blocked

(A) after administration of neostigmine 5 mg and glycopyrrolate 1 mg
(B) if the tetanus is sustained at 30 Hz
(C) if the patient can sustain head lift for 5 sec
(D) when the ratio of twitch height T1:T4 is 0.8
(E) when tidal volume is normal

BASIC Pharmacology & Pharmacokinetics

An anesthetized, paralyzed patient is placed in the lateral position and mechanically ventilated. End-tidal PCO2 is 34 mmHg and PaCO2 is 43 mmHg. This gradient

(A) increases during spontaneous breathing
(B) indicates increased dead space ventilation
(C) is caused by increased intrapulmonary shunt
(D) reflects inhibition of hypoxic pulmonary vasoconstriction
(E) results from increased cardiac output

BASIC Respiratory & Critical Care