Anesthesia Hub -

10 Random Questions

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

Each of the following increases arterial to end-tidal carbon dioxide tension difference EXCEPT

(A) addition of positive-end expiratory pressure
(B) deliberate hypotension
(C) endobronchial intubation
(D) hypovolemia
(E) pulmonary embolism

BASIC Respiratory & Critical Care

Which of the following is true of both the neonatal and adult airways?

(A) Epiglottic innervation is primarily vagal
(B) Sniffing position requires placement of a pillow under the occiput
(C) The cricoid ring is the narrowest part of the airway
(D) The epiglottis has a relatively similar size and shape
(E) The glottis is located at C3-4

ADVANCED Pediatric

During isoflurane anesthesia, a 45-year-old patient with chronic asthma has wheezing, prolonged expiration, sinus tachycardia of 120 bpm, and premature ventricular contractions. Preoperative medication included cromolyn and theophylline (serum level 20 jag/ml). The most appropriate treatment is to administer

(A) albuterol aerosol
(B) aminophylline by intravenous infusion
(C) cromolyn aerosol
(D) halothane
(E) hydrocortisone by intravenous bolus

A patient with chronic paraplegia (T4 level) is undergoing cystoscopy and removal of bladder calculi without anesthesia. After 10 minutes, blood pressure is 240/100 mmHg and pulse is 50 bpm. The most appropriate management is administration of

(A) spinal anesthesia
(B) inhalational anesthesia
(C) thiopental intravenously
(D) methyldopa intravenously
(E) nitroprusside intravenously

ADVANCED General

When evaluating a screening test, which of the following is the most appropriate term for the proportion of patients with a disease who have a positive test result?

(A) Accuracy
(B) Incidence
(C) Selectivity
(D) Sensitivity
(E) Specificity

BASIC General

Nitroprusside therapy for hypertension should be discontinued in the presence of

(A) acute myocardial infarction
(B) increasing metabolic acidosis
(C) methemoglobinemia
(D) mitral regurgitation
(E) renal failure

ADVANCED General Cardiac

In patients with blunt head trauma, cerebral perfusion pressure is determined by the gradient between

(A) diastolic pressure and central venous pressure
(B) intracranial pressure and central venous pressure
(C) mean arterial pressure and central venous pressure
(D) mean arterial pressure and intracranial pressure
(E) systolic pressure and intracranial pressure

BASIC Neuro

Which of the following is the most important function of temperature compensation in anesthetic vaporizers?

(A) Compensation for changes in the specific heat of the anesthetic during vaporization
(B) Delivery of diluent gas at a constant temperature regardless of flow rate
(C) Increase of bypass flow when the vaporizer is cooled by high fresh gas flow
(D) Maintenance of constant anesthetic vapor output over a range of vaporizer temperatures
(E) Maintenance of constant vapor concentrations at low flow rates

BASIC Equipment & Physics

Neostigmine administered intravenously without atropine can produce each of the following EXCEPT

(A) arousal
(B) bradycardia
(C) bronchoconstriction
(D) increased gastric motility
(E) increased urinary bladder tone

BASIC Pharmacology & Pharmacokinetics