Anesthesia Hub -

10 Random Questions

Surgery is cancelled 10 minutes after initiation of intravenous regional anesthesia with 50 ml of lidocaine 0.5%. To terminate anesthesia safely, what is the most appropriate timing for deflating the tourniquet?

(A) Immediately if benzodiazepines have been administered
(B) Immediately after intravenous administration of ephedrine 10 mg
(C) Immediately, followed by repeated reinflation and deflation
(D) In no less than 20 minutes after initial injection
(E) In no less than 45 minutes after initial injection

ADVANCED Regional & Pain

Which of the following phenomena is primarily responsible for the decrease in core body temperature that commonly occurs during the first hour of general anesthesia?

(A) Convective heat loss from cutaneous vasodilation
(B) Decreased heat production
(C) Evaporative heat loss during skin preparation
(D) Heat loss from the respiratory tract
(E) Redistribution of core body heat to the periphery

BASIC General

The laryngeal mask airway

(A) causes more hemodynamic stimulation than an oropharyngeal airway
(B) is contraindicated in patients with cervical spine instability
(C) is more easily inserted when cricoid pressure is applied
(D) may serve as a temporary airway in case of a failed rapid sequence intubation
(E) requires administration of a muscle relaxant to avoid laryngospasm during insertion

Which of the following statements concerning the management of diabetes mellitus during pregnancy is true?

(A) Insulin requirements remain essentially unchanged during pregnancy
(B) Maternal blood glucose concentration of 200 mg/dL is optimal
(C) Maternal hyperglycemia may cause neonatal acidosis
(D) Neonatal hyperglycemia is common
(E) Infants delivered under general anesthesia have lower Apgar scores than those delivered under spinal anesthesia

ADVANCED OB

The most beneficial effect of continuous positive airway pressure in a newborn with respiratory distress syndrome is

(A) increased functional residual capacity
(B) decreased airway resistance
(C) promotion of surfactant formation
(D) increased alveolar PO2
(E) maintenance of functional closure of the foramen ovale

ADVANCED Pediatric

Proper zeroing of an arterial pressure transducer attached to a supine anesthetized patient is best accomplished by

(A) continuous flow of fluid through the intravascular catheter
(B) opening the system to air at heart level
(C) placement of the transducer diaphragm at heart level
(D) proper damping of the transducer system
(E) zeroing the transducer during the expiration phase of mechanical ventilation

BASIC Equipment & Physics

Which of the following detects the smallest volume of venous air embolization?

(A) Changing the precordial Doppler ultrasound signal
(B) Decreasing PetC02
(C) Decreasing Sp02
(D) Increasing central venous pressure
(E) Increasing pulmonary artery pressure

ADVANCED Equipment & Physics Neuro

Which of the following changes in pulmonary function best explains the more rapid rate of rise of alveolar concentration of volatile anesthetics in pregnant women than in nonpregnant women?

(A) Decreased functional residual capacity
(B) Decreased dead space ventilation
(C) Increased cardiac output
(D) Increased oxygen consumption
(E) Increased pulmonary venous admixture

ADVANCED Respiratory & Critical Care OB

With acute carbon monoxide poisoning

(A) P50 is decreased
(B) Pa02 is decreased
(C) arterial oxygen saturation is increased
(D) oxygen-carrying capacity of blood is normal
(E) 2,3-diphosphoglycerate concentration in erythrocytes is increased

Compared with the adult airway, the neonatal airway has which of the following characteristics?

(A) More cephalad larynx
(B) Narrowest diameter at the vocal cords
(C) Relatively smaller epiglottis
(D) Smaller tongue relative to the size of the oral cavity
(E) Vocal cords perpendicular to the trachea

ADVANCED Pediatric