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Home Q & A Board Biology-Related Homework Help Medicine
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buttsuni buttsuni
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6 years ago
For which of the following arrhythmias is an electronic pacemaker indicated?
 
  a. Third-degree heart block
  b. Sinus tachycardia
  c. First-degree heart block
  d. Ventricular fibrillation


Q. 2  What is the point in the respiratory track where inspired gas reaches body temperature, ambient pressure, saturated (BTPS) conditions?
 
  a. Point of thermal equilibrium
  b. Hygroscopic saturation boundary
  c. Thermal inversion boundary
  d. Isothermic saturation boundary


Q. 3  What is the initial energy level for a biphasic defibrillation of an adult patient?
 
  a. 120 to 200 J
  b. 200 to 300 J
  c. 300 to 360 J
  d. 400 J


Q. 4  During ACLS for a 4-year-old child in ventricular fibrillation, a shockable rhythm persists after five cycles of CPR. At this time, what would you recommend?
 
  a. Switch to synchronous countershock (car-dioversion).
  b. Apply one shock (4 J/kg) and resume compressions immediately.
  c. Immediately deliver three to five precor-dial thumps.
  d. Get larger paddles and apply more elec-trolyte gel.
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#1
6 years ago
(Answer to Q. 1)  ANS: A
Pacemaker therapy is used to treat sinus bradycardias that produce serious signs and symptoms and that do not respond to atropine (Figure 37-27). Electrical pacing also is used to manage sec-ond-degree type II and third-degree heart block.

(Answer to Q. 2)  ANS: D
As inspired gas moves into the lungs, it achieves BTPS conditions (body temperature, 37 C; barometric pressure; saturated with water vapor 100 relative humidity at 37 C). This point, normally approximately 5 cm below the carina, is called the isothermic saturation boundary.

(Answer to Q. 3)  ANS: A
Currently, the American Heart Association recommends an initial energy level, if a biphasic de-fibrillator is available, of 120 to 200 J for defibrillation of adults and 2 to 4 J/kg for children and infants.

(Answer to Q. 4)  ANS: B
For children older than 1 year, if a shockable rhythm persists after five cycles of CPR, the rescuer should give one shock (4 J/kg) and resume compressions immediately.
buttsuni Author
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#2
6 years ago
Brilliant
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