Which drug class, with a negative inotropic effect, is prescribed ...

[tth]

Which drug class, with a negative inotropic effect, is prescribed for the treatment of heart failure?
 
  1. Diuretics
  2. Cardiac glycosides
  3. Beta-adrenergic blockers
  4. Phosphodiesterase inhibitors

Question 2

The nurse is instructing a group of students about the ability to increase the strength of a cardiac contraction. Which medical term is appropriate for the nurse to use when referring to this topic?
 
  1. Positive inotropic effect
  2. Negative chronotropiceffect
  3. Preload
  4. Afterload

[kristenb95]

Answer to Question 1

3

Rationale 1:Diuretics increase urine flow and lower blood volume. They do not have inotropic effects on the heart.
Rationale 2: Cardiac glycosides have a positive inotropic effect.
Rationale 3: Beta-adrenergic blockers have a negative inotropic effect.
Rationale 4:Phosphodiesterase inhibitors have a positive inotropic effect.

Global Rationale: Beta-adrenergic blockers have a negative inotropic effect. Cardiac glycosides and phosphodiesterase inhibitors have a positive inotropic effect. Diuretics increase urine flow and lower blood volume.

Answer to Question 2

1

Rationale 1: The ability to increase the strength of contraction is called a positive inotropic effect.
Rationale 2: Negative chronotropiceffect would be a reduction of the rate or number of the contractions.
Rationale 3: Preload is the degree to which the heart fibers are stretched just prior to contraction.
Rationale 4: Afterload is the pressure in the aorta that must be overcome for blood to be ejected from the left side of the heart.

Global Rationale: The ability to increase the strength of contraction is called a positive inotropic effect. Negative chronotropiceffect would be a reduction of the rate or number of contractions. Preload is the degree to which the heart fibers are stretched just prior to contraction. Afterload is the pressure in the aorta that must be overcome for blood to be ejected from the left side of the heart.

[tth]

Both answers were spot on, thank you once again

[kristenb95]

Great! Please up vote