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Author Question: What effects can be expected from parasympathetic stimulation of the heart? What will be an ideal ... (Read 95 times)

V@ndy87

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on: Jun 25, 2018
What effects can be expected from parasympathetic stimulation of the heart?
 
  What will be an ideal response?

Question 2

The QRS complex associated with a third-degree AV block is always wide.
 
  Indicate whether the statement is true or false


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IRincones

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Reply #1 on: Jun 25, 2018
Answer to Question 1

Parasympathetic stimulation has the following actions: it slows the rate of discharge of the SA node, slows conduction through the AV node, decreases the strength of atrial contraction, and can cause a small decrease in the force of ventricular contraction.

Answer to Question 2

F
The site of block in a third-degree AV block may be the AV node or, more commonly, the bundle of His or the bundle branches. A secondary pacemaker (either junctional or ventricular) stimulates the ventricles; therefore the QRS may be narrow or wide, depending on the location of the escape pacemaker and the condition of the intraventricular conduction system.


V@ndy87

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Reply 2 on: Jun 25, 2018
Wow, this really help

dawsa925

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Reply 3 on: Yesterday
Excellent

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