A Client Is Constipated and Trying to Have a Bowel

question 30

Multiple Choice

A client is constipated and trying to have a bowel movement. How does holding the breath and pushing down (the Valsalva maneuver) affect the pulse?

• A) Left ventricle pumps more forcefully; pulse is stronger
• B) Stimulates the vagus nerve to increase the rate
• C) Stimulates the vagus nerve to decrease the rate
• D) Right ventricle is less efficient; pulse is thready

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Definitions:

Termination

The process of ending something, such as the conclusion of a biological process or the halting of a chemical reaction.

Inducible Operon

An operon that is normally inactive because a repressor molecule is attached to its operator; transcription is activated when an inducer binds to the repressor, making it incapable of binding to the operator. Compare with repressible operon.

Inducer Molecule

A substance that initiates the expression of genes by interacting with a repressor or an activator.

Active Repressor

A molecular form of a repressor protein that can bind to specific regions of DNA and inhibit gene transcription.