The Patient Has a Permanent Pacemaker Inserted

question 42

Multiple Choice

The patient has a permanent pacemaker inserted.The provider has set the pacemaker to the demand mode at a rate of 60 beats per minute.The nurse realizes that

• A) the pacemaker will pace only if the patient's intrinsic heart rate is less than 60 beats per minute.
• B) the demand mode often competes with the patient's own rhythm.
• C) the demand mode places the patient at risk for the R-on-T phenomenon.
• D) the fixed-rate mode is safer and is the mode of choice.

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Definitions:

Codons

Sequences of three nucleotides in mRNA that specify the addition of a specific amino acid during protein synthesis, or signal the end of protein synthesis.

Cultural Processes

the dynamic mechanisms through which cultures are formed, maintained, and transformed over time, including adaptation, innovation, and communication.

Environmental Adaptation

The process by which organisms adjust to changes in their habitat or environment, often resulting in biological or behavioral changes.

Natural Selection

A fundamental mechanism of evolution, where organisms better adapted to their environment tend to survive and reproduce more successfully.