A Patient Who Has Been Diagnosed with Heart Failure for Over

question 3

Multiple Choice

A patient who has been diagnosed with heart failure for over a year reports being comfortable while at rest but experiences palpitations and dyspnea when walking to the bathroom. Which classification of heart failure is appropriate based on these symptoms?

• A) Class I
• B) Class II
• C) Class III
• D) Class IV

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Definitions:

Neurotransmitters

Chemical messengers that transmit signals across a chemical synapse, from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell.

Synaptic Vesicle

A small, spherical packet located within presynaptic terminals of neurons that stores neurotransmitters, which are released into the synaptic cleft during neurotransmission.

Synaptic Cleft

The narrow gap between the presynaptic neuron and postsynaptic cell where neurotransmitters are released to facilitate neuronal communication.

Norepinephrine

A neurotransmitter and hormone involved in the body's natural response to stress, increasing heart rate, blood pressure, and blood sugar levels.