What controls the firing of the sinus node to trigger the start of the cardiac cycle?
The autonomic nervous system.
The ganglionic nervous system.
The central nervous system.
The somatic nervous system.
The Correct Answer is A
The autonomic nervous system controls the firing of the sinus node (sinoatrial node) by regulating heart rate and rhythm. It adjusts the rate at which the sinus node generates electrical impulses, influencing the start and pace of the cardiac cycle.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D"]
Explanation
Choice A reason:
“Do you feel your life is empty?” is a relevant question on the geriatric depression scale. Feelings of emptiness can indicate depression, especially in older adults who may experience significant life changes and losses.
Choice B reason:
“Are you on a low cholesterol diet?” is not a relevant question for assessing depression. This question pertains to dietary habits and cardiovascular health rather than mental health.
Choice C reason:
“Have you dropped your activities or interests?” is a pertinent question on the geriatric depression scale. A loss of interest in activities that were once enjoyable is a common symptom of depression.
Choice D reason:
“Do you feel happy most of the time?” is a relevant question on the geriatric depression scale. Assessing overall happiness helps identify depressive symptoms, as individuals with depression often report feeling unhappy or sad most of the time.
Correct Answer is ["B","C","D"]
Explanation
Choice A reason:
Canceling Netflix by Internet service is not relevant to Mr. Jones’ discharge planning. While managing finances and subscriptions may be part of overall life management, it does not address the immediate safety and mental health needs of Mr. Jones.
Choice B reason:
Releasing information signed for family to secure Mr. Jones’ loaded gun or having the police secure the gun if needed prior to discharge is crucial for ensuring his safety. Removing access to firearms reduces the risk of self-harm and is an important step in discharge planning for someone with suicidal ideation.
Choice C reason:
Obtaining a psychiatric provider follow-up appointment as soon as possible and evaluating for PHP (Partial Hospitalization Program) or residential treatment with the treatment team is essential. Continuity of care and appropriate follow-up are critical for managing Mr. Jones’ depression and preventing relapse.
Choice D reason:
Assisting in developing a safety plan prior to discharge that is written with phone numbers and interventions is vital. A safety plan provides Mr. Jones with clear steps to take if he feels at risk of harming himself, including contact information for crisis services and supportive individuals.
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