A nurse is analyzing a client's electrocardiogram (ECG) strip and identifies the following information: Heart rate: 92/min Rhythm: Irregular P wave:
Unable to identify PR interval:
Unable to measure QRS duration:
0.10 seconds Based upon this information,
thenurse should interpret the client's rhythm as indicating which of the following?
Supraventricular tachycardia
Atrial fibrillation
Sinus bradycardia
First-degree heart block
The Correct Answer is B
A. Supraventricular tachycardia (SVT) typically has identifiable P waves; the absence of P waves suggests a different condition.
B. Atrial fibrillation is characterized by an irregular rhythm, inability to identify P waves, and varying intervals. This interpretation aligns with the client's ECG findings.
C. Sinus bradycardia would show identifiable P waves and a regular rhythm with a heart rate less than 60 bpm, which does not match the provided information.
D. First-degree heart block would also show identifiable P waves and regularity in the rhythm with a prolonged PR interval, which is not indicated here.
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Correct Answer is ["A","B","E"]
Explanation
A. Increased risk-taking behaviors are common as adolescents may feel invulnerable and engage in dangerous activities without considering the consequences.
B. Greater incidence of accidental injuries is often a result of risk-taking behaviors, which can be influenced by feelings of invulnerability.
C. Reduced mental health issues is incorrect as feelings of invulnerability can lead to increased stress and anxiety, negatively impacting mental health.
D. Improved social relationships are not guaranteed; feelings of invulnerability may actually lead to conflict or isolation if risk-taking behaviors are harmful.
E. Higher likelihood of substance abuse can result from a belief in invulnerability, leading adolescents to underestimate the risks associated with drug and alcohol use.
F. Enhanced academic performance is not directly linked to feelings of invulnerability and may suffer due to distractions from risky behaviors.
Correct Answer is ["C","D"]
Explanation
A. Object permanence is a cognitive ability typically developed during the sensorimotor stage (0-2 years), not during the concrete operational stage (7-11 years).
B. Egocentric thinking is characteristic of the preoperational stage (2-7 years) and decreases as children enter the concrete operational stage.
C. The ability to perform logical operations on concrete objects is a hallmark of the concrete operational stage, where children can think logically about physical objects and events.
D. Understanding the concept of conservation, which refers to recognizing that quantity does not change despite changes in shape or arrangement, is a key characteristic of the concrete operational stage.
E. Use of symbolic play is more characteristic of the preoperational stage, where children engage in imaginative play rather than concrete operations.