A nurse is reviewing a client’s cardiac rhythm strips and notes a constant P-R interval of 0.35 seconds.
Which of the following dysrhythmias is the client displaying?
Atrial fibrillation.
Complete heart block.
First-degree atrioventricular block.
Premature atrial complexes.
The Correct Answer is C
This is because the PR interval is longer than normal, which indicates a delay in the conduction of electrical impulses from the atria to the ventricles through the AV node. A normal PR interval is 0.12 to 0.2 seconds, or 3 to 5 small squares on the EKG strip. In this case, the PR interval is 0.35 seconds, which is more than 5 small squares.
Choice A is wrong because atrial fibrillation is a type of arrhythmia where the atria beat irregularly and rapidly, producing chaotic and variable P waves and an irregular ventricular response.
There is no constant PR interval in atrial fibrillation.
Choice B is wrong because complete heart block is a type of arrhythmia where there is no conduction of electrical impulses from the atria to the ventricles, resulting in independent and dissociated atrial and ventricular rhythms.
There are no consistent P waves or PR intervals in complete heart block.
Choice D is wrong because premature atrial complexes are extra beats that originate from the atria and interrupt the normal sinus rhythm.
They produce abnormal P waves that are different from the sinus P waves, and may have a shorter or longer PR interval depending on the timing of the impulse.
However, they do not cause a constant prolongation of the PR interval.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Determine the client’s knowledge about diaphragm use. This is the first action the nurse should take because it allows the nurse to assess the client’s readiness to learn, identify any knowledge gaps, and tailor the teaching to the client’s needs.
Some of the other choices are wrong because:
Choice A is wrong because Supervise return demonstration of diaphragm use.
This is not the first action the nurse should take because it assumes that the client already knows how to use the diaphragm correctly and safely. The nurse should first teach the client how to insert, remove, and care for the diaphragm before asking for a return demonstration.
Choice C is wrong because Document the client’s level of understanding about potential adverse effects.
This is not the first action the nurse should take because it is part of the evaluation phase of teaching, not the assessment phase. The nurse should first determine what the client knows and needs to know about diaphragm use and its possible risks and benefits.
Choice D is wrong because Teach the client how to insert the diaphragm.
This is not the first action the nurse should take because it is part of the implementation phase of teaching, not the assessment phase. The nurse should first assess the client’s knowledge, motivation, and preferences before providing instruction on how to use the diaphragm.
A contraceptive diaphragm is a birth control device that prevents sperm from entering the uterus.
It is a small, soft silicone or rubber cup with a flexible rim that covers the cervix.
It is inserted into the vagina with spermicide before sex and is held in place by the pelvic muscles. It is a reusable type of contraception that women can use to avoid getting pregnant.
Correct Answer is C
Explanation
This is the priority question for the nurse to ask the client because it assesses the client’s risk for suicide, which is a serious and potentially life-threatening complication of conduct disorder. The nurse should use a direct and nonjudgmental approach when asking about suicidal ideation and plan.
Choice A is wrong because it is not the most urgent question to ask the client.
While it is important to assess the client’s social relationships and possible peer rejection, this can be done after addressing the client’s safety and mental status.
Choice B is wrong because it is not relevant to the client’s current condition and might make the client feel defensive or stigmatized.
The nurse should avoid asking questions that imply blame or judgment and focus on the client’s strengths and coping skills.
Choice D is wrong because it is not appropriate for the nurse to ask the client in an emergency department setting.
This question might imply that the client is responsible for their conduct disorder, which is a complex and multifactorial mental health condition. The nurse should collaborate with the client and their family to develop a behavior management plan that involves positive reinforcement, limit setting, and consistent consequences.
Normal ranges: According to the DSM-5, conduct disorder is characterized by a persistent pattern of behavior that violates the rights of others or societal norms.
The symptoms of conduct disorder include aggression, deceitfulness, destruction of property, serious rule violations, and lack of remorse.
Conduct disorder can cause significant impairment in social, academic, or occupational functioning. The prevalence of conduct disorder is estimated to be 4% among children and adolescents.
The risk factors for conduct disorder include genetic factors, neurobiological factors, environmental factors, and psychological factors.
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