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
- . Answer and explanation.
The correct answer is choice C, first-degree atrioventricular block.
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
A hematoma is a collection of blood outside a blood vessel that can cause swelling, pain, and bruising. It can indicate bleeding from the artery where the catheter was inserted, which can be a serious complication of cardiac catheterization.
The nurse should notify the provider immediately if a hematoma is observed.
Choice A is wrong because heart rate 90/min is within the normal range for adults and does not indicate a complication.
Choice C is wrong because bounding pulses in the affected extremity are expected after cardiac catheterization, as they indicate good blood flow to the area.
Choice D is wrong because report of discomfort at the insertion site is common and usually mild after cardiac catheterization.
The nurse can provide pain relief as needed, but does not need to notify the provider unless the pain is severe or persistent.
Normal ranges for heart rate are 60-100 beats per minute for adults. Normal ranges for blood pressure are 120/80 mmHg or lower for systolic pressure and 80 mmHg or lower for diastolic pressure. Normal ranges for oxygen saturation are 95-100% for adults.
Correct Answer is ["C","F"]
Explanation
Answer is… C and F indicate improvement.
A The client has gained 1.8 kg (4 lb). BMI is 18.9. This is not an improvement because the client’s BMI is still below the normal range of 18.5 to 24.9 The client may have malnutrition or other health problems that affect their weight.
B The clients adult child prepares two meals per day for the client. This is not an improvement because it shows that the client still depends on others for their basic needs and may have difficulty with self-care.
C The clients clothing is clean and appropriate for the weather. This is an improvement because it shows that the client has good hygiene and can dress themselves appropriately.
D The client receives three baths per week from a home care aide. This is not an improvement because it shows that the client still needs assistance with bathing and may have limited mobility or pain.
E The client reports frequent toothaches and lack of dental care. This is not an improvement because it shows that the client has poor oral health and may have infections or other complications.
F The client makes eye contact and smiles when speaking. This is an improvement because it shows that the client has positive mood and social interaction.
: https://www.hopkinsmedicine.org/health/conditions-and-diseases/distal-radius-fracture- wrist-fracture : https://www.nhlbi.nih.gov/health/educational/lose_wt/BMI/bmicalc.htm.
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