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
This is because cotton socks can help keep the feet dry and prevent infections. Wearing clean socks every day can also prevent blisters and injuries from friction.
Choice A is wrong because soaking feet twice daily can make the skin too soft and prone to injury. It can also wash away natural oils that protect the skin.
Choice C is wrong because rounding the edges of toenails when trimming can cause ingrown nails, which can lead to infection and pain. Toenails should be trimmed straight across and filed smoothly.
Choice D is wrong because using moisturizing lotion between the toes can create a moist environment that promotes fungal growth. Moisturizing lotion should be applied to the rest of the feet, but not between the toes.
Some other foot care guidelines for people with diabetes are:
• Inspect your feet daily and look for signs of injury, such as scrapes, cuts, blisters, etc.
• Wash your feet every day in warm water with mild soap.
Hot water and harsh soaps can damage your skin. Check the water temperature with your fingers or elbow before putting your feet in.
• Don’t walk barefoot.
Protect your feet from heat and cold. Wear appropriate-fitting shoes to avoid injury and blisters.
• See a doctor to remove corns or calluses (don’t do it yourself). Don’t use chemical wart removers, razor blades, corn plasters, or liquid corn or callus removers.
• Don’t sit with your legs crossed or stand in one position for long periods of time.
• See your doctor regularly for foot exams and report any problems or changes in your feet. References:
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.
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