Dysrhythmias Exam Questions With Verified
Answers
A nurse is observing the client's rhythm strip on the cardiorespiratory monitor when the P wave
suddenly disappears. The nurse interprets this to mean that:
a. The atria are not contracting.
b. The ventricle is no longer contracting.
c. Only t...
EXAM STUDY MATERIALS July 23, 2024 4:26 PM Dysrhythmias Exam Questions With Verified Answers A nurse is observing the client's rhythm strip on the cardiorespiratory monitor when the P wave suddenly disappears. The nurse interprets thi s to mean that: a. The atria are not contracting. b. The ventricle is no longer contracting. c. Only the left ventricle is contracting. d. The client's heart is no longer ejecting blood. - answer✔✔a. the atria are not contracting The P wave is an indication of atrial contraction and absence of this wave would mean that the atria either are not contracting or are fibrillating and the fibrillation wave is so small as to not be seen on that particular lead. The QRS reflects ventricula r contraction, which ejects blood to the body. The provider has told the client that the amount of stress must be reduced because it is having a negative effect on the client's heart. When the provider leaves the room, the client asks the nurse why stress would affect the heart. The nurse best responds by explaining: a. "Doctors always think problems are caused by stress." b. "Stress causes a release of chemicals that cause blood vessels to narrow and the heart rate to increase." c. "Stress lowers blood s ugar, which puts you at increased risk of heart disease." d. "Stress causes the release of chemicals that destroy the kidneys." - answer✔✔b. releases chemicals When the body is exposed to stress, the adrenal glands secrete epinephrine and norepinephrine. These hormones cause vasoconstriction and increase the work of the heart, making the risk of heart disease greater. Doctors do not typically think that problems are caused by stress. Stress increases blood sugar eventually. Chemicals released in stress do not cause kidney destruction. EXAM STUDY MATERIALS July 23, 2024 4:26 PM The nurse is caring for a client whose heart rate suddenly becomes irregular. When notifying the physician, the nurse anticipates an order for what diagnostic study? a. Thallium stress test b. Electrocardiogram c. Echocardio gram d. Cardiac catheterization - answer✔✔b. ECG An electrocardiogram records electrical activity of the heart and would be the diagnostic tool of choice to determine why the client's heart rate is irregular. Echocardiograms demonstrate the internal struc ture of the heart. The thallium stress test measures areas of ischemia in the heart. Cardiac catheterization is the insertion of a catheter into the chambers of the heart and allows for visualization of the coronary arteries and measurement of pressures wi thin the chambers of the heart. The nurse is discharging a client to home with a new diagnosis of atrial fibrillation. The nurse explains that which of the following is the most important symptom to report to the physician? a. Irregular pulse b. Fever c. Hemoptysis d. Fatigue - answer✔✔c. hemoptysis Chest pain and hemoptysis are classic symptoms of pulmonary embolism, a serious complication of atrial fibrillation. Irregular pulse is expected with atrial fibrillation. Fatigue may also be an expected outcome for some individuals with atrial fibrillation . Fever is not associated with atrial fibrillation. The nurse recognizes second -degree AV block, type 11 (Mobitz 11), and intervenes appropriately by: a. Preparing for temporary pacemaker insertion. b. Administering a class 1B antidysrhythmic drug. c. Placing the client in Fowler's position.
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