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Week 10 CON
Week 10 Atrial Dysrhythmias 246
Question | Answer |
---|---|
Ectopic signal | starts in the left or right atrium and travels across the atria by an abnormal pathway. |
Causes of PAC in the healthy heart: | Emotional stress - Physical fatigue - Caffeine, tobacco, alcohol use |
Medical conditions that are associated with PAC: | Hypoxia - Electrolyte imbalances - Disease states (hyperthyroidism, chronic obstructive pulmonary disease [COPD], and heart disease, including CAD and valvular disease) |
Atrial flutter | is an atrial tachydysrhythmia identified by recurring, regular, sawtooth-shaped flutter waves that originate from a single ectopic focus in the right atrium or, less commonly, the left atrium. |
Causes of Atrial flutter in the normal heart: | Atrial flutter rarely occurs in a healthy heart. May be associated with use of drugs such as digoxin, quinidine, and epinephrine |
Medical conditions that cause atrial flutter: | Coronary artery disease - Hypertension - Mitral valve disorders - Pulmonary embolus - Chronic lung disease - Cor pulmonale - Cardiomyopathy - Hyperthyroidism - |
A patient who is otherwise healthy is experiencing premature atrial contractions (PACs). The patient asks what could be causing the PACs. Which is the best response by the nurse? | “Your coffee and cigarette use.” |
Which statement describes a patient who has an ECG reading with a ventricular rate of 120 and loss of the atrial kick? | The patient experiences a decrease in cardiac output because of ineffective atrial contractions. |
A patient is diagnosed with atrial fibrillation. Which ECG findings does the nurse expect? | Atrial rate of 580 bpm/variable and irregular ventricular rate |
The nurse is caring for a patient with shortness of breath, dizziness, and chest pressure. The nurse notes a thready, irregular pulse, and an ECG that indicates atrial fibrillation. Which action would the nurse take first? | Administer a dose of warfarin |
Which nursing intervention is a priority for Ms. Keim? | Recommend less coffee and stress relief |
Ms. Keim reports increasing dyspnea, nausea and chest pressure. The nurse notes a thready, irregular radial pulse and diaphoresis. Which nursing action is a priority? | Repeat ECG |
Match the type of atrial dysrhythmia with its ECG characteristics. | Atrial flutter - Premature atrial contraction - Atrial fibrillation |
The nurse is working with a patient who has a atrial rate of 500 beats per minute (bpm). The nurse expects which characteristic ECG abnormality? | Fibrillatory P wave |
A patient reports feeling palpitations and chest heaviness after several days of gastroenteritis. The nurse notes a serum potassium level of 3.1, and the The nurse expects the health care provider to order which medication class for this patient? | Calcium channel blocker |
A patient with a history of chronic obstructive pulmonary disease (COPD) presents with chest pain and signs of atrial flutter. The patient’s vital signs are blood pressure 65/40, temperature 99.0 °F, heart rate 135 beats per minute, and | - Administer warfarin according to orders - Prepare the patient for an electrical cardioversion - Administer a dose of IV narcotic pain medication |
patient with a history of hypertension presents with chest tightness and discomfort, dyspnea, and dizziness. The ECG is shown. Which process is the primary goal when treating this patient? | Increase AV block |
Why might a patient with atrial flutter be prescribed warfarin? | To decrease stroke risk |