PREUP Review/ Med Surg 1 (Jersey College) Chapter 27 Management of Patients w/ Coronary Vascular Disease
The nurse is caring for a client presenting to the emergency department (ED) reporting chest pain. Which electrocardiographic (ECG) finding would be most concerning to the nurse?
ST elevation Rationale: The first signs of an acute MI are usually seen in the T wave and the ST segment. The T wave becomes inverted; the ST segment elevates (it is usually flat). An elevated ST segment in two contiguous leads is a key diagnostic indicator for MI (i.e., ST-elevation MI). This client requires immediate invasive therapy or fibrinolytic medications. Although the other ECG findings require intervention, elevated ST elevations require immediate and definitive interventions.
The nurse knows that women and the elderly are at greater risk for a fatal myocardial event. Which factor is the primary contributor of this cause?
Vague symptoms Rationale: Often, women and elderly do not have the typical chest pain associated with a myocardial infarction. Some report vague symptoms (fatigue, abdominal pain), which can lead to misdiagnosis. Some older adults may experience little or no chest pain. Gender is not a contributing factor for fatal occurrence but rather a result of symptoms association.
To be effective, percutaneous transluminal coronary angioplasty (PTCA) must be performed within what time frame, beginning with arrival at the emergency department after diagnosis of myocardial infarction (MI)?
60 minutes Rationale: The 60-minute interval is known as "door-to-balloon time" in which a PTCA can be performed on a client with a diagnosed MI. The 30-minute interval is known as "door-to-needle time" for the administration of thrombolytics after MI. The time frame of 9 days refers to the time until the onset of vasculitis after administration of streptokinase for thrombolysis in a client with an acute MI. The 6- to 12-month time frame refers to the time period during which streptokinase will not be used again in the same client for acute MI.
A client in the emergency department reports squeezing substernal pain that radiates to the left shoulder and jaw. The client also complains of nausea, diaphoresis, and shortness of breath. What is the nurse's priority action?
Administer oxygen, attach a cardiac monitor, take vital signs, and administer sublingual nitroglycerin.
An older adult is postoperative day one, following a coronary artery bypass graft (CABG). The client's family members express concern to the nurse that the client is uncharacteristically confused. After reporting this change in status to the health care provider, what additional action should the nurse take?
Assess for factors that may be causing the client's delirium. Rationale: Uncharacteristic changes in cognition following cardiac surgery are suggestive of delirium. Dementia has a gradual onset with organic brain changes and is not an acute response to surgery. Assessment is a higher priority than reorientation, which may or may not be beneficial. Even though delirium is not rare, it is not considered to be an expected part of recovery.
The nurse is administering a calcium channel blocker to a patient who has symptomatic sinus tachycardia at a rate of 132 bpm. What is the anticipated action of the drug for this patient?
Decreases the sinoatrial node automaticity Rationale: Calcium channel blockers have a variety of effects on the ischemic myocardium. These agents decrease sinoatrial node automaticity and atrioventricular node conduction, resulting in a slower heart rate and a decrease in the strength of myocardial contraction (negative inotropic effect).
A client has been recently placed on nitroglycerin. Which instruction by the nurse should be included in the client's teaching plan?
Instruct the client on side effects of flushing, throbbing headache, and tachycardia. Rationale: The client should be instructed about side effects of the medication, which include flushing, throbbing headache, and tachycardia. The client should renew the nitroglycerin supply every 6 months. If the pain is severe, the client can crush the tablet between the teeth to hasten sublingual absorption. Tablets should never be removed and stored in metal or plastic pillboxes. Nitroglycerin is very unstable and should be carried in its original container.
The nurse is educating a patient diagnosed with angina pectoris about the difference between the pain of angina and a myocardial infarction (MI). How should the nurse describe the pain experienced during an MI? (Select all that apply.)
It is sudden in onset and prolonged in duration. It is viselike and radiates to the shoulders and arms. It is substernal in location. Rationale: Chest pain that occurs suddenly, continues despite rest and medication, is substernal, and is sometimes viselike and radiating to the shoulders and arms is associated with an MI. Angina pectoris pain is generally relieved by rest and nitroglycerin.
A nurse is teaching a client who receives nitrates for the relief of chest pain. Which instruction should the nurse emphasize?
Lie down or sit in a chair for 5 to 10 minutes after taking the drug. Rationale: Nitrates act primarily to relax coronary smooth muscle and produce vasodilation. They can cause hypotension, which makes the client dizzy and weak. The nurse should instruct the client to lie down or sit in a chair for 5 to 10 minutes after taking the drug. Nitrates are taken at the first sign of chest pain and before activities that might induce chest pain. Sublingual nitroglycerin is taken every 5 minutes for three doses. If the pain persists, the client should seek medical assistance immediately. Nitrates must be stored in a dark place in a closed container because sunlight causes the medication to lose its effectiveness. Alcohol is prohibited because nitrates may enhance the effects of the alcohol.
When assessing a client who reports recent chest pain, the nurse obtains a thorough history. Which client statement most strongly suggests angina pectoris?
The pain occurred while I was mowing the lawn. Rationale: Decreased oxygen supply to the myocardium causes angina pectoris. Lawn mowing increases the cardiac workload, which increases the heart's need for oxygen and may precipitate this chest pain. Anginal pain typically is self-limiting, lasting 5 to 15 minutes. Food consumption doesn't reduce angina pain, although it may ease pain caused by a GI ulcer. Deep breathing has no effect on anginal pain.
A patient with coronary artery disease (CAD) is having a cardiac catheterization. What indicator is present for the patient to have a coronary artery bypass graft (CABG)?
The patient has at least a 70% occlusion of a major coronary artery. Rationale: For a patient to be considered for CABG, the coronary arteries to be bypassed must have approximately a 70% occlusion (60% if in the left main coronary artery).
A client with CAD thinks diltiazem (Cardizem) has been causing nausea. Diltiazem (Cardizem) is categorized as which type of drug?
calcium-channel blocker
A nurse is monitoring the vital signs and blood results of a client who is receiving anticoagulation therapy. What does nurse identify as a major indication of concern?
hematocrit of 30% Rationale: Hematocrit is a measurement of the proportion of blood volume that is occupied by red blood cells. A lower hematocrit can imply internal bleeding. Blood pressure of 129/72 and heart rate of 87 bpm are normal. A hemoglobin count of 16 g/dL is also normal.
A client has a blockage in the proximal portion of a coronary artery and decides to undergo percutaneous transluminal coronary angioplasty (PTCA). What medication will the nurse expect to administer during the procedure?
ticagrelor Rationale: During PTCA, the client receives heparin, an anticoagulant (ticagrelor), as well as calcium agonists, nitrates, or both, to reduce coronary artery spasm. Nurses do not routinely give antibiotics such as ceftriaxone during this procedure; however, because the procedure is invasive, the client may receive prophylactic antibiotics to reduce the risk of infection. An antihypertensive like metoprolol and a diuretic like hydrochlorothiazide may cause hypotension, which should be avoided during the procedure.