Myocardial Infarction (MI) (USLOs 1, 2, 3, 4)

Full Answer Section

       

Financial Implications

  • Healthcare costs: MI can lead to significant financial burdens due to hospitalization, medications, and long-term care.
  • Lost income: MI may result in time off work, which can impact earnings and financial stability.
  • Insurance coverage: The availability and coverage of health insurance can influence access to care and treatment outcomes.

Source: American Heart Association. (2023). Heart Attack. https://www.heart.org/en/health-topics/heart-attack/understand-your-risks-to-prevent-a-heart-attack  

Environmental Implications

  • Exposure to pollutants: Exposure to air pollution, secondhand smoke, and other environmental toxins can increase the risk of heart disease.
  • Stress and social factors: Environmental factors such as stress, social isolation, and limited access to healthy food can contribute to heart disease.

Source: World Health Organization. (2019). Cardiovascular Diseases. https://www.who.int/health-topics/cardiovascular-diseases

Priority Nursing Interventions in the Emergency Department

  1. Monitor vital signs: Continuously monitor heart rate, blood pressure, oxygen saturation, and respiratory rate.
  2. Administer medications: As ordered by the physician, administer medications such as aspirin, nitroglycerin, and beta-blockers to improve blood flow and reduce heart workload.
  3. Prepare for diagnostic testing: Assist with preparing the patient for diagnostic tests such as electrocardiogram (ECG), echocardiogram, and cardiac markers.
  4. Provide emotional support: Offer emotional support and reassurance to the patient and their family.
  5. Manage pain: Assess pain and administer analgesics as needed.

Labs and Diagnostic Testing

  • ECG: To identify the location and extent of the MI.
  • Cardiac markers: Troponin, CK-MB, and myoglobin levels to confirm a diagnosis of MI.
  • Echocardiogram: To assess heart function and identify any structural abnormalities.
  • Complete blood count (CBC): To evaluate blood cell counts and identify any underlying conditions.
  • Basic metabolic panel (BMP): To assess kidney function and electrolyte balance.

Critical indicators:

  • Decreasing blood pressure: Indicates worsening cardiac function or shock.
  • Increasing heart rate: May indicate heart failure or other complications.
  • Decreasing oxygen saturation: Suggests respiratory distress or inadequate oxygen delivery to the heart.
  • Abnormal cardiac markers: Elevated levels of troponin, CK-MB, and myoglobin are indicative of MI.

Source: American College of Cardiology. (2023). Heart Attack. https://www.cdc.gov/heart-disease/about/heart-attack.html

Interdisciplinary Team Members

  • Cardiologist: To provide specialized medical management and treatment.
  • Cardiac surgeon: If surgical intervention is necessary, such as angioplasty or bypass surgery.
  • Respiratory therapist: To manage respiratory symptoms and assist with oxygen therapy.
  • Registered dietitian: To provide nutritional guidance and support.
  • Social worker: To address social and emotional needs and assist with discharge planning.
  • Physical therapist:
    To help with rehabilitation and improve functional capacity.

Source: American Heart Association. (2023). Heart Attack Treatment. https://www.heart.org/en/health-topics/heart-attack

Sample Solution

       

Pathophysiology of Myocardial Infarction (MI)

Myocardial infarction (MI), or heart attack, occurs when the blood supply to a portion of the heart muscle is interrupted, often due to a blockage in a coronary artery. This blockage prevents oxygen and nutrients from reaching the heart tissue, leading to cellular death.

Pathophysiological process:

  1. Atherosclerosis: Over time, cholesterol and other substances can build up in the coronary arteries, forming plaques.
  2. Plaque Rupture: These plaques can rupture, triggering blood clot formation.
  3. Thrombosis: The blood clot can block the coronary artery, preventing blood flow to the heart muscle.
  4. Ischemia: The lack of blood flow leads to ischemia, or oxygen deprivation, of the heart tissue.
  5. Necrosis: If the blockage is not resolved quickly, the affected heart tissue can die (necrosis).

Source: National Institutes of Health, National Heart, Lung, and Blood Institute. (2020). Heart Attack. https://www.nhlbi.nih.gov/resources/learn-what-heart-attack-feels-fact-sheet

Factors Related to Myocardial Infarction

Cultural Implications

  • Cultural beliefs and practices: Different cultures may have varying beliefs about heart disease and its causes, which can influence health-seeking behaviors.
  • Access to healthcare: Cultural factors can impact access to healthcare, including preventive care and emergency services.
  • Dietary habits and lifestyle: Cultural influences on diet and lifestyle can increase or decrease the risk of heart disease.

Source: Centers for Disease Control and Prevention. (2023). Heart Disease.

https://www.cdc.gov/heart-disease/about/index.html

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