NCLEX RN Practice Question # 568

NCLEX Examination.

Practice Question # 568.


Nclex

ANGINA

Description

  • Angina is chest pain resulting from myocardial ischemia caused by inadequate myocardial blood and oxygen supply.
  • Angina is caused by an imbalance between oxygen supply and demand.
  • Causes include obstruction of coronary blood flow resulting from atherosclerosis, coronary artery spasm, or conditions increasing myocardial oxygen consumption.

Causes of Chest Pain

Patterns of angina

Stable angina

  • Also called exertional angina
  • Occurs with activities that involve exertion or emotional stress; relieved with rest or nitroglycerin
  • Usually has a stable pattern of onset, duration, severity, and relieving factors

Unstable angina

  • Also called preinfarction angina
  • Occurs with an unpredictable degree of exertion or emotion and increases in occurrence, duration, and severity over time
  • Pain may not be relieved with nitroglycerin.

Variant angina

  • Also called Prinzmetal’s or vasospastic angina
  • Results from coronary artery spasm
  • May occur at rest
  1. Attacks may be associated with ST segment elevation noted on the electrocardiogram (ECG).

Intractable angina is a chronic, incapacitating angina unresponsive to interventions.

Preinfarction angina

  • Associated with acute coronary insufficiency
  • Lasts longer than 15 minutes
  • Symptom of worsening cardiac ischemia
  • Occurs after an MI, when residual ischemia may cause episodes of angina

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