cardiovascular disorders
Unstable Angina
Coronary angiography
Patients with unstable angina whose symptoms have resolved typically undergo Angiography within the first 24 to 48 hours of hospitalization to detect lesions that may require treatment. Coronary angiography most often combines diagnosis with percutaneous coronary intervention (PCI—ie, angioplasty, stent placement). After initial evaluation and therapy, coronary angiography may be used in patients with evidence of ongoing ischemia (ECG findings or symptoms), hemodynamic instability, recurrent ventricular tachyarrhythmias, and other abnormalities that suggest recurrence of ischemic events. 