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Acute ischemic heart disease — Clinical Guidelines

Overview

Acute ischemic heart disease encompasses conditions caused by insufficient blood supply to the heart muscle, primarily due to coronary artery occlusion, leading to symptoms such as angina and myocardial infarction. 1 3 6

Diagnosis

Clinical Presentation: Chest pain, dyspnea, ECG changes (ST-segment elevation or depression).

Electrocardiography (ECG): ST-segment elevation myocardial infarction (STEMI) vs. non-ST-segment elevation myocardial infarction (NSTEMI).

Cardiac Biomarkers: Elevated troponin levels.

Coronary Angiography: Identifies specific coronary artery blockages.

Hemodynamic Assessment: Including end-diastolic flow reversal monitoring in specific cases. 1

Management

Primary PCI: First-line treatment for STEMI to restore coronary artery flow.

Antiplatelet Therapy: Aspirin and P2Y12 inhibitors (e.g., clopidogrel, ticagrelor).

Anticoagulation: Heparin or bivalirudin to prevent clot propagation.

Revascularization: Use of intra-aortic balloon pump (IABP) in cardiogenic shock, though efficacy may be limited by hemodynamic factors. 1

Management of Bleeding: Careful dosing and monitoring to avoid excessive bleeding, especially in high-risk patients (older age, female sex, impaired renal function). 2

Special Populations

Pediatrics: Limited efficacy of IABP due to hemodynamic factors like end-diastolic flow reversal. 1

Elderly: Higher risk of bleeding complications with antithrombotic therapy; careful risk assessment required. 2

Comorbidities: Diabetes mellitus and multi-vessel disease influence outcomes and management strategies in non-ST-elevation patients. 3

Key Recommendations

Primary PCI should be performed promptly in STEMI patients to improve outcomes. (Evidence: Strong 3)

Use of predictive instruments like the Acute Ischemic Heart Disease Predictive Instrument can reduce inappropriate CCU admissions without compromising patient care. (Evidence: Moderate 6 7)

Careful consideration of bleeding risk factors is essential when prescribing antithrombotic therapy to prevent excessive bleeding complications. (Evidence: Moderate 2)

Monitor hemodynamic parameters closely in pediatric patients requiring IABP support due to potential limitations in efficacy. (Evidence: Weak 1)

References

1 Bartoli CR, Rogers BD, Ionan CE, Pantalos GM. End-diastolic flow reversal limits the efficacy of pediatric intra-aortic balloon pump counterpulsation. The Journal of thoracic and cardiovascular surgery 2014. link 2 Cohen M, Alexander KP, Rao SV. Bleeding after antithrombotic therapy in patients with acute ischemic heart disease: is it the drugs or how we use them?. Journal of thrombosis and thrombolysis 2008. link 3 Holmes DR, Berger PB, Hochman JS, Granger CB, Thompson TD, Califf RM et al.. Cardiogenic shock in patients with acute ischemic syndromes with and without ST-segment elevation. Circulation 1999. link 4 Green L, Mehr DR. What alters physicians' decisions to admit to the coronary care unit?. The Journal of family practice 1997. link 5 Arnar DO, Bullinga JR, Martins JB. Role of the Purkinje system in spontaneous ventricular tachycardia during acute ischemia in a canine model. Circulation 1997. link 6 McNutt RA, Selker HP. How did the acute ischemic heart disease predictive instrument reduce unnecessary coronary care unit admissions?. Medical decision making : an international journal of the Society for Medical Decision Making 1988. link 7 Pozen MW, D'Agostino RB, Mitchell JB, Rosenfeld DM, Guglielmino JT, Schwartz ML et al.. The usefulness of a predictive instrument to reduce inappropriate admissions to the coronary care unit. Annals of internal medicine 1980. link 8 Siltanen P, Sundberg S, Hytönen I. Impact of a mobile coronary care unit on the sudden coronary mortality in a community. Acta medica Scandinavica 1979. link 9 Aitken C, Cay E. Clinical psychosomatic research. International journal of psychiatry in medicine 1975. link

Acute ischemic heart disease