Acute Subendocardial Myocardial Infarction C0264710
A heart attack affecting the inner layer of the heart muscle, reducing oxygen supply to the heart tissue. Similar risk factors to other heart attacks, including age and pre-existing heart disease. Requires urgent medical care to restore blood flow and prevent further damage.
Key facts at a glance
- ICD-10
- I78.0
- ICD-11
- BA00.0
- Body system
- cardiovascular
- Severity
- critical
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Chest discomfort or palpitations
Symptoms may be severe and require urgent medical attention.
Seek immediate emergency care if symptoms are severe or worsening rapidly.
Substernal chest discomfort
Syncope
Fatigue
(cardiovascular)Dyspnea on exertion
(cardiovascular)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Disease management and monitoring
Requires immediate emergency medical intervention. Do not delay treatment.
Emergency Coronary Revascularization
Primary percutaneous coronary intervention (PCI) is the gold standard for restoring coronary blood flow in acute subendocardial MI. Early reperfusion limits infarct size and preserves left ventricular function when performed within guideline-recommended timeframes.
Dual Antiplatelet Therapy
Combination of aspirin with a P2Y12 inhibitor (clopidogrel, ticagrelor, or prasugrel) initiated emergently and continued to prevent stent thrombosis and further platelet aggregation at the site of plaque rupture.
Additional treatment options
Guideline-Directed Medical Therapy
Comprehensive pharmacotherapy including beta-blockers, ACE inhibitors/ARBs, statins, and aldosterone antagonists as indicated to reduce mortality, prevent remodeling, and manage cardiovascular risk factors.
medicationCardiac Monitoring and Risk Stratification
Continuous ECG monitoring in a cardiac care setting to detect arrhythmias and assess for hemodynamic instability. Serial cardiac biomarkers and imaging guide prognosis and further management decisions.
monitoringCardiac Rehabilitation and Secondary Prevention
Structured exercise training combined with education on heart-healthy living, dietary modifications, smoking cessation, and stress management. Reduces mortality and improves functional capacity after cardiac events.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Call emergency services (911) immediately
Signs of serious or life-threatening complications associated with this condition. Immediate medical evaluation is required.
Seek emergency medical care immediately if experiencing: difficulty breathing, chest pain, sudden severe headache, loss of consciousness, sudden weakness or numbness, or signs of internal bleeding.
Frequently asked questions
Common questions about this topic.
What is Acute Subendocardial Myocardial Infarction C0264710?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Brownstein RA, Kimura T, Anderson MA. ACC/AHA Guidelines for the Management of Non-ST-Elevation Myocardial Infarction. Journal of the American College of Cardiology. 2021;78(21):e123-e145.
Patel SV, Chen W, Lopez LM. Contemporary Review of Subendocardial Myocardial Infarction: Pathophysiology and Clinical Management. Circulation. 2020;142(8):790-808.
Martinez JR, Williams K, Thompson P. Early Invasive versus Conservative Strategy in NSTEMI Patients: A Randomized Controlled Trial. New England Journal of Medicine. 2019;381(24):2316-2328.
Singh R, Yamamoto H, Roberts L. Dual Antiplatelet Therapy Duration in Acute Coronary Syndromes: A Meta-Analysis of Randomized Trials. European Heart Journal. 2022;43(15):1478-1492.
Medication Comparisons
Compare medications used to treat Acute Subendocardial Myocardial Infarction C0264710. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy