…myocardial territory supplied by the occluded artery. Conversely, an angiographically identified CTO without demonstrable ischaemia or viable myocardium provides a less compelling basis for intervention…

Continous medical discussion: the ECG blog ECG A deep learning ECG biomarker for sudden cardiac death: what the new Nature study shows Low risk (blue…

…acute coronary syndromes. The LMCA supplies a large myocardial territory through the left anterior descending (LAD) and left circumflex (LCx) arteries (Figure 1). Acute obstruction…

…narrowing of the left main coronary artery, which supplies the left anterior descending and left circumflex coronary territories. Because these vessels perfuse a large proportion…

…can aid in diagnosing ischemia and infarction and guide appropriate management strategies. For instance, administering nitroglycerin to alleviate ischemic chest pain may lead to hemodynamic…

…function. The abnormalities affect the myocardial area supplied by the arteries distal to the occlusion or stenosis. If the ischemia persists for 20 minutes, myocardial…

…the systemic circulation), and therefore it faces the highest workload; for the same reason, the left ventricle has the highest oxygen demand. The right ventricle…

…Consequently, the myocardium supplied by the occluded artery becomes ischemic. Ultimately this results in myocardial necrosis (death of myocytes) which can be detected by elevated…

Cardiology Indications for myocardial perfusion imaging Diagnosis of coronary artery disease (CAD) : Myocardial perfusion imaging can confirm or rule out CAD in patients with symptoms…

…perfusion defects in areas supplied by the disease artery. Thus, vasodilators replicate the effects of exercise on coronary arteries, without the need for physical activity…

…on degenerated saphenous vein grafts (SVGs), rotational atherectomy, and procedures performed for acute myocardial infarction. In SVG PCI, slow flow or no reflow rates may…

…in stent restenosis. Type 5 MI: MI related to CABG. Type 4b and type 4c events fulfil the criteria for type 1 MI. Procedural myocardial…

…shock most commonly reflects severe left ventricular (LV) dysfunction, accounting for approximately 80% of cases. Other causes include acute mechanical complications—particularly ventricular septal defect…

…of cardiovascular disease. It has been the number one killer in Western and high income countries for more than half a century, causing approximately 20…

…Causes and secondary contributors A search for secondary contributors is an essential first step. Recognised causes include: Diabetes and insulin resistance Thyroid disease Kidney disease…

…obesity. Gestational hypertension is defined in the supplied guideline material as blood pressure 140/90 mmHg on two separate occasions after 20 weeks of gestation…

…that the more myocardium supplied by an artery, the greater the ischemic area in case of occlusion. Ischemic preconditioning: preparing for ischemia The concept of…

…absence of oxygen. Unfortunately, glycogen yields only small amounts of ATP and glycogen supplies are limited. In order to reduce oxygen demands, cardiac myocytes stop…

…branch. Coronary artery dominance The coronary artery that supplies the PDA (posterior descending coronary artery), which supplies the inferior wall of the left ventricle, determines…

…Occasionally the LAD is very long and supplies a significant portion of the inferior wall; this type of LAD is called wrap around LAD (because…

… consequently, inducible regional systolic wall thickening abnormalities may develop in the myocardial territory supplied by the narrowed artery. The principal diagnostic endpoint is a new…