Ischemia Myocardial ischemia(MI) ECG and effects of ischemia

Ischemia Types Effects of Ischemia, Myocardial ischemia(MI) ECGECG General description with Basic idea of 12 Leads with Positions On Body. Read more ... » ,vertebrobasilar ischemia and other metabolic changes

• A temporary deficiency of blood flow to an organ or tissue,
• Normal muscle contraction and relaxation af­fected
• Angina pectoris has been considered the cardinal symptom of myocardial ischemia for more than two centuries.

 

• LVF (left ventricular failure)
• Papillary muscle dysfunction ~MR ~LV dilata-
• LVF
• Angina pectoris
• Myocardial necrosis and scarring
• MI
• Akinesis
• Dyskinesis.
• between 25 and 45 percent of patients with acutePterocarpus marsupium Indian Kino Bijaka ASANA (Heart wood) Ayurvedic Medicine OF inflammation diabetes. Read more ... » and chronicChronic Hepatitis Classification viral hepatitis Clinical features and Treatment. Read more ... » ischemic syndromes have evidence of myocardial ischemia during daily life,

 

Types of Ischemia –

 

myocardial ischemia (MI):

• evidence of myocardial ischemia in the absence of chest discomfort or other anginal equivalents.
• An inadequate supply of blood and oxygen to meet the metabolic demands of the heartAshwagandha Withania somnifera Ayurvedic Drug of Impotency, Spermatorrhoea, Nervous Tonic and Tension. Read more ... » muscle.
• Exercise testing or ambulatory monitoring shows transient ST segment changes

 

vertebrobasilar ischemia:

• Inadequate blood flow through the arteries that supply nutrients and oxygen to the structures at the base of the brain (esp. the brain stem and cerebellum).

lower limb ischemia:

• An inadequate blood flow to one or both legs due either to chronic arterial obstruction caused by atherosclerosisAcute Myocardial Infarction (AMI) Causes PATHOPHYSIOLOGY and Etiology. Read more ... » or to acute obstruction caused by embolism.

 

Metabolic Changes

 

 

• Accumulation of lactic acid, depletion (wash out) of high energy phosphates, oxygen and creatine phos­phate.
• In the presence of oxygen, fatty acid and glucoseSome Facts about Glucocorticoid & Major side effects. Read more ... » are metabolized to carbon dioxide and water.
• Fatty acids, glucose O₂ co_{2 —–>} and H₂0.
• In absence of oxygen fatty acids and glucose are metabolized to lactic acid which  promotes coronary spasm,
• Changes are reversible up to 10 minutes .
• after 20 minutes changes are irreversible.

 

 

ECG Changes

 

 

• typical changes of angina / IHDIschemic Heart Disease (IHD) Causes and Risk factors for Ischemic Heart Disease. Read more ... » are:
• ST depression
• T inversion
• These are seen in contiguous leads like 2, 3, AVF, ferior wa or I, L, V5,V6 (lateral wall).
• severe ischemia, ST elevation is seen and indi­:c~es transmural ischemia; it may evolve into ‘: myocardial infarction).
• eIedrical instabilit~ads to arrhythmiasSupraventricular tachycardia and Ventricular fibrillation Causes Diagnosis with Treatment. Read more ... » – VTVentricular Tachycardia VT Diagnosis Causes Clinical features with Treatment. Read more ... »-(ven­:-icular tachycardiaHyperglycemic Hyperosmolar State (HHS) Acute Complication Of DM. Read more ... ») -.and VF-(ventricular fibril~ation).
• death occurs due to pump failure or ventricular :tachyarrhythymias.