Cardiac testing procedures (1)

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Cardiac testing procedures (1)

  1. 1. by Debbie Cornish<br />Cardiac Testing Procdures<br />
  2. 2. 3 types of cardiac testing procedures<br />Cardiac enzymes (CK, T, LDH)<br />Doppler ultrasound<br />Holter Monitor<br />
  3. 3. Blood tests used to determine the level of specific heart muscle enzymes.  Cardiac proteins are released into the bloodstream when heart damage occurs, such as a myocardial infarction (MI).  Measuring these enzymes is an important tool to diagnose heart disease.<br />cardiac enzymes<br />
  4. 4. cardiac enzymes<br />CK or CPK (creatnine phosphokinase)-An enzyme released into the bloodstream 4-6 hours after damage to the heart occurs.  Elevated levels usually (but not always) indicate heart muscle damage.<br />T (toponin)-An enzyme released into the bloodstream 2-6 hours after heart cell damage occurs.  Because it can detect damage earlier, it is a more reliable predictor of heart cell damage.<br />LDH (lactic acid dehydrogenase)-An enzyme that helps produce energy.  It is present in almost all types of the body.  Many diseases can cause an increase in LDH levels.<br />
  5. 5. doppler ultrasound<br />A noninvasive test that can measure blood flow and blood pressure by bouncing high-frequency sound waves off circulating red blood cells.<br />
  6. 6. Doppler studies can help detect these conditions<br />blood clots<br />poorly functioning leg vein valves <br />heart valve defects and congenital heart disease<br />arterial occlusion (blocked arteries)<br />PAD (peripheral artery disease)-a decreased circulation of blood in the legs<br />aneurysms<br />narrowing of an artery (example:  carotid artery stenosis)<br />
  7. 7.
  8. 8. Holter monitors<br />A machine worn continuously to record the heart rhythyms and electrical activity of the heart.  The person wearing it should keep a diary of all activity, and the interpreting doctor compares the abnormal holter activity to what the person related they did.<br />
  9. 9. holter monitors<br />
  10. 10. Holter monitors may be used to diagnose these conditions<br />Atrial fibrillation/flutter<br />Palpitations<br />Paroxysmal supraventricular tachycardia<br />Reasons for syncope (fainting)<br />Slow heart rate (bradycardia)<br />ventricular tachycardia<br />

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