| A | B |
|---|
| collateral circulation | new bld vessels that form to supply heart muscle |
| ischemia | decreased O2 to cells=pain |
| angina pectoris | chest pain due to ischemia |
| infarction | area dies due to inadequate O2 |
| meds to tx CAD | NTG, vasodilators, antihypertensive |
| PTCA | balloon cath in coronary artery compresses plaque |
| stents | sm metal tubes, keeps artery open |
| laser angioplasty | pulses of light, vaporize plaque |
| atherectomy | motor driven circular blade to remove plaque |
| CABG | bypass of blocked coronary artery |
| diagnostic tests for MI | EKG, cardiac enzymes, ABGs |
| #1 cause of MI | coronary thrombosis |
| valsalva maneuver causes this | bradycardia |
| arrhythmia | abnormal HR, slow or fast |
| #1 cause of arrhythmias | ischemic heart disease |
| normal sinus rhythm | regular, 60-100, SA node |
| sinus bradycardia | regular, <60 |
| sinus tachycardia | regular, 100-150 |
| supraventricular tachycardia | HR >150 |
| atrial flutter | atria contracts rapidly, 200-400 |
| atrial fibrillation | disorganized atrial activity, atrial quiver |
| heart block | impulse from SA node>AV node interrupted |
| types of heart block | 1st, 2nd, 3rd, complete |
| premature ventricular contractions-PVC | ventricles contract early |
| ventricular tachycardia | rate 150-250 |
| ventricular fibrillation | ventricles quiver, no contractions |
| diagnose arrhythmia | EKG |
| cardioversion | electrically stops arrhythmias |
| pacemaker | for bradydysryhmias |
| radiofrquency cathetar ablation | heated cath destroys arrhythmias |
