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clinical2ECG
ecg
| Question | Answer |
|---|---|
| SA NodeSinoatrial Node | Bodies natural pacemakerRegulates heart beat |
| Depolarization | Contraction of cardiac cells |
| Repolarization | Recovery of the heart |
| Polarization | Heart relaxes briefly |
| P-Wave | Atrial depolarizationRecorded as a + deflection |
| QRS-Wave | Ventricular depolarization |
| T-Wave | Ventricular repolarization Recorded as + deflection |
| Lead 1 | Records electricle activity between RA + LA |
| Lead 2 | Considered a rhythm strip records seperat and longer 6-12 inchesRecords electrical activity between RA + LL |
| Lead 3 | Records electrical activity between LA + LL |
| aV | Augmented Voltage |
| aVR | Records electrical activity midpoint between LA added to LL directed to RA |
| aVL | Records electrical activity midpoint between RA added to LL directed to LA |
| aVF | Records electrical activity midpoint between RA added to LA directed to LL |
| V1 | 4th intercostal space R of sternum |
| V2 | 4th intercostal space L of sternum |
| V4 | 5th intercostal space middle at about the left nipple |
| V3 | Midway between V2 and V4 |
| V6 | Horizontal to V4 left axillary line |
| V5 | Horizontal to V4 left anterior axillary line Between V4 and V6 |
| Measurement for ECG | Millavolt1 mv = 10 mm high |
| Wandering Baseline Artifacts | Stylus moves from center of the paperFrom not enough gel |
| Interupted Baseline Artifact | Breaks between waves Wires may be detached or electrode falls off |
| Somatic Tremor Artifact | Jaggard peaks Partient not being still |
| Ace Interferance | Small regular peaks Lead wires could be crossed use 3 prong outlet for 3 prong plug |
| Normal Adult HR | 60-100 bpm |
| Bradycardia | Less than 60 bpm cardiac arrythmia |
| Tachycardia | Greater than 100 bpm cardiac arrythmia |
| Atrial Fibrillation | extreme repid 400-500 bpm P wave cant distiguish to record it |
| Ventricular Arrythmia | Premature Ventricular contractions considered common disturbances |
| Ventricular Tachycardia | V-Tach life threating can turn into fibrillation or cardiac standstill |
| PTCA Percutaneous Transluminal Coronary Angioplasty | Balloon like angioplasty catheter into femoral artery and threaded to heart |
| ICD Implantable Cardioverter Defibrillator | Implanted into chest wall with wires leading to heart and will give a shock to get heart into normal rhythm |
| CAB Coronary Artey Bypass | Part of vein reattached pass blockage to reestablish blood flow to heart |