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