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- 1. Identify and color the following in the ECG image below: three P waves three QRS complexes three T waves three PR segments three ST segments two full TP segments two RR intervals ( ● ● ● ● (RR interval indicates the time for one heartbeat. The RR interval is measured from the peak of one QRS to the peak of the next QRS). h h9. Draw a normal ECG tracing. Then draw each of the arrhythmias. Atrial Flutter: Atrial Fibrillation: Ventricular tachycardia: Ventricular fibrillation: Asystole:7. Label the waves (P, QRS, T) and intervals (P-Q, S-T, Q-T) on the following ECG. 8. Match the portion of the ECG with the description. P wave A. This segment is elevated in acute myocardial infarction (heart attack). QRS complex B. Beginning of atrial excitation to beginning of ventricular excitation. T wave C. Ventricular depolarization P-Q interval D. Atrial depolarization S-T segment E. Ventricular repolarization F. Beginning of ventricular depolarization to end of ventricular repolarization. Q-T interval
- 6. Describe the parts of the electrocardiogram (ECG) and explain how these electrical events are related to the mechanical events of the cardiac cycle. Reference the Wigger’s diagram. Start at the P-wave and go through to the T-wave. Make sure to clearly state what each wave, interval, and segment represent. Make sure to clearly state the general rule concerning the timing of electrical and mechanical events as well as give specific examples. Mention P wave, QRS complex, T wave, PR interval, R-R interval, PR segment, ST segment, conduction system of the heart, autorhythmic cardiac cells, contractile cardiac cells, depolarization, repolarization, atria, ventricles, atrioventricular node.9. Draw a normal ECG tracing. Then draw each of the arrhythmias. Normal Sinus rhythm: First Degree Heart block: Second Degree Heart block: Atrial Flutter: Atrial Fibrillation: Ventricular tachycardia: Ventricular fibrillation: Asystole:4. On the base of ECG analyses define what structure is the pacemaker of heart. Explain why you think so. سلسلية سليل بليد
- 6. During which part of the EKG does each event occur? (Be as specific as possible.) Use this interactive activity to practice. Atrial depolarization AV nodal delay Ventricular depolarization Ventricles are contracting and emptying Ventricular repolarization Ventricles are relaxed and filling I Part of EKG During Which Event OccursStates) N 32. Describe what an ECG represents and what it does NOT represent. 33. Be able to identify the following when given images of an ECG such as the one below: P wave, PR segment, QRS complex, ST segment, T wave, TP interval wh. SEP 9 MacBook Air O4. Define the following terms: Electrocardiograph Electrocardiogram (=EKG = ECG) Bradycardia Tachycardia Auscultation Stethocope Fast heart rate Slow heart rate
- 8. Circle the term that does not belong in each of the following groupings. 1. AV valves closed AV valves open. SA node is pacemaker Ventricular systole 2. No P wave 3. Ventricles fill 4. Early diastole Semilunar valves open Ventricular pressure drops 5. Stenotic valve Restricted blood flow Heart sound after valve closes 6. Isovolumetric ventricular systole Semilunar valve closed Ventricular systole AV node is pacemaker AV valves open Semilunar valves open Junctional rhythm Late diastole Isovolumetric relaxation High-pitched heart sound Blood volume unchanging AV valve openпл ate I aVR rrr Прируу ил II aVL Mappe byyppig aVF VI Пари my при пруиру Isrpriprprprifrifrifrifrifrifu 25mm/s 10mm/mV 40Hz 005C 12SL 254 CID: 26 EI سه شهیدا Vil V4 V5 V6es) V 11. Trace the flow of impulses through the conduction system (step by step) and include at what points the following happen: 2 atria contract together 000 P F4 ● ● AV node delay occurs • interventricular septum contracts the outer walls of the 2 ventricles contract together ● F5 SEP 20 MacBook Air F6 F7 Focus ▶11 F8 BO F9 =I F10
