2. Using the EKG tracing below, answer the following questions 3. Using the EKG tracing below, answer the following questions a. Ventricular Rhythm (highlight one): regular irregular b. Atrial Rhythm (highlight one): regular irregular a. Ventricular Rhythm (highlight one): regular irregular b. Atrial Rhythm (highlight one): regular irregular c. Are the P waves and QRS complexes in a 1:1 ratio? (Highlight one): Yes No c. Are the P waves and QRS complexes in a 1:1 ratio? (Highlight one): Yes No d. What is the ventricular rate? ______ beats/min e. What is the PR interval? ______ seconds Highlight one: Normal Abnormal f. What is the duration of the QRS complex? ______ seconds Highlight one: Normal Abnormal g. Interpretation: d. What is the ventricular rate? ______ beats/min e. What is the PR interval? ______ seconds Highlight one: Normal Abnormal f. What is the duration of the QRS complex? ______ seconds Highlight one: Normal Abnormal g. Interpretation:
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- Check the spacing between QRS complexes. - Determine if the rhythm is regular or irregular. Show more…
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For each of the following ECG tracings, determine the following: [1a.] What waveform is abnormal? [1b.] Is the problem with the ventricles or atria? [1c.] Is it a depolarization or repolarization problem? [2a.] What waveform is abnormal? [2b.] Is the problem with the ventricles or atria? [2c.] Is it a depolarization or repolarization problem? [3a.] What waveform is abnormal? [3b.] Is the problem with the ventricles or atria? [3c.] Is it a depolarization or repolarization problem?
Madhur L.
22) Which of the following represents the accurate sequence of the spread of cardiac excitation? (2 pts) a) Right atrium – right ventricle – left atrium – left ventricle b) Right ventricle – left atrium – left ventricle – right atrium c) SA node – AV node – bundle of His – Purkinje fibers d) SA node – bundle of His – AV node – Purkinje fibers 23) During the P-Q interval, which of the following mechanical events is/are occurring? Choose ALL that apply. (2.5 points) a) Atria contract. b) AV valves close creating the S1 heart sound. c) Blood volume in the ventricles increases. d) Pressure in the atria increases. e) Ventricles depolarize. 24) Match the ECG components to the appropriate description. (4 points) Matching options: • P wave • PQ interval • QRS complex • ST segment • T wave • TP interval a) Which ECG component corresponds to atrial depolarization? b) Which ECG component corresponds to ventricular depolarization? c) Which ECG component represents the time from the beginning of atrial excitation to the beginning of ventricular excitation? d) Which ECG component represents the time when the contractile muscle fibers of the ventricles are completely depolarized? e) What ECG wave comes immediately before ventricular systole? f) If heart rate increased, which ECG component would change the most? g) Which ECG wave comes immediately before atrial contraction? h) Which ECG wave comes immediately before ventricular relaxation?
4. ECG and Heart Sounds. A) What causes the first and second heart sound? B) When during the ECG does the first heart sound occur (be specific: before/during/after the ___ wave)? When does the second heart sound occur? C) Are the ventricle contracting or relaxing to cause the first and second heart sound? D) A friend tells you an ECG revealed that her son has a slight heart murmur. Should you be convinced that he has a heart murmur? Explain why. E) An ECG is the first test done to diagnose a heart attack. Because injured heart muscle doesn't conduct electrical impulses normally, the ECG may show that a heart attack has occurred or is in progress. Below is an ECG tracing during a heart attack. Analyze how this is different than a normal sinus rhythm?
Sri K.
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