Cardiovascular-Frog-Lab 1 Blackboard 2011(2)

Cardiovascular-Frog-Lab 1 Blackboard 2011(2) - Cardiac...

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1 Cardiac Conducting System ≈1% of all cardiac cells are conducting cells AV Nodal cells delay conduction by 0.01 sec ECG P Q R S T
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2 Einthoven‟s Triangle AV Nodal cells delay conduction by 0.1 sec ECG P T Q
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3 Electrocardiogram (Lead II)
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4 What is the electrical axis of the heart? „Mean‟ and „Instantaneous‟ Axes of QRS Complex
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5 „Mean‟ and „Instantaneous‟ Axes of QRS Complex 60° 60° Apex of the Heart
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6 Internet Source of ECG Information: http://www.medicine.mcgill.ca/physio/vlab/default.htm „Click‟ on Cardiovascular Lab „Click‟ on Electrocardiogram „Click‟ on ECG Basics Cardiac Conducting System X
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7 Electrocardiogram (Lead II) Lengthening of PR intervals indicative of 1 st degree AV conduction block (actually the time from the beginning of the P wave to the beginning of the Q wave) Loss of QRS waves indicative of 2 nd degree AV conduction block Pathological ECGs
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8 2 nd 3 rd 1 st , 2 nd , and 3 rd Degree AV Heart Blocks 1 st : Prolonged P-R (P-Q) Interval
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This note was uploaded on 12/06/2011 for the course BIO 335 taught by Professor Cabot during the Fall '08 term at SUNY Stony Brook.

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Cardiovascular-Frog-Lab 1 Blackboard 2011(2) - Cardiac...

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