Lab 5 ECG and Pulse 2014-02-21a

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Virginia Commonwealth University *

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Aerospace Engineering

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Dec 6, 2023

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Lab 5: ECG and Pulse ECG & Pulse DATA REPORT Date: _09__/_19__/_2023__ Student’s Name: ___Adri Cook_________________ Lab Section: ____L52________ I. Data and Calculations Subject Profile Name: __John-L07_____________________ Age: ______ Height:_____________ Gender: __Male __Female A. Comparison of ECG with Pulse Plethysmogram (Segments 1-3) Complete table with data from three cycles from each segment and calculate the Means. (10 points) Condition Parameter Measure Cycle 1 Cycle 2 Cycle 3 Mean Arm Relaxed Segment 1 R-R Interval T 1.30 1.18 1.14 Heart Rate BPM 50.21 50.85 52.63 Pulse Interval T 1.21 1.12 1.14 Pulse Rate BPM 49.79 53.57 52.86 Temp. Change Segment 2 R-R Interval T Heart Rate BPM Pulse Interval T Pulse Rate BPM Arm Up Segment 3 R-R Interval T Heart Rate Pulse Interval Pulse Rate BPM T BPM B. Relative Volume Changes (Segments 1-3). Complete table with data from each recording segment. (10 points) Condition Parameter Cycle 1 Cycle 2 Cycle 3 Mean Arm Relaxed Segment 1 QRS amplitude 1.18 1.10 1.14 Pulse Amplitude 0.49 0.44 0.43 Temp. Change Segment 2 QRS amplitude Pulse Amplitude Arm Up Segment 3 QRS amplitude Pulse Amplitude Revised: 2014-02-21
Lab 5: ECG and Pulse C. Calculation of Pulse Speed (10 points) Distance between Subject’s sternum and shoulder? _____24______________cm Distance between Subject’s shoulder and fingertip? _____68______________cm Total distance? _____92_____________cm Data from Segment 1 of the recording (measure with I-beam) Time between R-wave and Pulse peak: ___0.48_____________secs Pressure wave speed: _____92/0.48_____________cm/sec Data from Segment 2 of the recording (measure with I-beam) Time between R-wave and Pulse peak: ___0.38_____________secs Pressure wave speed: __92/0.38________________cm/sec Data from Segment 3 of the recording (measure with I-beam) Time between R-wave and Pulse peak: ___0.49_____________secs Pressure wave speed: ___92/0.49_______________cm/sec II. Questions (10 points each) D. Explain the relationship between the pulse recorded in the finger and heart muscle contraction ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ E. Which components of the cardiac cycle (atrial systole and diastole, ventricular systole and diastole) are discernible in the pulse tracing? ____The ventricular systole and the diastole are discernible in the pulse tracing.__________________________________________________________________ _______________________________________________ F. Does raising the arm affect the frequency and amplitude of the ECG? Explain the physiological mechanism underlying this phenomenon. _____It will affect only the frequency, not the amplitude._______________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ____ Revised: 2014-02-21
Lab 5: ECG and Pulse G. How would you explain the change in pulse amplitude in one arm when changing the temperature in the other one arm? _____Our________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ___ H. Is there any change in the pulse when the subject raises his/her arm? Explain ____Yes, the blood flow will be working against gravity, since the gravity is pulling the blood down.__________________ I. What differences in the pulse amplitude and speed would be expected between a 70-year-old man and a teenager? ___There is more resistance ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ _____________________________________________________________________ J. Does the amplitude of the QRS complex change with the pulse amplitudes? Explain your reasoning. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Bonus question: Would the amplitude of your pulse and your heart rate change if you were dehydrated? If so, why? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Revised: 2014-02-21
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