Lab 5 ECG and Pulse 2014-02-21a

Lab 5: ECG and Pulse ECG & Pulse DATA REPORT Date: ___/___/___ Student’s Name: Sparkle Settles Lab Section: ____________ I. Data and Calculations Subject Profile Name: JOHN LO-7 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 1.15 1.13 1.14 1.14 Heart Rate BPM 52.40 53.33 52.86 52.86 Pulse Interval ∆ T 1.21 1.14 1.17 3.52 Pulse Rate BPM 49.59 52.86 51.50 153.95 Temp. Change Segment 2 R-R Interval ∆ T 1.20 1.09 1.09 1.13 Heart Rate BPM 50.00 55.29 55.04 53.44 Pulse Interval ∆ T 1.21 1.10 1.32 1.21 Pulse Rate BPM 0.22 0.22 0.20 0.21 Arm Up Segment 3 R-R Interval ∆ T 1.85 1.07 1.03 1.32 Heart Rate Pulse Interval Pulse Rate BPM ∆ T BPM 55.29 56.07 58.25 56.54 1.10 1.15 1.32 1.19 0.19 0.20 0.24 0.21 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 0.83 1.11 1.06 1 Pulse Amplitude 0.38 0.47 0.42 0.42 Temp. Change Segment 2 QRS amplitude 0.64 0.61 0.58 0.61 Pulse Amplitude 0.34 0.39 0.42 0.38 Arm Up Segment 3 QRS amplitude 0.56 0.59 0.54 0.56 Pulse Amplitude 1.14 1.21 1.55 1.30 Revised: 2014-02-21

Lab 5: ECG and Pulse C. Calculation of Pulse Speed (10 points) Distance between Subject’s sternum and shoulder? 22 cm Distance between Subject’s shoulder and fingertip? 71 cm Total distance? 93 cm Data from Segment 1 of the recording (measure with I-beam) Time between R-wave and Pulse peak: 0.49 secs Pressure wave speed: 189.79 cm/sec Data from Segment 2 of the recording (measure with I-beam) Time between R-wave and Pulse peak: 0.50 secs Pressure wave speed: 186 cm/sec Data from Segment 3 of the recording (measure with I-beam) Time between R-wave and Pulse peak: 0.44 secs Pressure wave speed: 211.36 cm/sec II. Questions (10 points each) D. Explain the relationship between the pulse recorded in the finger and heart muscle contraction When it comes to contraction, the blood is ejected from the heart and travels into the aorta. Moving on, the pressure wave then travels from that point all throughout the peripheral system. The end point of the pressure wave/pulse wave is when it reaches the fingertip. E. Which components of the cardiac cycle (atrial systole and diastole, ventricular systole and diastole) are discernible in the pulse tracing? Ventricular systole and diastole are discernible because they are usually what pumps the blood to the limbs of the body. F. Does raising the arm affect the frequency and amplitude of the ECG? Explain the physiological mechanism underlying this phenomenon. Raising the arm should not change the amplitude of the ECG. But it will change and effect the frequency. It is usually caused by changing the Venus return, the effort for you to raise your arm, or it can be affected by your breathing pattern. G. How would you explain the change in pulse amplitude in one arm when changing the temperature in the other one arm? We have a closed circulatory system. If you leave a hand in cold water, it leads to restriction in the arm and it is going to affect the blood flow in the other arm. Revised: 2014-02-21