Introduction
The purpose of this lab was to determine the rate, function, and integrity of the heart during an exercise EKG. An electrocardiogram measures the electrical activity of the heart over time. In this lab a subject will exercise for about 15 minutes, not including rest times and the EKG will measure the heart’s activity.
Methods
Collect the following demographics for the subject: age, gender, height, MI, skinfold measurements, and weight. Locate the 10 electrode sites and shave the area if necessary. Clean the skin with an alcohol swab and allow dry before placing the electrodes on the subject’s body. Then place the electrodes in the proper places along with the corresponding wires. After that collect a resting EKG for 3-5 minutes, then have the subject walk at a moderate pace for 3-5 minutes, then run at a slow pace for 3-5 minutes, and finally, have the subject return …show more content…
The Table below includes stage, speed, grade, HR from read out and calculated HR.
The HR method used was #1. In which you have to count each small box from one R wave to the next R wave then divide into 1500. For stage one I counted 21 small boxes from the Rhythm II section in the Rest EKG so the estimated HR was 71 bpm. For stage two I counted 14 small boxes from the Rhythm II section in the Walk EKG so the estimated HR was 107 bpm. For stage three I counted 9 small boxes from the Rhythm II section in the Rest EKG so the estimated HR was 167 bpm.
Below is Figure 1. Which shows the Cardiac Cycle on the rest EKG sheet using lead II.
Real time HR does and does not compare to the HRs I calculated from the rhythm strip because for the first and second strips the BPM was close but for the third one, it was really off. I am not really sure why there was a big error in the last one or which one was right, my guess would be the calculated one is right since the subject was running so you would expect his HR to go up not
The purpose of this lab was to determine the rate, function, and integrity of the heart during an exercise EKG. An electrocardiogram measures the electrical activity of the heart over time. In this lab a subject will exercise for about 15 minutes, not including rest times and the EKG will measure the heart’s activity.
Methods
Collect the following demographics for the subject: age, gender, height, MI, skinfold measurements, and weight. Locate the 10 electrode sites and shave the area if necessary. Clean the skin with an alcohol swab and allow dry before placing the electrodes on the subject’s body. Then place the electrodes in the proper places along with the corresponding wires. After that collect a resting EKG for 3-5 minutes, then have the subject walk at a moderate pace for 3-5 minutes, then run at a slow pace for 3-5 minutes, and finally, have the subject return …show more content…
The Table below includes stage, speed, grade, HR from read out and calculated HR.
The HR method used was #1. In which you have to count each small box from one R wave to the next R wave then divide into 1500. For stage one I counted 21 small boxes from the Rhythm II section in the Rest EKG so the estimated HR was 71 bpm. For stage two I counted 14 small boxes from the Rhythm II section in the Walk EKG so the estimated HR was 107 bpm. For stage three I counted 9 small boxes from the Rhythm II section in the Rest EKG so the estimated HR was 167 bpm.
Below is Figure 1. Which shows the Cardiac Cycle on the rest EKG sheet using lead II.
Real time HR does and does not compare to the HRs I calculated from the rhythm strip because for the first and second strips the BPM was close but for the third one, it was really off. I am not really sure why there was a big error in the last one or which one was right, my guess would be the calculated one is right since the subject was running so you would expect his HR to go up not