Heart, Blood vessels, EKG

Heart

Blood vessels

EKG P: Atrial depolarization QRS: Ventricular depolarization T: Ventricular repolarization

AliveCor

Avoid touching metal and remove jewelry Place two fingers of each hand on electrode Alivecor: go to playstore and download Kardia Login: wccekg@gmail.com Password: windward96744 Avoid touching metal and remove jewelry

Directions After recording, email the recording to yourself Open it up on the class laptop and print. Identify and label 3 waves 4. Describe or diagram the associated events that are occurring in the cardiac pump at the time of each of these wave deflections. 5. Estimate the heart rate by measuring the distance between two adjacent QRS complexes.

R T P Q S P-R segment S-T HT T P wave T wave T-R S-T interval P-R interval P-R segment QRS Complex Q-T interval S-T interval T wave S-T T-R P wave HT T

Estimate Heart Rate

Conditions Lying Down (Baseline) Sitting Up Breath Hold Exercise Effects of body position and exercise on ECG wave durations and interval Conditions Lying Down (Baseline) Sitting Up Breath Hold Exercise

Table 1. Individual ECG Data Table 2. Effects of Exercise and Body Position on ECG Intervals TR   T (ht) T QT Int ST Seg QRS P-R seg P-R Int P Heart Rate Condition Lying down (baseline) Sitting up breath hold (20 sec) Exercise (5 minutes) Subject Info Subject 1 Gender Age Fitness 1-5 Subject 2 Subject 3 Ave Segment   Measured Duration Normal Duration P wave 1. 0.07-0.18 2. 3. Ave P-R Interval 0.12-0.20 P-R Segment 0.06 QRS Complex 0.06-0.12 S-T segment <0.20 Q-T Interval 0.32-0.38 T wave 0.10-0.25 T-R variable Estimated Heart Rate