Lab Report 6 and 7
1. Resting HR and BP measures:
HR – 80 bpm
Health Classification – Normal
BP – 118/68
Health Classification – Normal
2. A. Resting and Exercise ECG:
B.
ECG Component
Resting ECG (Sec)
Exercise ECG (Sec)
P wave
QRS Complex (wave)
T wave
PR Interval
ST Interval
TP Interval
R-R Interval
C. Average Resting and Exercise HR Using R-R Interval:
Resting HR- 68bpm
Exercise HR- 87bpm
D.
How the overall ECG pattern changes to accommodate more waveforms.
It is important to note that HR is a definition of the intensity which the heat is operating at. It is expressed on the ECG through the various waves that criss cross the monitor. When resting, heart activity remains consistent and the ECG waves trace a consistent pattern as confirmed by the data collected from the ECG graph. During exercise on the other hand, the heart contracts rapidly causing more blood to flow through the heart so as to be supplied to other parts of the body in need of oxygen rich blood. The ECG waveforms therefore become closer together.
There exist two noticeable differences between resting ECG and exercise ECG. The p waves in the exercise ECG are higher than the resting ECG, though by a small margin. This is so because in exercise mode, the heart works more rapidly in order to send impulses quickly through the heart, thereby leading to rapid myocardium contraction. Secondly, the QRS complexes in the graphs vary. The exercise ECG is more open as compared to the resting ECG. This is also as a result of the differences in the heart work rate during resting and exercise mode.
3. ECG and Blood Pressure:
B.The relationship between the electrical activity (ECG) and the subsequent blood flow events in the artery with respect to the timing pattern of the stethoscope recordings and the corresponding ECG.
As indicated in the graph, each line records a different value. The red line records the blood pressure in the body. The green line records the values collected by the stethoscope, while the blue line records the ECG, revealing the heart’s electrical activity. The systolic phase in the graph exists between the end of the T wave and the beginning of the P wave, signaling the point where the sinoatrial node sends out electrical impulses that lead to myocardium contraction. The ECG and stethoscope readings show when relaxation and contraction of the heart occurs and both can be used to explain the heart activity. The stethoscope records when the heart physically contracts and relaxes, whereas the ECG detects when electrical impulses are sent out, displaying this in the form of waves.
LAB 7
1. Spirometry: Lung Volumes and Capacities
A. FVC – 5.8
FEV1.0 – 5.31
FEV1.0/FVC – 92%
Classification: Above 80% Normal
Based on the FEV1.0/FVC ratio and the classification rating, it is safe to say that my lung capacity is above normal. The predicted values and the measured value are similar, indicating lung capacity or the total number of breaths taken in a minute.
Having values below normal could be indicative of structural limitations of the lungs that cause the lungs to operate below full capacity.
B. Rest
C. Measurements
Lung Volume/Capacity
Measurement(L)
2. Ventilatory Changes from Rest to Exercise
A. Exercise
B. Measurements:
Ventilatory Measure
Rest
Exercise
TV (L)
FB (bths/min)
VE (L/min)
C. The Differences in Expired Ventilation Between Rest and Exercise
Changes in the tidal volume (TV) and the number of breaths each minute (FB) are responsible for the differences in expired ventilation between rest and exercise. Rise in tidal volume brings about an increase in the number of breaths per minute so as to occupy the available lung capacity especially when shifting from resting mode to exercise. The recorded tidal volume changes relate to the available lung capacity for ventilation to occur.
