Lung Volumes and Capacities

noted the volume value. Then, tapped the bottom of the valley that followed it and noted the volume value. Then, calculated the D y value and recorded it to the nearest 0.1 L as the total Tidal Volume. 9. Next, we determined the D y for the Tidal Volume portion of the graph. We tapped the peak that represented the maximum inspiration and noted the volume value. Using the level of the peaks graphed during normal breathing from Step 8, we calculated the D y value and recorded it to the nearest 0.1 L as the total Inspiratory Reserve Volume. 10. Next, we determined the D y for the Tidal Volume portion of your graph by tapping the valley that represented our maximum expiration value and noted it. From here, using the level of the valleys graphed during normal breathing again from Step 8, we calculated the D y value and record it again to the nearest 0.1 L as the total Expiratory Reserve Volume. 11. From here we could calculate the Vital Capacity and estimated it to the nearest 0.1 L (in Table 1) using the equation provided below. VC = TV + IRV + ERV 12. After this, we could calculate the Total Lung Capacity and enter the total to the nearest 0.1 L (in Table 1) with the provided equation below. (Using the value of 1.5 L for the RV.) TLC = VC + RV Results Table 1 Volume measurement (L) Helena’s (L) Nelson’s (L) Faith’s (L) Tidal Volume (TV) 1.91 1.59 1.69 Inspiratory Reserve (IRV) 0.49 0.55 0.72 Expiratory Reserve (ERV) 0.65 2 1.13 Vital Capacity (VC) 2.84 3.76 3.65 Residual Volume (RV) ≈1.5 ≈1.5 ≈1.5 Total Lung Capacity (TLC) 4.34 5.26 5.15 Data Calculations in Table 1 formated from data points in graphs below: