The Science Journal of the American Association for Respiratory Care

1997 OPEN FORUM Abstracts

COMPUTER SIMULATION OF LUNG VOLUMES AND VENTILATORY CAPACITIES USING ANTHROPOMETRIC DATA OBTAINED ON THE ANTHROPOMETRIC MEASURING CHAIR (AMC)

Z Balantic*, M Flezar**, P Novak*, j Sorli**, F Kandare**. *University of Ljubljana, Faculty of Mechanical Engineering; **Clinical Centre Ljubljana, Clinic of Internal Diseases--Golnik, Slovenia.

We sought to validate unconventional anthropometric values that can be obtained in paralyzed patients seated in a special chair (AMC) as predictors of ventilatory function (FVC, FEV1, TLC, RV) in order ultimately to establish reference values for handicapped subjects. We studied 45 healthy adults, measuring lung function with spirometry and plethysmography. Multiple stepwise regression analysis incorporating 21 unconventional anthropometric variables significantly correlated with conventional measures (age, mass, height) led to equations for prediction of FVC, FEV1, TLC, and RV in men and women. SH=sitting height; A=age; ST=sternum length; CDX=difference in expiratory & inspiratory chest circumference at xiphoid; AS=armspan;CIX=inspiratory chest circumference at xiphoid; LLEX=expiratory laterolateral chest diameter at xiphoid; APD5=diff in anteroposterior expiratory & inspiratory diameter at 5th vertebra; LLI5=inspir chest diameter at 5th vertebra;CD5=difference in insp & expir diameter at 5th vertebra; APIX=inspir anteroposterior diameter at xiphoid; LLDX=diff in inspir & expir laterolateral chest dia at xiphoid;LLE5=expir laterolateral chest diameter at 5th vertebra.

Women: FVC=30.311SH-30.222A+117.981ST+76.729CDX [R^{2}=0.989SD=494 mL]

Men: FVC=33.584AS-86.489CIX+222.768LLEX+211.001APD5 [R^{2}=0.991 SD=550 mL]

Women: FEV1=-10.356SH-134.667LLI5+46.217AS+151.603CD5 [R^{2}=0.991SD=363 mL]

Men: FEV_{1}=81.242SH-92.415CIX+130.229LLEX+109.338ST-185.832CDX+86.066CD5 [R^{2}=0.993 SD=387 mL]

Women: TLC=63.408SH-82.485APIX+108.962ST [R2=0.989 SD=643 mL]

Men: TLC=55.596AS-128.506LLDX+256.730ST-58.878CIX-329.307CDX [R^{2}=0.093 SD=687 mL]

Women: RV=149.695LLE5-138.072APIX+12.943A [R^{2}=0.966 SD=342 mL]

Men: RV=-1.366APE5+11.665A-71.498LLD5+130.313ST-153.040CDX [R2=0.980 SD=373 mL]

Unconventional anthropometric variables obtained using the AMC chair can be used to predict lung volumes in adults.

OF-97-185

You are here: RCJournal.com » Past OPEN FORUM Abstracts » 1997 Abstracts » COMPUTER SIMULATION OF LUNG VOLUMES AND VENTILATORY CAPACITIES USING ANTHROPOMETRIC DATA OBTAINED ON THE ANTHROPOMETRIC MEASURING CHAIR (AMC)