What question did this study set out to answer?

To validate a fully automated, on-line computerized spirometry system and establish normative predictive equations for ventilatory function in healthy adults.

December 1, 1969

On-line computerized spirometry in 738 normal adults.

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Why the study?

Does on-line computerized spirometry accurately measure pulmonary function compared to manual methods in normal adults?

Population

738 normal adults (604 men and 134 women)

Comparison

On-line computerized spirometry vs Manual spirometry measurements

Design

Cross-sectional

Authors

MDM L DickmanUniversity of Maryland, Baltimore CSC. DuWayne SchmidtUniversity of Utah RGRenee M. GardnerKarolinska Institutet

Discussion

Member takes

Implication

Computerized spirometry matches manual FVC/FEV1 accuracy in normals; leaves open validation in patients before clinical adoption.

Key Points

To validate a fully automated, on-line computerized spirometry system and establish normative predictive equations for ventilatory function in healthy adults.
Evaluated an automated, on-line computerized spirometry method by comparing computer-derived spirogram values directly with manual measurements.
Measured forced vital capacity (FVC), forced expiratory volume in one second (FEV1), maximal expiratory flow (MEF), and maximal mid-expiratory flow (MMF) in N=738 healthy adults (604 men and 134 women).
Recorded participant age, height, and weight to calculate correlation coefficients and develop regression equations for lung volume prediction.
The mean difference between manual and automated computer measurements of the same spirogram was less than 13% of the mean difference between repeated manual measurements within the same subject.
Predictive regression equations for FVC and FEV1 based on age and height demonstrated strong correlation between observed and predicted values (correlation coefficient r ≥ 0.63) across both sexes.
Predictive equations developed for MEF and MMF showed low correlation between observed and predicted values.

Structured PICO

Does on-line computerized spirometry accurately measure pulmonary function compared to manual methods in normal adults?

Population

738 normal adults (604 men and 134 women)

Intervention

On-line computerized spirometry

Comparator

Manual spirometry measurements

Outcome

Accuracy of computerized spirometry for forced vital capacity (FVC) and one-second forced expiratory volume (FEV1) compared to manual measurements, and derivation of predictive equationssurrogate

On-line computerized spirometry provides reliable measurements for FVC and FEV1 comparable to manual methods, allowing for the derivation of accurate predictive equations based on age and height.

Cite This Study

Dickman et al. (1969) studied this question.

synapsesocial.com/papers/6a7e1247d92caf7a03d94cc2 https://doi.org/10.1164/arrd.1969.100.6.780

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On-line computerized spirometry in 738 normal adults.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

On-line computerized spirometry in 738 normal adults.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider