Why the study?
How do lung volume and twitch potentiation affect transdiaphragmatic pressure measurements in normal subjects?
Population
Normal subjects
Comparison
Magnetic stimulation of the phrenic nerves at… vs Unpotentiated vs potentiated twitch…
Design
Other
Authors
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Requires control for lung volume and potentiation in twitch Pdi assessments; extends physiological data but leaves clinical protocols open.
How do lung volume and twitch potentiation affect transdiaphragmatic pressure measurements in normal subjects?
Diaphragm strength assessment using the twitch technique must control for both lung volume and twitch potentiation, as unpotentiated twitch Pdi decreases linearly with increasing lung volume.
Hamnegard et al. (1995) studied this question.
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