✦ LIBER ✦

Needle EMG of the human diaphragm: Power spectral analysis in normal subjects

✍ Scribed by Robert Chen; Stephen J. Collins; Hussein Remtulla; Anthony Parkes; Charles F. Bolton

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 641 KB
Volume: 19
Category: Article
ISSN: 0148-639X
DOI: 10.1002/(sici)1097-4598(199603)19:3<324::aid-mus7>3.0.co;2-f

No coin nor oath required. For personal study only.

✦ Synopsis

Needle EMG of the diaphragm was performed in 43 diaphragms in 23 healthy volunteers. The mean -rstandard deviation for the median frequency (MF) of the power spectrum was 233.3 5 58.1 Hz. The MF increased with age and showed a negative correlation with the forced vital capacity (FVC), but there was no correlation with other anthropometric measures or the results of phrenic nerve conduction study. The higher MF in older subjects may be due to early recruitment of larger units. The negative correlation between MF and FVC is likely secondary to a lower level of contraction required for normal breathing in subjects with high FVC. The integrated EMG (IEMG) of each inspiration strongly correlated with the tidal volume and the duration of inspiration. Power spectral analysis of diaphragmatic EMG is feasible and reliable. It can be used to assess respiratory muscle fatigue and may help in the diagnosis of neuromuscular disorders affecting the diaphragm.

📜 SIMILAR VOLUMES

Quantitative analysis of trabecular morp

Quantitative analysis of trabecular morphogenesis in the human costochondral junction during the postnatal period in normal subjects

✍ Fazzalari, N.L. ;Moore, A.J. ;Byers, S. ;Byard, R.W. 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 499 KB 👁 2 views

## Background: Quantitative histomorphometric features of the bone growth plate in the human rib have been investigated in infants, ranging in age from 3-36 weeks (mean 18.6 weeks) to provide data currently not available. ## Methods: Measurements were taken in each histological zone of the growth

Single Nucleotide Polymorphism analysis

Single Nucleotide Polymorphism analysis of the human adenosine A2B receptor gene: prevalence of SNPs in asthmatics and normal subjects

✍ Gino van Heeke; Rachael Seamons; Jean-Yves Metais; John R. Fozard; Stephen Goff; 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 142 KB 👁 2 views

## Abstract The adenosine A~2B~ receptor is found on human lung mast cells and is believed to mediate the bronchoconstriction in response to adenosine characteristic of asthmatics. As such it represents an attractive therapeutic target for asthma and allergic rhinitis. As genetic variability in dru