Respiratory Physiotherapy Can Increase Lower Esophageal Sphincter Pressure In GERD Patients | 3560
Journal of Gastrointestinal & Digestive System
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Inspiratory muscle training (IMT) has been shown to increase diaphragm thickness. We evaluated the effect of IMT on mid-
respiratory pressure (MRP) in patients with gastroesophageal reflux disease (GERD) and hypotensive lower esophageal
sphincter (LES), and compared the results with a sham group. Twenty consecutive patients (progressive loading group) and 9
controls (sham group) were included. All patients had end expiratory pressure (EEP) between five and 10 mmHg, underwent
esophageal manometry and pulmonary function tests before and after 8 weeks of training, and used a threshold IMT twice daily.
The threshold IMT was set at 30% of the maximal inspiratory pressure for the progressive loading group; while, the threshold
for sham-treated patients was set at 7 cm H
O for the whole period. There was an increase in MRP in 15 (75%) patients in the
progressive loading group, with an average gain of 46.6% (p<0.01), and in six (66%) patients in the sham group with a mean
increase of 26.2% (p<0.01). However, there was no significant difference between the groups (p = 0.507). The EEP also increased
compared with measurements before training (p<0.01), but it did not differ between groups (p = 0.727). IMT increased LES
pressure in patients with GERD, in both the treatment and sham groups, after an eight-week program. Although there was no
statistically significant difference between groups, suggesting the pressure increase in LES occurs regardless of the resistance load
of the threshold IMT. These findings need to be confirmed in further studies with a larger sample.
Renata Carvalho de Miranda Chaves has completed his Ph.D. at the age of 31 years from University of S?o Paulo School of Medicine. She is a
teacher at training program of gastrointestinal endoscopy at Instituto de Medicina Integral Fernando Figueira, a premier medical organization in the
Northeast of Brazil.
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