respiratory muscles


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respiratory muscles

the muscles that produce volume changes of the thorax during breathing. The inspiratory muscles include the hemidiaphragms, external intercostals, scaleni, sternomastoids, trapezius, pectoralis major, pectoralis minor, subclavius, latissimus dorsi, serratus anterior, and muscles that extend the back. The expiratory muscles are the internal intercostals, the abdominals, and the muscles that flex the back.
References in periodicals archive ?
2004) Endurance training of respiratory muscles improves cycling performance in fit young cyclists.
Hence significant increase of FVC EX which may be resulted from increase in the maximal shortening of the respiratory muscles and their strengthening as an effect of training can be the probable reason for significant increment of MEF75%1 sec.
Evaluation of a respiratory muscle biofeedback procedure: Effects on heart rate and dyspnea.
While this association is confounded by the likelihood that severity of illness will contribute to both duration of MV and the development of CIP, a recent systematic review has observed that the respiratory muscles in patients with ICUAW may be relatively spared the negative effects observed in peripheral muscles, possibly due to the intermittent stretch provided by the ventilator (36).
The findings, which were presented at the recent American Thoracic Society conference in Denver, show that a monthly dose of 100,000 IU (international units) of vitamin D given to COPD patients showed significant improvements in exercise capacity and respiratory muscle strength compared to a placebo group.
Also, the subject keeps his voluntary muscles relaxed and immobile while at the same time exercising a close and continuous voluntary control over respiratory muscles, thus consciously and persistently over-riding the usual excitatory stimuli to respiratory centers.
From a physiological point of view, NIV is similar to IMV, in fact, it reduces the breathing work and frequency, decreases the negative deflections of intrathoracic pressure, improves gas exchange, and rests respiratory muscles (16).
A second important consideration is that respiratory pump efficiency degrades as the respiratory muscles are disadvantaged by hyperinflation.
Pressure support ventilation (PSV) is a ventilation mode that is designed to support patients' inspiratory effort according to the strength of their respiratory muscles.
Lung volume decreases, as does the strength of respiratory muscles, making it easier for pneumonia to develop.
Since it relaxes respiratory muscles too, in a surgery anaesthetists would maintain the respiration of the patient artificially.