Elektromyographische Untersuchungen der Atemmuskelfunktion an normalen Versuchspersonen

Rossier, Paul; Nieporent, H. J.; Pipberger, Hubert V.; Kälin, R

doi:10.1007/bf02053581

Cited by 13 publications

(4 citation statements)

References 31 publications

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“…Recent findings suggest that while crural and costal diaphragmatic activation is similar at rest, costal activation (measured by intramuscular recording) increases disproportionately to crural activation when ventilation increases either voluntarily or involuntarily (46-48). This differs from earlier studies that measured costal activity via surface EMG and found parallel increases in costal and crural activity during increase ventilation; however, this difference in findings may be attributable to the greater contamination of surface costal EMGdi with intercostal and abdominal muscle activity (14)(15)(16). Thus, while there is significant methodological appeal in the robustness of relatively non-invasive esophageal measurements, it is worth considering that crural recordings may not fully represent IND to the diaphragm, especially during increased ventilatory demand.…”

Section: History Of Neural Drive Measurementcontrasting

confidence: 99%

“…EMG measurement via intramuscular needle electrodes has been used to investigate ventilatory mechanisms since the early 20th century (15)(16)(17)(18)(19). These earliest observations in dogs and rabbits demonstrated the direct link between phrenic nerve activity and diaphragmatic activation: namely, that action potentials of the phrenic nerve result in electrical activation of the diaphragm (20).…”

Section: History Of Neural Drive Measurementmentioning

confidence: 99%

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Clinical Utility of Measuring Inspiratory Neural Drive During Cardiopulmonary Exercise Testing (CPET)

2020

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Cardiopulmonary exercise testing (CPET) has traditionally included ventilatory and metabolic measurements alongside electrocardiographic characterization; however, research increasingly acknowledges the utility of also measuring inspiratory neural drive (IND) through its surrogate measure of diaphragmatic electromyography (EMGdi). While true IND also encompasses the activation of non-diaphragmatic respiratory muscles, the current review focuses on diaphragmatic measurements, providing information about additional inspiratory muscle groups for context where appropriate. Evaluation of IND provides mechanistic insight into the origins of dyspnea and exercise limitation across pathologies; yields valuable information reflecting the integration of diverse mechanical, chemical, locomotor, and metabolic afferent signals; and can help assess the efficacy of therapeutic interventions. Further, IND measurement during the physiologic stress of exercise is uniquely poised to reveal the underpinnings of physiologic limitations masked during resting and unloaded breathing, with important information provided not only at peak exercise, but throughout exercise protocols. As our understanding of IND presentation across varying conditions continues to grow and methods for its measurement become more accessible, the translation of these principles into clinical settings is a logical next step in facilitating appropriate and nuanced management tailored to each individual's unique physiology. This review provides an overview of the current state of understanding of IND measurement during CPET: its origins, known patterns of behavior and links with dyspnea in health and major respiratory diseases, and the possibility of expanding this approach to applications beyond exercise.

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Section: History Of Neural Drive Measurementcontrasting

confidence: 99%

Section: History Of Neural Drive Measurementmentioning

confidence: 99%

Clinical Utility of Measuring Inspiratory Neural Drive During Cardiopulmonary Exercise Testing (CPET)

2020

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“…The finding of electrical activity on the abdominal muscles in the sec ond half of inspiration of VC is in accordance with published data con cerning the normal subjects as well as the patients [2,16,17,20]. In our patients this activity appeared slightly earlier in the course of inspi ration than in the control subjects.…”

Section: Discussionsupporting

confidence: 81%

“…During the expiration of vital capacity (VC) the RA and OA muscles do not contract until the expiratory reserve volume is to be expired, consequently they contribute to the expiration of the last 30-40% of VC [2,12,19]. This is true if the expiration of VC is per formed slowly, on the other hand, in the course of forced expiration, performed at maximal rate, the muscles contract already from the onset of the manoeuvre [8,12,15,18,19], Surprisingly, an inspiratory activi ty was also found on abdominal muscles either during hyperventilation [14,18,20] or during maximal inspiration of VC at least in part of nor mal subjects [2,9,16,17,18,20], This antagonist activity appears in the course of maximal inspiration at the lung volume of about 80 % of VC and is believed to contribute to the limitation of inspiratory capacity and to be reflex of origin [2,7,9,19],…”

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confidence: 99%

The Ventilatory Function of Abdominal Muscles in Normal Subjects and in Patients with Chronic Obstructive Lung Disease

Skarvan¹

1971

Respiration

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The ventilatory function of rectus and oblique abdominis muscles was studied by means of surface electromyography in 14 patients with severe obstructive lung disease and 9 healthy control subjects. While the control subjects did not use the abdominal muscles in sitting position at rest, one third of the patients showed an active expiration and half of them a continuous activity already during quiet spontaneous breathing. During voluntary hyperventilation mobilized the majority of the patients the abdominal muscles at the mean ventilatory rate of 22.9 l/min in comparison with control subjects who did not activate their muscles until the ventilation increased beyond 50 l/min. Both muscles contracted in the course of slow expiration of vital capacity, significantly earlier in the patients than in the controls. Also, the antagonist inspiratory activity on abdominal muscles during maximal inspiration of VC and hyperventilation was more pronounced in the patients. It is concluded that in the patients with severe emphysema the abdominal muscles are mobilized more readily during different ventilatory manoeuvres and even at rest than in the healthy subjects.

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Mechanical and Electrical Properties of Respiratory Muscles

Sharp

Hyatt

1986

Comprehensive Physiology

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Elektromyographische Untersuchungen der Atemmuskelfunktion an normalen Versuchspersonen

Cited by 13 publications

References 31 publications

Clinical Utility of Measuring Inspiratory Neural Drive During Cardiopulmonary Exercise Testing (CPET)

Clinical Utility of Measuring Inspiratory Neural Drive During Cardiopulmonary Exercise Testing (CPET)

The Ventilatory Function of Abdominal Muscles in Normal Subjects and in Patients with Chronic Obstructive Lung Disease

Mechanical and Electrical Properties of Respiratory Muscles

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