RT Journal Article
SR Electronic
T1 Effects of abdominal binding on chest wall kinematics in tetraplegic individuals
JF European Respiratory Journal
JO Eur Respir J
FD European Respiratory Society
SP P244
VO 40
IS Suppl 56
A1 Sabine K. Illi
A1 Stefanie Hostettler
A1 Andrea Aliverti
A1 Robert Brown
A1 Gabi Mueller
A1 Christina M. Spengler
YR 2012
UL http://erj.ersjournals.com/content/40/Suppl_56/P244.abstract
AB Introduction: Tetraplegic individuals show a paradoxical inward motion of the ribcage during inspiration. Abdominal binding is supposed to decrease paradoxical breathing by decreasing abdominal compliance and increasing the zone of apposition of the diaphragm. We hypothesized that abdominal binding would reduce the paradox during quiet breathing (QB) as well as during different levels of hyperpnoea (HYP) and increase maximal voluntary ventilation (MVV).Methods: Chest wall kinematics were assessed by optoelectronic plethysmography in three male complete tetraplegics (C4-C7) during QB and during HYP at 40 and 100% MVV with and without abdominal binding. Tidal volume (VT) was partitioned into the relative contribution of the pulmonary rib cage (ΔVRCP), abdominal rib cage (ΔVRCA), and abdomen (ΔVAB). Inspiratory paradox time (IPT) was calculated as the percentage of inspiratory time (TI) with a decrease in VRCP and/or VRCA.Results: Abdominal binding reduced IPT at all ventilatory levels. The reduction was higher in RCA than in RCP. At rest, abdominal binding increased ΔVRCA more effectively than ΔVRCP. MVV was larger with abdominal binding in all subjects (105.1±49.0 vs. 92.0±53.9 l•min-1 without abdominal binding).Conclusion: The reduction in IPT and the increase in MVV in tetraplegic individuals suggest a functional benefit of abdominal binding which is mainly seen in the lower rib cage (RCA).Support: SNF grant no. 32-116777.