overdistention

overdistention

(ō′vĕr-dĭs-tĕn′shĭn)
Excessive stretching, insufflation, or inflation of an organ, e.g., of the lungs during mechanical ventilation or of the urinary bladder in bladder outlet obstruction.
References in periodicals archive ?
While normally the pericardium exerts a mild containing force that somewhat prevents overdistention of the cardiac chambers, in CP this extrinsic pressure is increased and most commonly transmitted uniformly to all cardiac chambers equalizing chamber pressures.
This mode of ventilation provides small tidal volumes and high mean airway pressures that prevent both collapse and overdistention of the alveoli, a key goal in ARDS treatment (Chan, Stewart, & Mehta, 2007).
The only complications were bradycardia, which responded to atropine, and overdistention of the lung if the tube was too large.
Emphysema patients characteristically present with overdistention, which produces the "barrel-chest" deformity.
Gastric overdistention and ileus are contributing factors to aspiration and VAP; however, the use of the OG tube is not enough and frequent auscultation of bowel sounds and monitoring of gastric residuals will alert nurses to the presence of an ileus.
Avoid uterine overdistention by using gravity feed rather than pump-delivered saline for input and output.
Correlation of lipid peroxidation with energetic metabolism and contractile function in overdistention of the rabbit urinary bladder.
The pathogenesis of pneumopericardium is probably an increase in intra-alveolar pressure with alveolar overdistention that results in rupture of alveolar walls, allowing air to travel through the pulmonary interstitium along perivascular sheaths to the lung hilum and mediastinum and to the pericardial reflection.
In animal models, ventilator-induced lung injury (2,3) is caused by alveolar overdistention rather than high proximal airway pressure (4)--with pulmonary oedema and lung injury the consequence of 'volutrauma' rather than 'barotrauma' (5).
By tracking compliance and resistance frequently and then adjusting the applied pressure in relative proportion to those parameters, flow, and delivered volume, proportional assist ventilation (PAV) offers a partial solution to off-switch and overdistention problems resulting from lopsided inflation impedance characteristics.
Overdistention, however, can lead to displacement of the pylorus posteriorly, which may hamper its visualization.
HFOV was used to achieve satisfactory ventilation without lung overdistention despite bilateral proximal airway stenoses.