Ventricular tachycardia and the chest thump.

CHEST, 74: 6, DECEMBER, 1978 pulmonary capillary wedge pressure to normal by increasing extramural pressure. So for us, therapy with IPPV and PEEP usually influences the pulmonary capillary wedge pressure, especially when the central blood volume varies from normal; thus, the interest and limits of the “weaning test” are clearly defined. In some cases, therapy with artificial ventilation does not change the pulmonary capillary wedge pressure.5 This results from either a balance between the change of central blood volume and extramural pressure induced by artificial ventilation or the severity of the pulmonary diseases. In the latter case, very high airway resistances or very low pulmonary compliance (or both) can explain why airway pressures are not transmitted to the vessels, at least where the catheter