48, 676sĪssociation between arterial-end-tidal PCO 2 difference and dead space/tidal volume ratio (VD/VT) in children with obstructive acute respiratory failure (OARF) on invasive mechanical pulmonary ventilation (IMPV) Related content which might interest you: Dead space/tidal volume ratio (VD/VT) and pulmonary function (PF) in children with obstructive acute respiratory failure (OARF) on invasive mechanical pulmonary ventilation (IMPV)

It may be useful for clinical monitoring of this disease. 60 p.02).Ĭonclusions: in PH, VD/VT seems an useful index to identify hemodynamic and functional derangement. VD/VT correlated with: cardiac index (r-.61 p.02), PVR (r. Right atrium (RA) and ventricle (RV) volumes at Echo were 45☑0 and 33☗ mm, respectively. Results: Mean pulmonary artery pressure (mPAP) and pulmonary vascular resistance (PVR) were 44☑0 mmHg and 13±5 Wood units, respectively. Methods: We retrospectively evaluated 15 patients with PH (5 idiopathic, 5 related to scleroderma, 5 related to chronic thromboembolic disease) who underwent RHC, VD/VT, Echo and, 6MWT, and MRC index measurements. Thus, the ventilation inefficiency, in terms of gas exchange, is originated by the pulmonary vascular abnormalities which in turn affect pulmonary hemodynamics.Īim of the study: To investigate wether the degree of VD/VT increase correlated with pulmonary hemodynamics (RHC), echocardiographic (Echo) and functional parameters (6MWT and MRC dyspnea score index) in PH patients. Session: Pulmonary hypertension I Session type: Thematic Poster Sessionĭisease area: Pulmonary vascular diseasesĪbstract Introduction: In PH, VD/VT is increased as a consequence of decreased perfusion in ventilated lung 1.

Physiologic dead space definition