Bronchial smooth muscle contraction increases airway resistance, which increases the work of breathing; PTE increases the dead space and ventilation/perfusion
(V/Q) ratio; on the other hand, alveolar collapse, atelectasis, and bronchospasm decrease the V/Q ratio.
Value of the ventilation/perfusion
scan in acute pulmonary embolism.
Diagnoses were confirmed by pulmonary angiography, multi-slice CT or high-probablity ventilation/perfusion
A total of 610 patients were enrolled--Austrian adults diagnosed with VTE by venography, sonography, ventilation/perfusion
(V/Q) scan, or spiral computed tomography and treated for at least 3 months with anticoagulants.
scan was performed, which demonstrated normal lung perfusion--no defects.
Small tidal volumes, rapid respiratory rates, and inhomogeneous alveolar ventilation/perfusion
in neonates with lung disease often preclude [P.
The program integrates digital video, animation, narration, and several forms of diagnostic imaging including X-rays, CT scans, angiograms, and ventilation/perfusion
sup] However, OLV can cause an imbalance of the ventilation/perfusion
(V/Q) ratio and increase intrapulmonary shunt.
4 Those treatment strategies aim at gathering more pulmonary alveoli, inhibit pulmonary injury induced by high airway pressure, improve oxygenation state, increase pulmonary blood flow, reduce vessel shunt in lung, and increase ventilation/perfusion
The version used in this study does not correct for inter-tissue diffusion, anaesthetic metabolism, dead space or ventilation/perfusion
2]) in PAH patients than in healthy subjects, indicating inefficiency in gas exchange and altered ventilation/perfusion