Anaes Vivas · Applied cardiovascular & respiratory physiology
Data viva — the V/Q spectrum
A Primary data viva — assign each unit its V/Q ratio; predict the arterial effect; explain why shunt is refractory to oxygen while low-V/Q mismatch is corrected.
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Prompt
Three alveolar-capillary units are shown: shunt (perfusion, no ventilation), normal matched, and dead space (ventilation, no perfusion). For each, state the V/Q ratio, the effect on arterial oxygen, and the response to 100 percent oxygen.
Stimulus
Three alveolar-capillary units are shown: shunt (perfusion, no ventilation), normal matched, and dead space (ventilation, no perfusion). For each, state the V/Q ratio, the effect on arterial oxygen, and the response to 100 percent oxygen.
References3ShowHide
- [1]Coppola S, et al. Lung Imaging in Acute Hypoxemic Respiratory Failure: From Physics to Bedside Applications. J Clin Med, 2026.PMID 42279206
- [2]Baino B, et al. Eisenmenger Syndrome: The Pulmonology Perspective. Chest, 2026.PMID 42341977
- [4]Evans B, et al. Quantitative perfusion imaging from non-contrast micro-ct for pulmonary embolism evaluation in preclinical models. Phys Med Biol, 2026.PMID 42335950