When you breathe, a certain fraction of your air enters the lungs and blood flows through the capillaries. When this ratio is above or below 0.8, you may have ventilation/perfusion (V/Q) mismatch. A V ...

The influence of gravity on the distributions of ventilation and blood flow, as demonstrated by the effects of posture, is discussed and explained on the theoretical basis of gravitational gradients ...

Extract: Serial studies of arterial and alveolar oxygen, carbon dioxide, and nitrogen tensions, arterial pH, and ratios of dead space: tidal volume were made in 24 nondistressed premature infants. By ...

BMC Clin Pharmacol. 2010;10:1-27. However, there are some notable exceptions to this general rule where the adipose-blood exchange of several highly lipid soluble molecules seems to be diffusion ...

Reports on the promise of MRI in selection of stroke patients for thrombolysis have been considerable. [44] However, there are some practical disadvantages of MRI compared with CT. First, an MRI scan ...