spirometry
Differences
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| spirometry [2026/08/11 06:38] – [Interpretation] gary1 | spirometry [2026/08/11 06:40] (current) – [Interpretation] gary1 | ||
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| Line 59: | Line 59: | ||
| * FEV< | * FEV< | ||
| * FVC increasing by > 12% and, in adults, by more than 200mL | * FVC increasing by > 12% and, in adults, by more than 200mL | ||
| + | * **maximal voluntary ventilation (MVV) maneuver** | ||
| + | * this is another test that can be used | ||
| + | * patient is instructed to breathe as hard and fast as possible for 12 seconds | ||
| + | * result is extrapolated to 60 seconds and reported in liters per minute | ||
| + | * MVV generally is approximately equal to the FEV1 × 40 | ||
| + | * if the MVV is low but FEV1 and FVC are normal, poor patient effort, a neuromuscular disorder, or major airway lesion must be considered | ||
| =====Normal values for healthy adults===== | =====Normal values for healthy adults===== | ||
spirometry.txt · Last modified: 2026/08/11 06:40 by gary1