Tidal Volume (VT) Vent: normal resting amount?

Tidal Volume (VT) Vent: normal resting amount?

• A. 50-80 mL
• B. 8-12 mL
• C. 5-8 mL
• D. 1-3 mL

Answer: (C)

Tidal volume is the amount of air moved in or out with a normal breath. In healthy adults at rest, it’s about 5 to 8 milliliters of air for each kilogram of ideal body weight. That means a typical adult breathes roughly 350–560 mL per breath, often around 500 mL, when at rest. The 5–8 mL range reflects this per-kilogram standard for resting breathing. The other options are either far too small to support adequate ventilation at rest or exceed what’s normally seen during quiet breathing.

Tidal volume is the amount of air moved in or out with a normal breath. In healthy adults at rest, it’s about 5 to 8 milliliters of air for each kilogram of ideal body weight. That means a typical adult breathes roughly 350–560 mL per breath, often around 500 mL, when at rest. The 5–8 mL range reflects this per-kilogram standard for resting breathing. The other options are either far too small to support adequate ventilation at rest or exceed what’s normally seen during quiet breathing.