What is the acceptable vital capacity (VC) in mL/kg?

The acceptable vital capacity (VC) range is generally considered to be greater than 10 mL/kg. This threshold indicates that the patient has sufficient lung volumes necessary for effective ventilation and the adequate exchange of gases. A vital capacity above this level suggests good pulmonary function and capacity to manage ventilation, which is particularly important in clinical scenarios such as assessing readiness for extubation or evaluating the potential for successful weaning off mechanical ventilation.

When VC is more than 10 mL/kg, it typically reflects a healthy lung compliance and respiratory muscle strength, which are crucial for spontaneous breathing efforts. Lower values, such as 8 mL/kg, would indicate compromised respiratory function which may necessitate further interventions or support. Hence, recognizing a vital capacity above 10 mL/kg as acceptable is an important part of evaluating and managing patients requiring respiratory care.