QuickFacts: The vital capacity is typically about 60 mL/kg, but varies widely among normal individuals. Restrictive pulmonary conditions such as pulmonary edema, atelectasis, pregnancy, ascites, pleural effusion, pneumothorax, or muscle weakness decrease vital capacity. It is composed of the inspiratory reserve volume, the tidal volume, and expiratory reserve volume. Ucenter Dress wedding collections With removable cap sleeves