Improvement of predicted hematocrit values after the initiation of cardiopulmonary bypass in cardiovascular surgery.

Hematocrit (Hct) values after the initiation of cardiopulmonary bypass (CPB) must be maintained appropriately to avoid perioperative complications. Therefore, an accurate prediction is required. However, the standard prediction equation often results in actual values that are lower than the predicted values.

[A case of relapsing polychondritis successfully assessed for airway diameters under application of bi-level positive airway pressure (bilevel PAP)].

A 52-year-old man was admitted to our department because of hypercapnic respiratory failure. His illness had begun with scleritis 5 years before, followed by swelling of the fingers and auricular cartilages and saddle nose 3 years before, when a clinical diagnosis of relapsing polychondritis was made. His chest CT after intubation revealed diffuse airway narrowing with complete collapse of both main bronchi on expiration.