Inferior vena cava collapsibility index, renal dysfunction, and adverse outcomes in patients with broad spectrum cardiovascular disease

Aims The clinical implication of the inferior vena cava collapsibility index (IVCCI) has not been well evaluated in patients with various cardiovascular diseases. Method and results The relationships between clinical characteristics and echocardiographic indicators of the systemic intravascular volume status [IVCCI; the ratio of the early transmitral and early myocardial diastolic velocities (E/Em)] were evaluated at baseline, and the clinical status during follow‐up was compared across the IVCCI levels. Among 1166 patients (mean age=63.8±13.4 years), 934, 171, and 61 had high (≥50%), intermediate (25%–50%), and low (15 (P