Inferior vena cava (IVC) is a large collapsible vein whose diameter and extent of inspiratory collapse are known to correlate with right atrial (RA) pressures; hence, IVC dilatation represents a cardiac pathology. IVC dilatation in the absence of any cardiac involvement is …

A dilated IVC without collapse with inspiration is associated with worse survival in men independent of a history of heart failure, other comorbidities, ventricular function, and pulmonary artery pressure.

The diameter of the inferior vena cava (IVC) and degree of inspiratory collapse are used as indices in the echocardiographic estimation of right atrial (RA) pressure. Under normal RA pressure, the maximum IVC diameter is less than 20 mm, and …

Inferior vena cava (IVC) diameter and respirophasic variation are commonly used echocardiographic indices to estimate right atrial pressure. While dilatation of the IVC and reduced collapsibility have traditionally been associated with elevated ...

Oct 21, 2024 · Inferior Vena Cava (IVC) is the largest vein in the body. It is formed by the confluence of the left and right common iliac veins at the level of L5 vertebra. It runs cephalad all the way to the right atrium. The IVC generally runs along the right side of the spine.

May 20, 2023 · The inferior vena cava (IVC) returns blood to the heart, along with superior vena cava (SVC). Obstruction or compression to the IVC reduces the venous return to the heart, causing an imbalance in the hemodynamic equilibrium. Decreased venous return causes hemodynamic instability in several ways.

Apr 1, 2019 · In the absence of cardiac pathology, the presence of a dilated inferior vena cava (IVC) is considered idiopathic. To date, this phenomenon has only been described in athletic individuals as an adaptation to chronically augmented venous return.

When the flow of blood through the inferior vena cava is disrupted, it can lead to symptoms and complications. Understanding the underlying causes of inferior vena cava syndrome is important for proper diagnosis and management.

The distribution of inferior vena cava (IVC) diameter in patients without (left panel) or with (right panel) heart failure (HF). Patients in the highest tertile of IVC diameter were older, had lower body mass index, and were more likely to have atrial fibrillation and to be treated with diuretics.

The IVC was normal (<l.7 cm) in 5.2%, dilated (1.7 to 2.5 cm) in 70.7%, and very dilated (>/=2.6 cm) in 24.1% of athletes. The collapsibility index was 58% +/- 6.4% in athletes compared with 70.2% +/- 4.9% in the control group (P <. 001).