However there has been argument that caval opening actually constricts during inspiration.

The caval opening (at the level of the T8 vertebra) passes through the central tendon.

Caval filter migrated to heart or pulmonary artery (4 patients)

Suture to the abdominal wall is used to induce circulation away from portal circulation into caval circulation.

Surgery is extended to remove the entire renal vein and caval thrombus and a portion of the vena cava as necessary.

Lucio Fabbri - violin in Indiani (A caval donando)

Remo Ceriotti - banjo in Indiani (A caval donando)

The arterial clamp was released, venting the initial flow through the splenic vein of the specimen which was then tied, and the caval clamp removed.

Jaffe RB, Harrison TS, Cerny JC: Localization of metastatic pheochromocytoma in pregnancy by caval catheterization.

But with the retro hepatic caval injury, there is so much to do even to expose the injury and get a crack at sewing up the hole, the victim ends up bleeding out first.

The Romanian caval dobrogean ('Dobrujan caval') or caval bulgăresc is a similar instrument to the Bulgarian kaval.

The procedure employs a baffle to redirect caval blood flow to the left atrium which then pumps blood to the left ventricle which then pumps the deoxygenated blood to the lungs.

Budd-Chiari syndrome, caused by occlusion of hepatic venous outflow, can lead to hypertrophy of the caudate lobe due to its own caval anastomosis that allows for continued function of this lobe of the liver.

The caval opening is a hiatus in the diaphragm of humans through which passes the inferior vena cava, the wall of which is adherent to the margins of the opening, and some branches of the right phrenic nerve.

In particular sinus node dysfunction, atrial arrhythmias, ventricular arrhythmias including sudden cardiac arrhythmic death, heart failure due to anatomically right ventricular failure or venous obstruction at the level of the baffle or caval anatomy have been described.

Since thoracic pressure decreases upon inspiration and draws the caval blood upwards toward the right atrium, increasing the size of the opening allows more blood to return to the heart, maximizing the efficacy of lowered thoracic pressure returning blood to the heart.