Haemodynamic assessment following inferior vena cava resection without replacement

Area of Science:

• Vascular Surgery
• Surgical Oncology
• Cardiovascular Physiology

Background:

• Bulky retroperitoneal malignancy may necessitate en bloc resection of the infrarenal inferior vena cava (IVC).
• Limited objective hemodynamic data exists for peripheral venous systems after IVC resection without reconstruction.
• This study evaluates the clinical and hemodynamic impact of omitting IVC reconstruction.

Purpose of the Study:

• To assess the symptomatic and hemodynamic consequences of not reconstructing the resected infrarenal inferior vena cava.
• To provide objective data on peripheral venous system function post-IVC resection.
• To inform surgical decision-making regarding IVC reconstruction.

Main Methods:

• Retrospective descriptive study at Princess Alexandra Hospital.
• Five patients with resected thrombosed infrarenal IVC (due to testicular cancer, renal cell carcinoma, or IVC aneurysm) were analyzed.
• Clinical outcomes assessed using modified venous clinical severity and disability scores.
• Hemodynamic assessment via postoperative venous duplex ultrasound and air plethysmography.

Main Results:

• Patients reported minimal symptoms, with modified venous clinical severity scores ≤2 and venous disability scores ≤1.
• Hemodynamic studies revealed only minor abnormalities in the peripheral venous system.
• No significant peripheral venous hypertension was observed.

Conclusions:

• Non-reconstruction of the resected thrombosed infrarenal inferior vena cava is associated with minor peripheral venous hypertension.
• Symptomatic and hemodynamic sequelae appear minimal following this approach.
• This suggests that reconstruction may not always be necessary after infrarenal IVC resection.