A trombose da veia renal que se apresenta juntamente com trombose venosa profunda proximal — trombo envolvendo as veias poplítea, femoral ou ilíaca — representa uma situação tromboembólica venosa clinicamente significativa que requer manejo imediato e estruturado.
DOI: 10.3949/ccjm.91a.22090
Proximal DVT is defined as thrombus in the popliteal, femoral, or iliac veins.
The 2021 CHEST guidelines recommend treating proximal DVT with anticoagulation for at least 3 months.
Proximal DVT confers up to a 50% risk of pulmonary embolism if left untreated, so treatment with anticoagulation is recommended even in the absence of symptoms ("incidental DVT").
The 2021 CHEST guidelines recommend the use of DOACs over warfarin whenever possible, based on data showing a lower risk of major bleeding (especially intracranial hemorrhage) with DOACs vs warfarin (strong recommendation with moderate-certainty evidence).
Use of an inferior vena cava filter should be considered only in patients deemed to have an unacceptably high bleeding risk.
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