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MINERVA ORTOPEDICA E TRAUMATOLOGICA
Rivista di Ortopedia e Traumatologia
Minerva Ortopedica e Traumatologica 2014 Ottobre;65(5):339-44
Abdominal surgery and its long term impact: a retrospective epidemiologic study. Is it possible that surgery may represent a risk factor for the development of deep vein thrombosis after many years? A pilot study
Scapin M., Rigoni S.
Physical Medicine and Rehabilitation, Hospital of Asiago, Health Units 3, Bassano del Grappa, Vicenza, Italy
AIM: Analysis of surgical sequelae and their role in the pathogenesis of disorders and diseases has been an area of focus for academics from different fields for many years. However, rigorous studies addressing events occurring long after surgery are still lacking. This paper aims to document if prior abdominal or pelvic surgery is a risk factor for the development of deep vein thrombosis after hip and knee replacement procedures.
METHODS: The study is observational and retrospective. Records from approximately 900 patients hospitalized in the Department of Physical Medicine and Rehabilitation (Hospital of Asiago) during the 2008-2010 period were analyzed; two groups of 20 people (all post hip and knee replacement surgery patients, in the sub-acute phase) were formed: the first group represented the test cases, i.e., all members were diagnosed with deep vein thrombosis (DVT) during the three post-operative years; the second group (control group) comprised 20 patients not affected by DVT, chosen by simple randomization.
RESULTS: In the first group (test cases), 19 of 20 patients had a history of prior abdominal surgery, while in the control group, 9 such cases were identified. Using the Odds Ratio Procedure, we tried to define the coefficient of exposure in the two groups: the values obtained were statistically significant and seem to confirm a correlation between prior abdominal surgery and DVT diagnosis.
CONCLUSION: The results confirm a positive association between prior abdominal surgery and subsequent development of DVT after orthopedic surgery. Nevertheless, more studies are needed to provide further evidence, given the small sample size available and the infrequency of the disease examined.