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[Postoperative computed tomography control of allogeneic vascular prostheses].
C Zwicker1, M Langer, M Cordes
1Radiologische Klinik und Poliklinik, Klinikum Rudolf Virchow, Standort Charlottenburg, Freie Universität Berlin.
Digitale Bilddiagnostik
|March 1, 1989
Summary
Computed tomography (CT) effectively detects complications after vascular prosthesis surgery. CT findings like perigraft gas and fluid indicate bypass infection, while digital subtraction angiography (DSA) is complementary for vascular issues.
Area of Science:
- Radiology
- Vascular Surgery
- Medical Imaging
Background:
- Alloplastic vascular prostheses are used in bypass surgeries.
- Postoperative complications can arise, necessitating accurate diagnostic methods.
- Evaluating perivascular alterations is crucial for patient management.
Purpose of the Study:
- To assess the utility of computed tomography (CT) in diagnosing complications following vascular prosthesis surgery.
- To compare CT findings with digital subtraction angiography (DSA) in selected cases.
- To identify specific CT indicators of postoperative complications.
Main Methods:
- Retrospective analysis of 33 CT studies from 26 patients who underwent vascular prosthesis surgery.
- Comparison of CT findings with postoperative digital subtraction angiography (DSA) in 16 cases.
- Clinical follow-up to confirm diagnoses.
Main Results:
- 13 patients had no pathological findings.
- Bypass infection was diagnosed in 4 cases, with CT showing perigraft gas (2/4), perigraft fluid (4/4), contrast enhancement (4/4), and fistulas (2/4).
- Sterile hematomas (3 patients) and perigraft seromas (3 patients) were also identified postoperatively.
Conclusions:
- CT is the primary imaging modality for diagnosing perivascular alterations after bypass surgery.
- CT findings such as perigraft fluid and enhancement are indicative of bypass infection.
- DSA serves as a complementary tool for detecting specific vascular complications.