Clinical outcome after a negative spiral CT pulmonary angiographic finding in an inpatient population from cardiology and pneumology wards.
STUDY OBJECTIVES: The purpose of this study was to assess the clinical follow-up of a negative spiral CT ( SCT) angiographic finding after a suspicion of acute pulmonary embolism (PE) in a population of inpatients with cardiac and/or respiratory disease. In this high-risk population, clinical findings suggestive of PE are frequently misleading. DESIGN: One hundred seventy-five consecutive patients hospitalized in cardiac and pneumology wards underwent SCT angiography for suspected PE over a 30-month period. Angiographic findings were positive in one third. For the 117 patients with negative SCT angiographic findings, a clinical follow-up during a minimum of 6 months was assessed, particularly in relation to recurrent thromboembolism, mortality, and cause of death. RESULTS: The mean +/- SD follow-up was 21 +/- 11.5 months, and five patients were unavailable for follow-up. Of the 117 patients with negative findings, 81 patients did not receive anticoagulant therapy and 46 patients received anticoagulation for cardiac disease or deep venous thrombosis. Twenty-two patients died during the follow-up period, 3 of them during the first 3 months following the initial event from an undetermined cause. In patients still alive, a new PE occurred in two cases. Patients with a poor cardiopulmonary reserve did not present any recurrent events. In this population, tests other than imaging (d-dimers, cardiac echocardiography, or venous ultrasound) contributed little to eliminate the diagnosis of PE. CONCLUSIONS: Whether or not early deaths are considered or not to be related to a recurrent PE, the rate of recurrence after a negative SCT angiographic finding varied between 1.8% and 4.9%. SCT angiography can be used confidently to rule out significant PE, and may prevent further investigations and unnecessary treatment in an inpatient population with cardiac and/or respiratory diseases.[1]References
- Clinical outcome after a negative spiral CT pulmonary angiographic finding in an inpatient population from cardiology and pneumology wards. Bourriot, K., Couffinhal, T., Bernard, V., Montaudon, M., Bonnet, J., Laurent, F. Chest (2003) [Pubmed]
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