Vasovagal reactions in CT colonography.
We describe the occurrence of vasovagal reaction in two patients who underwent CT colonography (CTC). The patients, asymptomatic, were submitted to CTC in one case after right colectomy and in one case for screening purposes. The vasovagal symptoms occurred after pneumocolon and acquisition in the prone decubitus, and included headache, hypotension, bradycardia, cold sweat and pallor, nausea, and diaphoresis. Abdominal pain was also referred. All symptoms resolved within 30 min to 3 h from their onset. In all cases the vasovagal reaction occurred after prone decubitus. CTC images showed a significant distension of the small bowel. Vasovagal reactions are potential complications of CTC.
Neri
Emanuele
E
Diagnostic and Interventional Radiology, Department of Oncology, Transplants and Advanced, Technologies in Medicine, University of Pisa, Via Roma 67, 56100, Pisa, Italy. neri@med.unipi.it
Caramella
Davide
D
Vannozzi
Francesca
F
Turini
Francesca
F
Cerri
Francesca
F
Bartolozzi
Carlo
C
D000328:Adult; D000368:Aged; D003106:Colon / Q000473:pathology; D023881:Colonography, Computed Tomographic / Q000009:adverse effects* / Q000379:methods*; D003113:Colonoscopy / Q000009:adverse effects; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000628:therapy; D004733:Enema; D005260:Female; D006801:Humans; D019462:Syncope, Vasovagal / Q000175:diagnosis / Q000209:etiology*; D013997:Time Factors; D016896:Treatment Outcome