title: Intracoronary positive and negative contrast jets at a 'napkin ring' coronary stenosis: a case report.
abstract: A very short coronary stenosis is somewhat difficult to correctly evaluate by conventional coronary angiography. The demonstration of positive and negative contrast jets observed just distal to the lesion is helpful in identifying the severity of the disease causing this disorder. In the present case, intravascular ultrasound confirmed the presence of a very short stenosis and membranous disease at the site of the lesion. The presence of intracoronary contrast jets reflects the morphology and severity of disease of the membranous type, although the reason for the appearance of contrast jets with this type of lesion should be sought.
authors.affiliation: Cardiology Division of Medicine, National Cardiovascular Center, Osaka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ito
authors.forename: A
authors.initials: A
authors.lastname: Taguchi
authors.forename: N
authors.initials: N
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Okumura
authors.forename: N
authors.initials: N
authors.lastname: Nagaya
authors.forename: K
authors.initials: K
authors.lastname: Hirooka
authors.forename: M
authors.initials: M
authors.lastname: Yamagishi
mesh_terms: D003287:Contrast Media / Q000008:administration & dosage; D017023:Coronary Angiography; D003327:Coronary Disease / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D018084:Ultrasonography, Interventional
chemical_list: D003287:Contrast Media