title: Vasoreactivity of the radial artery after transradial catheterization.
abstract: The vasomotor response was used to assess the degree of radial artery injury after transradial catheterization. Vasoreactivity was studied by ultrasound before catheterization, 24 hours after, at 1 week and at 1 month in 18 patients. Mean radial artery diameter increased from 2.56+/-0.45 mm before catheterization to 2.86+/-0.48 mm at 24 hours (p=0.001) and returned to baseline values at 1-month (2.60+/-0.27 mm; p=0.95). Hyperemia-induced vasodilation did not change significantly (2.7+/-4.7% at baseline; 3.4+/-3.7% at 24 hours, 3.5+/-3.9% at 1 week and 4.8+/-4.7% at 1 month; p=0.59). Nitroglycerin-induced vasodilation was significantly attenuated at 24 hours (from 14.1+/-7.9% at baseline to 6.5+/-8.4% at 24 hours; p=0.01), but improved after 1 week (9.8+/-8.5%; p=0.1, compared to baseline) and after 1 month (13.0+/-8.9%; p=0.51, compared to baseline). Thus, soon after transradial catheterization vasoreactivity is impaired, but generally recovers as early as 1 month after the procedure.
authors.affiliation: Unidad Hemodinamica, Meixoeiro s/n, Vigo, Pontevedra, 36200, Spain. msanmartin@tiscali.es.
authors.forename: Marcelo
authors.initials: M
authors.lastname: Sanmartin
authors.forename: Javier
authors.initials: J
authors.lastname: Goicolea
authors.forename: Raymundo
authors.initials: R
authors.lastname: Ocaranza
authors.forename: Diogenes
authors.initials: D
authors.lastname: Cuevas
authors.forename: Francisco
authors.initials: F
authors.lastname: Calvo
mesh_terms: D000368:Aged; D000704:Analysis of Variance; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000379:methods; D006328:Cardiac Catheterization / Q000009:adverse effects* / Q000379:methods*; D003327:Coronary Disease / Q000175:diagnosis / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011336:Probability; D011446:Prospective Studies; D017534:Radial Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D018570:Risk Assessment; D012494:Sampling Studies; D018608:Ultrasonography, Doppler; D014654:Vascular Patency / Q000502:physiology; D014661:Vasoconstriction / Q000502:physiology; D014664:Vasodilation / Q000502:physiology