The intraobserver repeatability of pulsatility index measurements in 3 fetal vessels in the early weeks of gestation was evaluated.
The pulsatility index was calculated from the flow velocity waveforms from 3 fetal vessels in a series of 58 uneventful, low-risk, singleton first-trimester pregnancies using transvaginal color Doppler sonography. The intraobserver repeatability was expressed as the intraclass correlation coefficient. Mean menstrual age at the time of the examination was 10.3 weeks (range, 7.6-13).
Flow velocity waveforms from the umbilical artery, abdominal aorta, and middle cerebral artery were obtained in 100% (58/58), 98.3% (57/58), and 100% (34/34) of cases, respectively. The intraclass correlation coefficients for these vessels were 0.89, 0.79, and 0.93, respectively.
The intraobserver repeatability was acceptable for all the vessels studied.
CITAÇÃO DO ARTIGO J Clin Ultrasound. 1997 Sep;25(7):366-71
A Clínica é o hospital privado com maiores recursos tecnológicos de Espanha, tudo num único centro.
Os profissionais da Clínica realizam um trabalho contínuo de investigação e formação, sempre em benefício do paciente.
Conheça porque é que somos diferentes em relação a outros centros sanitários. Qualidade, rapidez, comodidade e resultados.