Doppler ultrasonography Archives - Revista Brasileira de Ginecologia e Obstetrícia
Summary
Rev Bras Ginecol Obstet. 2017;39(9):464-470
To describe the blood flow velocities and impedance indices changes in the uterine arteries of leiomyomatous uteri using Doppler sonography.
This was a prospective, case-control study conducted on 140 premenopausal women with sonographic diagnosis of uterine leiomyoma and 140 premenopausal controls without leiomyomas. Pelvic sonography was performed to diagnose and characterize the leiomyomas. The hemodynamics of the ascending branches of both main uterine arteries was assessed by Doppler interrogation. Statistical analysis was performed mainly using non-parametric tests.
The median uterine volume of the subjects was 556 cm3, while that of the controls was 90.5 cm3 (p < 0.001). The mean peak systolic velocity (PSV), end-diastolic velocity (EDV), time-averaged maximum velocity (TAMX), time-averaged mean velocity (Tmean), acceleration time (AT), acceleration index (AI), diastolic/systolic ratio (DSR), diastolic average ratio (DAR), and inverse pulsatility index (PI) were significantly higher in the subjects (94.2 cm/s, 29.7 cm/s, 49.1 cm/s, 25.5 cm/s, 118 ms, 0.8, 0.3, 0.6, and 0.8 respectively) compared with the controls (54.2 cm/s, 7.7 cm/s, 20.0 cm/s, 10.0 cm/s, 92.0 ms, 0.6, 0.1, 0.4, and 0.4 respectively); p < 0.001 for all values. Conversely, the mean PI, resistivity index (RI), systolic/diastolic ratio (SDR) and impedance index (ImI) of the subjects (1.52, 0.70, 3.81, and 3.81 respectively) were significantly lower than those of the controls (2.38, 0.86, 7.23, and 7.24 respectively); p < 0.001 for all values.
There is a significantly increased perfusion of leiomyomatous uteri that is most likely due to uterine enlargement.
Summary
Rev Bras Ginecol Obstet. 2017;39(9):464-470
To describe the blood flow velocities and impedance indices changes in the uterine arteries of leiomyomatous uteri using Doppler sonography.
This was a prospective, case-control study conducted on 140 premenopausal women with sonographic diagnosis of uterine leiomyoma and 140 premenopausal controls without leiomyomas. Pelvic sonography was performed to diagnose and characterize the leiomyomas. The hemodynamics of the ascending branches of both main uterine arteries was assessed by Doppler interrogation. Statistical analysis was performed mainly using non-parametric tests.
The median uterine volume of the subjects was 556 cm3, while that of the controls was 90.5 cm3 (p < 0.001). The mean peak systolic velocity (PSV), end-diastolic velocity (EDV), time-averaged maximum velocity (TAMX), time-averaged mean velocity (Tmean), acceleration time (AT), acceleration index (AI), diastolic/systolic ratio (DSR), diastolic average ratio (DAR), and inverse pulsatility index (PI) were significantly higher in the subjects (94.2 cm/s, 29.7 cm/s, 49.1 cm/s, 25.5 cm/s, 118 ms, 0.8, 0.3, 0.6, and 0.8 respectively) compared with the controls (54.2 cm/s, 7.7 cm/s, 20.0 cm/s, 10.0 cm/s, 92.0 ms, 0.6, 0.1, 0.4, and 0.4 respectively); p < 0.001 for all values. Conversely, the mean PI, resistivity index (RI), systolic/diastolic ratio (SDR) and impedance index (ImI) of the subjects (1.52, 0.70, 3.81, and 3.81 respectively) were significantly lower than those of the controls (2.38, 0.86, 7.23, and 7.24 respectively); p < 0.001 for all values.
There is a significantly increased perfusion of leiomyomatous uteri that is most likely due to uterine enlargement.
Summary
Rev Bras Ginecol Obstet. 2002;24(7):485-489
DOI 10.1590/S0100-72032002000700009
The most frequently nontrophoblastic tumor of the placenta found is chorioangioma, with an incidence of about 1%. When they are small, they do not significantly affect the fetus, but the large ones can cause intrauterine growth restriction, polyhydramnios, premature delivery, congestive heart failure and fetal death. The authors report a case of chorioangioma in a 28-year-old woman, second gestation, whose diagnosis was established at the 32nd week by ultrasound and confirmed by the anatomopathological examination. Ultrasonography evaluations showed chronic fetal distress and the delivery was performed at 36 weeks. The newborn results were satisfactory with Apgar 9-10 and fetal weight 2.460 g.
Summary
Rev Bras Ginecol Obstet. 2002;24(7):485-489
DOI 10.1590/S0100-72032002000700009
The most frequently nontrophoblastic tumor of the placenta found is chorioangioma, with an incidence of about 1%. When they are small, they do not significantly affect the fetus, but the large ones can cause intrauterine growth restriction, polyhydramnios, premature delivery, congestive heart failure and fetal death. The authors report a case of chorioangioma in a 28-year-old woman, second gestation, whose diagnosis was established at the 32nd week by ultrasound and confirmed by the anatomopathological examination. Ultrasonography evaluations showed chronic fetal distress and the delivery was performed at 36 weeks. The newborn results were satisfactory with Apgar 9-10 and fetal weight 2.460 g.
Summary
Rev Bras Ginecol Obstet. 2002;24(5):329-334
DOI 10.1590/S0100-72032002000500007
Purpose: to evaluate the effect of total abdominal hysterectomy on ovarian blood supply in women in reproductive age, using transvaginal color Doppler. Methods: a prospective study was carried out on 61 40-year-old or younger women. They were divided into two groups: G1, 31 patients submitted to hysterectomy, and G2, 30 normal women. Criteria of inclusion: normal ovarian function at baseline, normal body weight, without expasure to tobacco, no history of laparotomy or ovarian pathology. The pulsatility index (PI) of ovarian arteries determined by Doppler and the transvaginal ultrasonographic measurement of the ovarian volume were performed at three moments: baseline, 6 and 12 months. Results: at baseline the groups were homogeneous. In the hysterectomized group, with 6 and 12 months, increase of the volume of the ovaries and decrease of PI (p<0,05) were observed. At the end of the study, 25.5% (8/31) of the hysterectomized patients presented benign ovarian cysts. In the control group no alteration of the parameters was observed. Conclusion: The decrease of PI by Doppler of ovarian arteries suggests increased ovarian blood supply after total abdominal hysterectomy in women in reproductive age.
Summary
Rev Bras Ginecol Obstet. 2002;24(5):329-334
DOI 10.1590/S0100-72032002000500007
Purpose: to evaluate the effect of total abdominal hysterectomy on ovarian blood supply in women in reproductive age, using transvaginal color Doppler. Methods: a prospective study was carried out on 61 40-year-old or younger women. They were divided into two groups: G1, 31 patients submitted to hysterectomy, and G2, 30 normal women. Criteria of inclusion: normal ovarian function at baseline, normal body weight, without expasure to tobacco, no history of laparotomy or ovarian pathology. The pulsatility index (PI) of ovarian arteries determined by Doppler and the transvaginal ultrasonographic measurement of the ovarian volume were performed at three moments: baseline, 6 and 12 months. Results: at baseline the groups were homogeneous. In the hysterectomized group, with 6 and 12 months, increase of the volume of the ovaries and decrease of PI (p<0,05) were observed. At the end of the study, 25.5% (8/31) of the hysterectomized patients presented benign ovarian cysts. In the control group no alteration of the parameters was observed. Conclusion: The decrease of PI by Doppler of ovarian arteries suggests increased ovarian blood supply after total abdominal hysterectomy in women in reproductive age.
Summary
Rev Bras Ginecol Obstet. 2002;24(3):153-160
DOI 10.1590/S0100-72032002000300002
Purpose: to study the fetal hemodynamic profile in high-risk pregnancy and correlate it with perinatal results. Methods: transverse prospective study of 108 patients of the Obstetric Clinic of the Hospital das Clínicas, São Paulo University School of Medicine. The patients were evaluated at the Fetal Surveillance Unit, and Doppler examinations of umbilical, aorta, middle cerebral artery, inferior vena cava and ductus venosus were performed. The criteria for inclusion were patients whose delivery was in the next 24 hours after evaluation. Twin pregnancies and fetal malformations were excluded. Results: the hemodynamic implications in the fetal circulation were demonstrated by changes in the Doppler ultrasonographic results in the umbilical artery, aorta, middle cerebral artery, ductus venosus and in the inferior vena cava. The Doppler examinations were abnormal in the umbilical artery (25.9%), fetal aorta (24%), middle cerebral artery (34.2%), ductus venosus (18.2%) and inferior vena cava (46,6%). Segments of the fetal circulation which best correlated with the perinatal results were the umbilical artery and the ductus venosus. The abnormal results in the umbilical artery were significantly associated with 1st minute Apgar score <7 in 42.8% and need of neonatal intensive care unit in 50% of the cases. The abnormal results in the ductus venosus Doppler ultrasonography showed statistical association with 1st minute Apgar score <7 (52.6%), 5th min Apgar <7 (15.7%), acidemia at birth (60%), need of neonatal intensive care unit (52.6%) and neonatal death (21.1%). The predictive values of the ductus venosus Doppler for fetal acidemia were: sensitivity of 39.1; specificity of 90.4; positive predictive value of 60.0 and negative predictive value of 80.2. Conclusion: the Doppler ultrasonography allowed us to evaluate the fetal hemodynamics in the most varied situations and the study of the venous duct is an important examination in the evaluation of fetal hemodynamic response to hypoxia.
Summary
Rev Bras Ginecol Obstet. 2002;24(3):153-160
DOI 10.1590/S0100-72032002000300002
Purpose: to study the fetal hemodynamic profile in high-risk pregnancy and correlate it with perinatal results. Methods: transverse prospective study of 108 patients of the Obstetric Clinic of the Hospital das Clínicas, São Paulo University School of Medicine. The patients were evaluated at the Fetal Surveillance Unit, and Doppler examinations of umbilical, aorta, middle cerebral artery, inferior vena cava and ductus venosus were performed. The criteria for inclusion were patients whose delivery was in the next 24 hours after evaluation. Twin pregnancies and fetal malformations were excluded. Results: the hemodynamic implications in the fetal circulation were demonstrated by changes in the Doppler ultrasonographic results in the umbilical artery, aorta, middle cerebral artery, ductus venosus and in the inferior vena cava. The Doppler examinations were abnormal in the umbilical artery (25.9%), fetal aorta (24%), middle cerebral artery (34.2%), ductus venosus (18.2%) and inferior vena cava (46,6%). Segments of the fetal circulation which best correlated with the perinatal results were the umbilical artery and the ductus venosus. The abnormal results in the umbilical artery were significantly associated with 1st minute Apgar score <7 in 42.8% and need of neonatal intensive care unit in 50% of the cases. The abnormal results in the ductus venosus Doppler ultrasonography showed statistical association with 1st minute Apgar score <7 (52.6%), 5th min Apgar <7 (15.7%), acidemia at birth (60%), need of neonatal intensive care unit (52.6%) and neonatal death (21.1%). The predictive values of the ductus venosus Doppler for fetal acidemia were: sensitivity of 39.1; specificity of 90.4; positive predictive value of 60.0 and negative predictive value of 80.2. Conclusion: the Doppler ultrasonography allowed us to evaluate the fetal hemodynamics in the most varied situations and the study of the venous duct is an important examination in the evaluation of fetal hemodynamic response to hypoxia.