Marcos Felipe - Academia.edu (original) (raw)
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Graduate Center of the City University of New York
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Papers by Marcos Felipe
Medicine, 2015
Thrombotic risk is associated with the estrogen dose and type of progestin in combined oral contr... more Thrombotic risk is associated with the estrogen dose and type of progestin in combined oral contraceptives. Studies published since 1990 showed that third-generation progestins have larger risk to contribute to thrombosis development than the second-generation. However, there are conflicts in the literature regarding the thrombotic risk associated to the drospirenone progestin. So, this study aimed to evaluate the effects of 3 formulations of contraceptives containing ethinylestradiol (EE) (20 and 30 μg) combined with drospirenone versus levonorgestrel combined with EE (30 μg) in hemostatic parameters.This cross-sectional study included 70 healthy women between 18 and 30 years, BMI 19 to 30 kg/m, not pregnant, non-smokers, and users or non-users (control) of contraceptives for a minimum period of 6 months. The following parameters were assessed: prothrombin time (PT), Factor VII, activated partial thromboplastin time (aPTT), Factor XII, fibrinogen, Factor 1 + 2, Protein C, Protein S...
Maturitas, 2004
Objective: To monitor the effects of raloxifene therapy on the uterus of postmenopausal women by ... more Objective: To monitor the effects of raloxifene therapy on the uterus of postmenopausal women by transvaginal ultrasonography and color flow Doppler. Methods: Twenty-five healthy postmenopausal women were enrolled in this prospective longitudinal study performed at Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto. The patients were treated with raloxifene hydrochloride (60 mg per day) for 6 months. All were submitted to transvaginal ultrasound examination with color flow Doppler (ATL-HDI 3000 equipment) before the beginning and after 1, 3 and 6 months of treatment. Resistance index (RI) and pulsatility index (PI) of the uterine arteries were determined by the Doppler method, being considered as indicators of uterine perfusion. The following variables were analyzed: endometrial thickness, uterine volume, RI, and PI. Data were analyzed statistically by repeated-measures analysis of variance. Results: Before treatment, endometrial thickness was 3.38 ± 0.73 mm, and similar values were observed after 1, 3 and 6 months of treatment (3.04 ± 0.82; 3.3 ± 0.83; and 3.37 ± 0.79, respectively) (P > 0.05). No significant differences in uterine volume were observed between the pre-and post-treatment periods. Uterine artery perfusion as indicated by RI and PI measured by Doppler also showed no significant variation, with a high impedance flow being maintained throughout treatment. Conclusions: In the group studied here, raloxifene treatment at the dose of 60 mg per day for 6 months did not induce significant changes in endometrial thickness, uterine volume or uterine artery perfusion, confirming that short-term raloxifene treatment does not affect the uterus of postmenopausal women.
Medicine, 2015
Thrombotic risk is associated with the estrogen dose and type of progestin in combined oral contr... more Thrombotic risk is associated with the estrogen dose and type of progestin in combined oral contraceptives. Studies published since 1990 showed that third-generation progestins have larger risk to contribute to thrombosis development than the second-generation. However, there are conflicts in the literature regarding the thrombotic risk associated to the drospirenone progestin. So, this study aimed to evaluate the effects of 3 formulations of contraceptives containing ethinylestradiol (EE) (20 and 30 μg) combined with drospirenone versus levonorgestrel combined with EE (30 μg) in hemostatic parameters.This cross-sectional study included 70 healthy women between 18 and 30 years, BMI 19 to 30 kg/m, not pregnant, non-smokers, and users or non-users (control) of contraceptives for a minimum period of 6 months. The following parameters were assessed: prothrombin time (PT), Factor VII, activated partial thromboplastin time (aPTT), Factor XII, fibrinogen, Factor 1 + 2, Protein C, Protein S...
Maturitas, 2004
Objective: To monitor the effects of raloxifene therapy on the uterus of postmenopausal women by ... more Objective: To monitor the effects of raloxifene therapy on the uterus of postmenopausal women by transvaginal ultrasonography and color flow Doppler. Methods: Twenty-five healthy postmenopausal women were enrolled in this prospective longitudinal study performed at Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto. The patients were treated with raloxifene hydrochloride (60 mg per day) for 6 months. All were submitted to transvaginal ultrasound examination with color flow Doppler (ATL-HDI 3000 equipment) before the beginning and after 1, 3 and 6 months of treatment. Resistance index (RI) and pulsatility index (PI) of the uterine arteries were determined by the Doppler method, being considered as indicators of uterine perfusion. The following variables were analyzed: endometrial thickness, uterine volume, RI, and PI. Data were analyzed statistically by repeated-measures analysis of variance. Results: Before treatment, endometrial thickness was 3.38 ± 0.73 mm, and similar values were observed after 1, 3 and 6 months of treatment (3.04 ± 0.82; 3.3 ± 0.83; and 3.37 ± 0.79, respectively) (P > 0.05). No significant differences in uterine volume were observed between the pre-and post-treatment periods. Uterine artery perfusion as indicated by RI and PI measured by Doppler also showed no significant variation, with a high impedance flow being maintained throughout treatment. Conclusions: In the group studied here, raloxifene treatment at the dose of 60 mg per day for 6 months did not induce significant changes in endometrial thickness, uterine volume or uterine artery perfusion, confirming that short-term raloxifene treatment does not affect the uterus of postmenopausal women.