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Sildenafil increases uterine blood flow in nonpregnant nulliparous women. 2010

Sarah A Hale, and Cresta W Jones, and George Osol, and Adrienne Schonberg, and Gary J Badger, and Ira M Bernstein
Department of Obstetrics, Gynecology and Reproductive Sciences, University of Vermont, Burlington, Vermont 05405, USA.

This study investigated the effect of sildenafil on uterine volumetric blood flow (UVF) and vascular impedance in nonpregnant, nulliparous women. Fifteen women were randomized in a double-blind fashion to receive either placebo or sildenafil (25 or 100 mg) during the luteal phase of the menstrual cycle. Color Doppler ultrasound of both uterine arteries was performed at baseline and at 1 and 3 hours postdosing to calculate resistance index (RI) and UVF. Those who received sildenafil significantly increased UVF and decreased RI over the 3-hour monitoring period. When UVF responses to sildenafil were examined as a function of baseline UVF, a significant increase in UVF was observed in only those participants with higher baseline UVF. Overall, women in the luteal phase demonstrated a significant increase in UVF in response to sildenafil. However, this increase appears to be directly associated with basal UVF.

UI MeSH Term Description Entries
D008183 Luteal Phase The period in the MENSTRUAL CYCLE that follows OVULATION, characterized by the development of CORPUS LUTEUM, increase in PROGESTERONE production by the OVARY and secretion by the glandular epithelium of the ENDOMETRIUM. The luteal phase begins with ovulation and ends with the onset of MENSTRUATION. Menstrual Cycle, Luteal Phase,Menstrual Cycle, Secretory Phase,Menstrual Secretory Phase,Postovulatory Phase,Phase, Luteal,Phase, Postovulatory,Secretory Phase, Menstrual
D010726 Phosphodiesterase Inhibitors Compounds which inhibit or antagonize the biosynthesis or actions of phosphodiesterases. Phosphodiesterase Antagonists,Phosphodiesterase Inhibitor,Phosphoric Diester Hydrolase Inhibitors,Antiphosphodiesterases,Inhibitor, Phosphodiesterase
D010879 Piperazines Compounds that are derived from PIPERAZINE.
D011687 Purines A series of heterocyclic compounds that are variously substituted in nature and are known also as purine bases. They include ADENINE and GUANINE, constituents of nucleic acids, as well as many alkaloids such as CAFFEINE and THEOPHYLLINE. Uric acid is the metabolic end product of purine metabolism.
D012039 Regional Blood Flow The flow of BLOOD through or around an organ or region of the body. Blood Flow, Regional,Blood Flows, Regional,Flow, Regional Blood,Flows, Regional Blood,Regional Blood Flows
D005260 Female Females
D006439 Hemodynamics The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM. Hemodynamic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000068677 Sildenafil Citrate A PHOSPHODIESTERASE TYPE-5 INHIBITOR; VASODILATOR AGENT and UROLOGICAL AGENT that is used in the treatment of ERECTILE DYSFUNCTION and PRIMARY PULMONARY HYPERTENSION. 1-((3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo(4,3-d)pyrimidin-5-yl)-4-ethoxyphenyl)sulfonyl)-4-methylpiperazine citrate,Acetildenafil,Desmethyl Sildenafil,Desmethylsildenafil,Homosildenafil,Hydroxyhomosildenafil,NCX-911,Revatio,Sildenafil,Sildenafil Lactate,Sildenafil Nitrate,UK 92480-10,UK-92,480-10,Viagra,Citrate, Sildenafil,Lactate, Sildenafil,NCX 911,NCX911,Nitrate, Sildenafil,Sildenafil, Desmethyl,UK 92,480 10,UK 92480 10,UK 9248010
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths

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