Hypertension Clinical Trial
To elucidate the role of an imbalance in vasodilator prostacyclin (PGI2) and vasoconstrictor thromboxane (TxA2) in pregnancy-induced hypertension
BACKGROUND:
Pregnancy-induced hypertension (PIH) is associated with increased fetal and neonatal
morbidity and mortality possibly resulting from hypoxia in utero. The primary pathology of
PIH involves a reduction in uteroplacental blood flow but modern imaging techniques have now
shown that increased impedance of the fetal-placental circulation and hence reduced blood
flow can also be found in PIH. This may represent a direct effect of hypoxia or be a fetal
adaptation to increase placental oxygen extraction to relieve hypoxia. The fetal-placental
circulation is regulated by humoral agents and vascular pressure. An imbalance of
vasodilator prostacyclin (PGI2) and vasoconstrictor thromboxane (TxA2) production is
reported to underlie the vasoconstriction seen in PIH.
The study resulted from the 1986 release of a Request for Applications for Research on
Hypertension in Pregnancy by the National Heart, Lung, and Blood Institute and the National
Institute of Child Health and Human Development.
DESIGN NARRATIVE:
The fetal-placental circulations of perfused human placental cotyledons from normotensive
and pregnancy-induced hypertensive pregnancies were used to determine if an imbalance in
PGI2/TxA2 production existed and its relationship to the responses of the fetal-placental
circulation to vasoconstriction. Studies were also conducted on the effects of hypocalcemia
and hypomagnesemia, hypoxia, and drugs.
The study completion date listed in this record was obtained from the "End Date" entered in
the Protocol Registration and Results System (PRS) record.
;
N/A
| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Terminated |
NCT04591808 -
Efficacy and Safety of Atorvastatin + Perindopril Fixed-Dose Combination S05167 in Adult Patients With Arterial Hypertension and Dyslipidemia
|
Phase 3 | |
| Recruiting |
NCT04515303 -
Digital Intervention Participation in DASH
|
||
| Completed |
NCT05433233 -
Effects of Lifestyle Walking on Blood Pressure in Older Adults With Hypertension
|
N/A | |
| Completed |
NCT05491642 -
A Study in Male and Female Participants (After Menopause) With Mild to Moderate High Blood Pressure to Learn How Safe the Study Treatment BAY3283142 is, How it Affects the Body and How it Moves Into, Through and Out of the Body After Taking Single and Multiple Doses
|
Phase 1 | |
| Completed |
NCT03093532 -
A Hypertension Emergency Department Intervention Aimed at Decreasing Disparities
|
N/A | |
| Completed |
NCT04507867 -
Effect of a NSS to Reduce Complications in Patients With Covid-19 and Comorbidities in Stage III
|
N/A | |
| Completed |
NCT05529147 -
The Effects of Medication Induced Blood Pressure Reduction on Cerebral Hemodynamics in Hypertensive Frail Elderly
|
||
| Recruiting |
NCT05976230 -
Special Drug Use Surveillance of Entresto Tablets (Hypertension)
|
||
| Recruiting |
NCT06363097 -
Urinary Uromodulin, Dietary Sodium Intake and Ambulatory Blood Pressure in Patients With Chronic Kidney Disease
|
||
| Completed |
NCT06008015 -
A Study to Evaluate the Pharmacokinetics and the Safety After Administration of "BR1015" and Co-administration of "BR1015-1" and "BR1015-2" Under Fed Conditions in Healthy Volunteers
|
Phase 1 | |
| Completed |
NCT05387174 -
Nursing Intervention in Two Risk Factors of the Metabolic Syndrome and Quality of Life in the Climacteric Period
|
N/A | |
| Completed |
NCT04082585 -
Total Health Improvement Program Research Project
|
||
| Recruiting |
NCT05121337 -
Groceries for Black Residents of Boston to Stop Hypertension Among Adults Without Treated Hypertension
|
N/A | |
| Withdrawn |
NCT04922424 -
Mechanisms and Interventions to Address Cardiovascular Risk of Gender-affirming Hormone Therapy in Trans Men
|
Phase 1 | |
| Active, not recruiting |
NCT05062161 -
Sleep Duration and Blood Pressure During Sleep
|
N/A | |
| Completed |
NCT05087290 -
LOnger-term Effects of COVID-19 INfection on Blood Vessels And Blood pRessure (LOCHINVAR)
|
||
| Not yet recruiting |
NCT05038774 -
Educational Intervention for Hypertension Management
|
N/A | |
| Completed |
NCT05621694 -
Exploring Oxytocin Response to Meditative Movement
|
N/A | |
| Completed |
NCT05688917 -
Green Coffee Effect on Metabolic Syndrome
|
N/A | |
| Recruiting |
NCT05575453 -
OPTIMA-BP: Empowering PaTients in MAnaging Blood Pressure
|
N/A |