The effect of different time of administration ondansetron on the dose requirement of prophylactic phenylephrine for preventing spinal anesthesia induced in cesarean section

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2000029510

Enrollment

Unknown

Registered

2020-02-03

Start date

2020-02-17

Completion date

Unknown

Last updated

2020-02-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

hypotension

Interventions

group A:15 min before spinal injection

group B:5 min before spinal injection

group C:saline

Eligibility

Sex/Gender

Female

Age

18 Years to 40 Years

Inclusion criteria

Inclusion criteria: American Society of Anesthesiologists physical status I or II and singleton pregnancies at term ( >= 37weeks' gestation) scheduled for selective cesarean delivery were recruited in this study.

Exclusion criteria

Exclusion criteria: Exclusive criteria were as follows: contraindications to regional anesthesia, preeclampsia, diabetes, and any other coexisting maternal disease; active or early labor, ruptured membranes and placenta previa.

Design outcomes

Primary

Measure	Time frame
ED50 of preventing phenylephrine;	—

Countries

China

Contacts

Public ContactXiao Fei

Jiaxing University Affiliated Women and Children Hospital

13706597501@163.com+86 13706597501

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026