Granisetron Use, Blood Pressure, and Nausea and Vomiting During Cesarean Delivery Under Spinal Anesthesia
Effects of Granisetron Administered After Spinal Anesthesia on Intraoperative Hemodynamics and Nausea and Vomiting in Cesarean Deliveries: A Prospective Observational Study
This study will observe 80 adults having a cesarean delivery under spinal anesthesia at Kayseri City Hospital. It will compare patients who receive granisetron as part of routine care to prevent nausea and vomiting with patients who do not receive preventive anti-nausea medicine. Granisetron use is decided by the treating anesthesiologist, not assigned by the study. Patients in the granisetron group receive the medicine within 5 minutes before or after spinal anesthesia. The main measurement is the total dose of ephedrine used during the operation. Ephedrine is a medicine used to treat low blood pressure. The study will also record low blood pressure at scheduled measurement points and nausea and vomiting during the operation. Patient enrollment is planned from October 15 to December 15, 2026.
연구 개요
상태
상태
정황
정황
개입 / 치료
개입 / 치료
상세 설명
This single-center prospective observational cohort study will be conducted in the Department of Anesthesiology and Reanimation at Kayseri City Hospital. The planned sample comprises 80 consenting pregnant adults with singleton pregnancies and American Society of Anesthesiologists physical status II undergoing cesarean delivery under spinal anesthesia, with a target of 40 participants in each exposure group.
Anesthetic technique, antiemetic prophylaxis, fluid management, and treatment of hypotension remain at the discretion of the treating anesthesiologist as part of routine clinical care. No drug or treatment is assigned by the research protocol. The granisetron-exposed group comprises patients receiving prophylactic intravenous granisetron within the interval from 5 minutes before to 5 minutes after spinal anesthesia. The comparison group comprises patients receiving no prophylactic antiemetic. Rescue antiemetic treatment is recorded separately from prophylaxis. Granisetron dose and timing and other medications are recorded. Apfel scores are not collected.
Systolic, diastolic, and mean arterial pressure, heart rate, and oxygen saturation are recorded at baseline; 0, 2, 5, 10, 15, 20, 25, 30, 45, and 60 minutes after spinal anesthesia while surgery is ongoing; at delivery of the baby; and at the end of surgery. Hypotension is evaluated as the number of recorded intraoperative measurement points with mean arterial pressure below 65 mmHg and, separately, systolic arterial pressure below 90 mmHg. These measures are counts of low-pressure measurement points, not estimates of time spent hypotensive.
The primary outcome is the cumulative intraoperative ephedrine dose in milligrams. Other recorded data include intraoperative nausea and vomiting, rescue antiemetic use, bradycardia, other vasopressors, spinal anesthetic and opioid doses, sensory block level, demographic and obstetric characteristics, surgical times, fluid administration, and estimated blood loss. Observation is limited to the intraoperative period.
The sample size calculation described in the protocol is based on a published between-group difference in total ephedrine consumption, with an effect size of approximately 0.91, two-sided alpha of 0.05, and 95% power. The target was increased from 66 to 80 participants to allow for missing data. Continuous variables will be compared using a t-test or Mann-Whitney U test as appropriate, and categorical variables using a chi-square or Fisher exact test. Potential confounding may be assessed using multivariable regression.
연구 유형
연구 유형
등록 (추정된)
등록
연락처 및 위치
연구 연락처
연구 연락처
- 이름: Salih Gale, MD
- 전화번호: +90 5372065999
- 이메일: salihgale@gmail.com
연구 장소
-
-
-
Kayseri, 터키 (Türkiye), 38080
- Kayseri City Hospital
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연락하다:
- Salih Gale, MD
- 전화번호: +90 5372065999
- 이메일: salihgale@gmail.com
-
-
참여기준
자격 기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
샘플링 방법
연구 인구
Adults with singleton pregnancies and ASA physical status II undergoing elective or emergency cesarean delivery under spinal anesthesia at Kayseri City Hospital between October 15 and December 15, 2026. Patients are observed according to routine clinical care, with no study-assigned treatment. The target sample is 80 participants: 40 receiving prophylactic intravenous granisetron within 5 minutes before or after spinal anesthesia and 40 receiving no prophylactic antiemetic.
설명
Inclusion Criteria:
- Pregnant women aged 18 years or older with a singleton pregnancy.
- American Society of Anesthesiologists (ASA) physical status II.
- Elective or emergency cesarean delivery under spinal anesthesia at Kayseri City Hospital.
- Written informed consent to participate.
- Routine intraoperative monitoring and a prophylactic antiemetic decision made independently by the treating anesthesiologist.
Exclusion Criteria:
- Age below 18 years.
- Cesarean delivery performed under general or epidural anesthesia, or intraoperative conversion from spinal to general anesthesia.
- Multiple pregnancy.
- Serious cardiovascular disease, severe arrhythmia, or advanced heart failure.
- Severe preeclampsia, eclampsia, or HELLP syndrome.
- Known allergy to 5-HT3 receptor antagonists.
- Massive intraoperative bleeding or blood transfusion.
- Refusal to participate or absence of written informed consent.
- Missing intraoperative hemodynamic measurements or other required study data.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 관찰 모델: COHORT
- 시간 관점: PROSPECTIVE
그룹/코호트 수
코호트 및 개입
그룹/코호트그룹/코호트 |
개입 / 치료개입 / 치료 |
|---|---|
|
Prophylactic Granisetron
Patients who receive prophylactic intravenous granisetron within 5 minutes before or 5 minutes after spinal anesthesia as part of routine clinical care for cesarean delivery. The decision to administer granisetron and its dose are determined by the treating anesthesiologist independently of study participation. The dose and administration time are recorded. The target group size is 40 participants. |
Prophylactic intravenous granisetron administered during routine clinical care within 5 minutes before or 5 minutes after spinal anesthesia for cesarean delivery. The decision to use granisetron and the dose are determined by the treating anesthesiologist independently of this observational study. Actual dose and administration timing are recorded; no study-mandated dosing is imposed. |
|
No Prophylactic Antiemetic
Patients undergoing cesarean delivery under spinal anesthesia who receive no prophylactic antiemetic as part of routine clinical care. Prophylaxis decisions are made by the treating anesthesiologist independently of study participation. Rescue antiemetic medication may be administered when clinically indicated and is recorded separately; rescue treatment does not redefine the initial prophylaxis group. The target group size is 40 participants. |
연구는 무엇을 측정합니까?
주요 결과 측정
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
Total Intraoperative Ephedrine Dose
기간: Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
Cumulative dose of ephedrine administered to each participant during the intraoperative period, expressed in milligrams. All intraoperative ephedrine administrations are summed. Participants who receive no ephedrine have a total dose of 0 mg. |
Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
2차 결과 측정
2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
Number of Intraoperative Measurement Points With Mean Arterial Pressure Below 65 mmHg
기간: Scheduled intraoperative assessments from spinal anesthesia administration to the end of surgery.
|
For each participant, the number of scheduled intraoperative blood pressure measurement points at which mean arterial pressure is below 65 mmHg. Measurements are recorded at 0, 2, 5, 10, 15, 20, 25, 30, 45, and 60 minutes after spinal anesthesia while surgery is ongoing, at delivery of the baby, and at the end of surgery. This outcome is a count of low-pressure measurement points and is not a duration in minutes. |
Scheduled intraoperative assessments from spinal anesthesia administration to the end of surgery.
|
|
Number of Intraoperative Measurement Points With Systolic Arterial Pressure Below 90 mmHg
기간: Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
For each participant, the number of scheduled intraoperative blood pressure measurement points at which systolic arterial pressure is below 90 mmHg. Measurements are recorded at 0, 2, 5, 10, 15, 20, 25, 30, 45, and 60 minutes after spinal anesthesia while surgery is ongoing, at delivery of the baby, and at the end of surgery. This outcome is a count of low-pressure measurement points and is not a duration in minutes. |
Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
|
Incidence of Intraoperative Nausea
기간: Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
Percentage of participants with at least one episode of nausea during the intraoperative period, based on the intraoperative case report form. |
Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
|
Incidence of Intraoperative Vomiting
기간: Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
Percentage of participants with at least one episode of vomiting during the intraoperative period, based on the intraoperative case report form. |
Throughout the intraoperative period, from spinal anesthesia administration to the end of surgery.
|
공동 작업자 및 조사자
수사관
수사관
- 수석 연구원: Salih Gale, MD, Kayseri City Hospital
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
연구 시작
기본 완료 (추정된)
기본 완료
연구 완료 (추정된)
연구 완료
연구 등록 날짜
최초 제출
최초 제출
QC 기준을 충족하는 최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
처음 게시됨
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
마지막 업데이트 게시됨
QC 기준을 충족하는 마지막 업데이트 제출
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
기타 연구 ID 번호
- KCH-GRAN-2026-1120
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
IPD 계획 설명
A decision about sharing individual participant data has not yet been made.
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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