Does adjusting the dose of spinal anaesthetic for patient height improve the reliability of spinal anaesthesia?

Not Applicable

• Conditions: Spinal anaesthesia for elective Caesarean section; Pregnancy and Childbirth

• Registration Number: ISRCTN13247823
• Lead Sponsor: County Durham and Darlington NHS Foundation Trust

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2023-02-22
• Last Update Posted: 13 March 2023
• Study Completion: 2024-11-01

Recruitment & Eligibility

• Status: Ongoing
• Sex: Female
• Target Recruitment: 200

Inclusion Criteria

1. Height of = 150cm and = 160cm or = 165cm and = 175cm (rounded to nearest cm)
2. Elective Caesarean section
3. Singleton pregnancy
4. Gestation 36 weeks or greater
5. American Society of Anesthesiologists (ASA) physical status II (appendix 6) with the exception for term BMI = 40
6. No known foetal abnormalities

Exclusion Criteria

1. Height < 150 cm (rounded to nearest cm)
2. Height > 175 cm (rounded to nearest cm)
3. Height = 161 cm and = 164 cm (rounded to nearest cm).
4. Age < 18 years
5. Known or anticipated difficult airway
6. Term BMI > 50
7. Anterior or posterior placenta praevia
8. ASA physical status III or greater (appendix 6) with the exception for term BMI = 40
9. Patients with pre -existing (essential) hypertension or pregnancy –induced hypertension
10. Contraindication or refusal for spinal anaesthesia
11. Any neurological disease
12. Any spinal cord abnormality
13. Any vertebral column abnormality, such as scoliosis
14. Congenital or acquired short limbs or any other lower limb abnormality causing a reduction in height
15. Patients receiving any medications affecting the cardiovascular system
16. Any additional surgery planned (with the exception of bilateral tubal ligation)
17. Pre-existing major abdominal pathology (fibroids, significant ovarian cyst)
18. Known allergy to bupivacaine, fentanyl or morphine
19. Patients under the care of His Majesty’s Prison
20. Patients who lack capacity
21. Patients who require an interpreter for communication

Study & Design

• Study Type: Interventional
• Study Design: Not specified