IRCT20250630066304N8 IRCT 2026-10-12 Mazandaran University of Medical Sciences Intravenous lidocaine for shivering after spinal anesthesia Studying the effect of intravenous lidocaine on reducing shivering after spinal anesthesia in cesarean section patients referred to Imam Khomeini Hospital in Sari A double-blind clinical trial 2026-10-23 anticipated 60 Recruiting https://irct.ir/trial/93916 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Prevention, Randomization description: A computer-generated randomization sequence is going to be prepared using IBM SPSS Statistics to allocate participants to the two study groups, Blinding description: The study solutions will be prepared in identical volumes and coded to conceal treatment allocation. Participants and outcome assessors will remain unaware of group assignments. The severity of post-spinal shivering and other study outcomes will be assessed at the prespecified time points. Group codes will remain concealed until data collection and statistical analysis are completed. If emergency unblinding is required for patient safety, it will be performed according to the study protocol. 3 Shivering after Spinal Anesthesia. Intervention 1: Intervention group: Intravenous lidocaine at 1 mg/kg body weight. Intervention 2: Control group: An equivalent volume of placebo (normal saline). Yes - There is a plan to make this available What will be shared: Individual participant data, including demographic and clinical characteristics, post-spinal anesthesia shivering severity, hemodynamic parameters, body temperature, sedation level, and the incidence of nausea and vomiting in patients undergoing cesarean section. Data will be stored confidentially using coded identifiers. When: Data will be made available upon reasonable request after completion of the study and publication of the main results, subject to ethical and confidentiality requirements. The availability period will follow the university’s research data retention policies. To whom: Qualified researchers and members of the scientific community with a valid research request may request access to the data, subject to participant confidentiality requirements. Conditions: Data may be used only for valid scientific and research purposes in accordance with research ethics principles. Use is subject to approval of the request, protection of participant confidentiality, and a prohibition on attempts to re-identify participants. Where to obtain: The data may be requested from the principal investigator or research team at Imam Khomeini Hospital, Sari, Iran. How to obtain: A written request should describe the research objectives, proposed use of the data, and measures to protect confidentiality. The request will be reviewed by the principal investigator and, where necessary, the relevant research or ethics authorities. Access will be granted only after approval and agreement to comply with confidentiality requirements. Comments: