Clinical Research Directory
Browse clinical research sites, groups, and studies.
High-Intensity, Low-Frequency Periodic rTMS Over the Right Dorsolateral Prefrontal Cortex on Cardiac Autonomic Regulation in Women With Recurrent Pregnancy Loss and Anxiety
Sponsor: Shenyang Medical College
Summary
The goal of this clinical trial is to determine whether high-intensity, low-frequency periodic repetitive transcranial magnetic stimulation (rTMS) applied to the right dorsolateral prefrontal cortex (DLPFC) can modulate cardiac autonomic regulation in women with recurrent pregnancy loss (RPL) and comorbid anxiety. The main questions it aims to answer are: Does 120% resting motor threshold (RMT) rhythmic low-frequency rTMS reduce heart rate during stimulation time windows compared with sham stimulation? Does 120% RMT rTMS alter heart-rate-variability (HRV) spectral power at the target frequency (0.0167 Hz) compared with sham stimulation? Researchers will compare active rTMS with sham rTMS to determine whether the active intervention produces measurable changes in cardiac autonomic activity. Participants will: Undergo a single session of rTMS or sham stimulation consisting of 20 consecutive stimulation time windows (each 60 seconds: 40 seconds of 1-Hz stimulation plus 20 seconds of rest) targeting the right DLPFC; Have continuous electrocardiography (ECG) recordings collected during the entire stimulation session; Complete clinical and psychiatric assessments before participation.
Official title: Effects of High-Intensity, Low-Frequency Periodic rTMS Over the Right Dorsolateral Prefrontal Cortex on Cardiac Autonomic Regulation in Women With Recurrent Pregnancy Loss and Anxiety: A Randomized, Sham-Controlled, Proof-of-Concept Trial (NEURO-CARD-rTMS-2)
Key Details
Gender
FEMALE
Age Range
18 Years - 45 Years
Study Type
INTERVENTIONAL
Enrollment
46
Start Date
2025-11-20
Completion Date
2026-04-20
Last Updated
2025-11-18
Healthy Volunteers
No
Conditions
Interventions
Rhythmic repetitive transcranial magnetic stimulation (rTMS) at 120% RMT, 1 Hz, 60-s cycles
Participants in the real rTMS group will receive rhythmic low-frequency repetitive transcranial magnetic stimulation (rTMS) applied over the right dorsolateral prefrontal cortex (DLPFC). The intervention consists of 20 consecutive stimulation cycles, each comprising 40 seconds of 1 Hz stimulation followed by a 20-second inter-cycle interval, totaling 60 seconds per cycle. The stimulation intensity is set at 120% of the individual's resting motor threshold (RMT). A figure-of-eight coil will be positioned tangentially over the scalp at the targeted right DLPFC site. Electrocardiogram (ECG) signals will be recorded synchronously throughout the session for heart rate variability analysis.
Locations (1)
Central Hospital Affiliated to Shenyang Medical Collage
Shenyang, Liaoning, China