What this phase means
This study does not use the classic phase 1–4 drug ladder. It may be a device, a behavior program, a surgery timing study, or an early feasibility test.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Ultrasound-Guided Serratus Posterior Superior Intercostal Plane Block, or Ultrasound-Guided Pectoral Nerve Block Type II. The registry lists allocation as randomized. This study compares two ultrasound-guided nerve block techniques for pain control after mastectomy for breast cancer: the pectoral nerve block (PECS II) and the serratus posterior superior intercostal plane (SPSIP) block.
They plan to enroll about 78 people at Nilufer. Taking part typically means study visits and measurements plus check-ins.
Official title (unrewritten)
Comparison of the Effects of Pectoral Nerve Block and Serratus Posterior Superior Intercostal Plane Block on Acute and Persistent Postoperative Pain After Mastectomy: A Prospective, Double-Blind, Randomized Controlled Trial
Interventions: Ultrasound-Guided Serratus Posterior Superior Intercostal Plane Block, Ultrasound-Guided Pectoral Nerve Block Type II
Primary outcome (registry wording): Postoperative Opioid Consumption