Video education group: In addition to routine care, patients received a researcher-developed video-based education program two days before surgery via WhatsApp or email. The video (5-10 minutes) included information on the perioperative process, nutrition, and postoperative care, supported by visual and audio narration to enhance understanding. Adherence was confirmed via telephone contact one day before surgery. Baseline assessments, outcome measures, and follow-up procedures were identical to those in the control group.

Control Arm (Routine Care): Baseline data, including sociodemographic and clinical characteristics, were collected preoperatively. Surgical fear was assessed at 3 and 1 days prior to surgery. All patients received routine verbal preoperative education three days before surgery, covering general information about bariatric surgery, the perioperative process, and postoperative care. Postoperative outcomes included recovery quality (QoR-15 on postoperative days 1 and 7), pain intensity (VAS on postoperative days 1, 3, and 7), daily pain recording after analgesic administration, additional analgesic use, and satisfaction with education (postoperative day 7). Patients received standard perioperative clinical follow-up.

A preoperative information video specific to bariatric surgery has been prepared.

It was used to determine the levels of fear in patients before surgery.

Quality of Recovery-15 (QoR-15): This scale evaluates five areas-emotional status, physical comfort, psychological support, physical independence, and pain-to assess patients' postoperative surgical recovery.

Visual analog scale: It was used to measure the postoperative pain levels of patients.