*** Advancements in Peritoneal Dialysis Catheterization: Introducing a Modified Single-Port Laparoscopic Technique *** 
Authors: YutingFu，ZhimianMa，Junli，JifangMa，ManshuSui，MingaoWang
Department of Nephrology &  Department of Endoscopic Oncology Surgery, First Affiliated Hospital of Harbin Medical University
Department of Internal Medicine, Northeast Forestry University Hospital 

Corresponding author: MingaoWang

Contact Information: 

winnie_lxf@163.com

Department of Nephrology, First Affiliated Hospital of Harbin Medical University
Harbin,Heilongjiang 150001,China

***General Introduction***
This dataset contains the complete anonymised clinical and operative records of a single-centre, retrospective, two-arm cohort study conducted at the Department of Nephrology, First Affiliated Hospital of Harbin Medical University, China. 

The study compared a modified single-port laparoscopic (SLC) versus conventional open surgical (OSC) peritoneal-dialysis (PD) catheter insertion technique in adults with end-stage renal disease (ESRD). 

Study population and inclusion/exclusion criteria
Consecutive patients ≥ 18 years who received their first PD catheter between March 2023 and September 2023 were screened. Inclusion: ESRD scheduled for first PD catheter. Exclusion: severe cardiopulmonary dysfunction, pregnancy, abdominal-wall defects, active intra-abdominal infection/mass, or other surgical contraindications (e.g. severe psychiatric disorder). Thirty eligible patients were enrolled and followed until September 2024 (minimum follow-up 12 months). 

***Interventions***
1.Single-port laparoscopic catheterization (n = 15): under general anaesthesia a 1.5 cm infra-umbilical incision created pneumoperitoneum (12 mmHg). A 10 mm trocar served as camera port; a 5 mm trocar was introduced through the same skin incision. A 6–7 cm oblique sub-muscular tunnel to the pelvis was fashioned under direct vision; the catheter was pulled into the peritoneal cavity with a 10-0 prolene suture and positioned in the Douglas pouch. 
2. Open surgical catheterization (n = 15): performed under local anaesthesia through a 3–4 cm paramedian incision 9–10 cm above the pubic symphysis; catheter inserted over a guidewire into the Douglas pouch, deep and superficial cuffs placed in standard fashion. 

***Post-operative protocol ***
Low-volume peritoneal lavage (1 L) on post-operative days 1–2; if no leak or bleeding, dialysis commenced on day 3 (1 L exchanges), increased to 2 L after two weeks. 

***Data structure ***
The  original data file contains all the clinical and operative records including:
1. baseline – sex, age, BMI, primary renal disease, prior abdominal surgery history, pre-operative haemoglobin, serum albumin, creatinine, serum electrolyte levels, A Lkaline Phosphatase, Parathyroid Hormone. 
2. operative time (min), skin-incision length (cm), estimated blood loss (mL), 24 h post-op pain score (0–10 numeric rating scale), post-operative hospital stay (days), total hospitalisation cost (CNY). 
3. follow-up, complications and outcomes – catheter dysfunction (displacement, obstruction, omental wrap), dialysate leak, bloody effluent, visceral injury, hernia, pleuroperitoneal fistula, exit-site/tunnel infection, peritonitis, date of catheter removal (if applicable), reason for removal, death date (if applicable), last follow-up date. 

The surgical procedure diagram file contains photographs of key surgical steps.

***Analysis notes*** 
Normality was assessed with Shapiro–Wilk tests; means ± SD vs median [P25, P75] reported accordingly. Between-group comparisons used Student t, Mann–Whitney U, or χ² tests. One-year catheter survival was plotted with Kaplan–Meier curves and log-rank test (SPSS 25.0). Significance threshold p < 0.05. 

***Reuse guidance***
Users can reproduce analyses by merging files on the unique anonymous patient ID. The study adheres to the Declaration of Helsinki and Chinese regulatory requirements; no participant-identifiable information is present.
