Clinical Research Directory

Ketamine for Post-operative Analgesia in Hemorrhoidectomy

This is a prospective, randomized study of ketamine versus no ketamine in approximately 100 patients undergoing hemorrhoidectomy for Grade III or IV hemorrhoids. The participants will be blinded to which treatment arm they are assigned, because participants will be under anesthesia when the ketamine is administered. The investigators will know whether the participant receives ketamine or not.

PUSHES (Pudendal Block Versus Sacral ESP Hemorrhoidectomy Study)

The goal of this clinical trial is to learn if the sacral erector spinae plane block can provide equal or better pain control than the pudendal nerve block in adults undergoing hemorrhoid surgery. The main question is: Which block offers more effective analgesia and faster recovery?

Botulinum Toxin A Before Hemorrhoidectomy to Prevent Postoperative Pain

Hemorrhoidectomy is an effective surgical treatment for advanced hemorrhoidal disease but is often associated with significant postoperative pain, which may delay recovery. One of the main contributors to pain after hemorrhoidectomy is spasm and increased tone of the internal anal sphincter. This randomized, double-blind, placebo-controlled clinical trial evaluates whether preoperative injection of botulinum toxin type A into the internal anal sphincter, performed seven days before hemorrhoidectomy, can reduce postoperative pain compared with placebo. Adult patients with grade III-IV hemorrhoids scheduled for excisional hemorrhoidectomy will be randomized to receive either botulinum toxin A or saline injection prior to surgery. Postoperative pain intensity, analgesic consumption, complications, functional outcomes, and patient satisfaction will be assessed during the first 30 days after surgery.

Comparison of the Clinical Effects of Open, Closed, and Semi-close Hemorrhoidectomy.

This study compares three different ways surgeons close the wound after removing hemorrhoids (piles): leaving it completely open, stitching it completely closed, or stitching only half of it closed (semi-closed). The goal is to see which method leads to faster healing, less pain, fewer complications, and better long-term results. Patients undergoing hemorrhoidectomy will be randomly assigned to one of the three groups. All patients will receive standard post-operative care. Researchers will measure healing time, pain levels, need for pain medication, hospital stay, complications, and check if hemorrhoids come back within one year.

HEMOVAR Study on Hemorrhoids and Varicose Veins

The HEMOVAR Study is a prospective observational study designed to evaluate the association between hemorrhoidal disease and lower extremity varicose veins. A total of 400 adult patients presenting to the general surgery proctology outpatient clinic of Aydın Adnan Menderes University Hospital will be included. The study will consist of two groups: 200 patients diagnosed with hemorrhoids and 200 patients with other non-hemorrhoidal benign proctologic conditions serving as controls. All participants will undergo routine clinical evaluation and demographic data collection. Cardiovascular surgeons will voluntarily perform physical examination and Doppler ultrasonography of the lower extremities to assess venous insufficiency and varicose veins. No experimental intervention or treatment will be applied. The study will not require any consumable materials and will not impose any additional financial burden on the hospital, patients, or the national health insurance system. The primary outcome is the prevalence of lower extremity venous insufficiency in patients with hemorrhoids compared with controls.

Evaluation of Superior Rectal Arterial Embolization in Hemorrhoidal Disease

SRAE is a promising treatment of bleeding HD as a minimally invasive approach without sphincter damage nor direct mucosal anorectal trauma. Feasibility, efficacy and safety were studied in several trials. A randomized controlled study should confirm the benefits of this technique and will define its therapeutic role in HD. Embolization and DG-HAL are based on the same concept of vascular occlusion of hemorrhoidal branches of the rectal artery. Furthermore, DG-HAL and RBL are equally effective procedures. The assumption is that treatment with SRAE is not inferior in comparison to RBL or DG HAL in respectively patients without or with antiplatelet/anticoagulation therapy in terms of symptom control and bleeding (non-inferiority study).

Ultrasound-guided Sacral Erector Spinae Plane Block as a Sole Anesthetic Technique Versus Saddle Block in Hemorrhoidectomy

Study interventions: The patients will be randomized into two equal groups, Group A and Group B. Group A: Patients will receive an Ultrasound guided sacral erector spinae plane block (SESPB) Group B: Patients will receive Saddle block. The surgical procedure will be performed by an experienced surgeon. The outcome: The primary outcome will be assessment of pain intensity using the NRS ranging from 0 (no pain) to 10 (worst pain) at 0, 2, 4, 6, 12, and 24 hours after the procedure. The secondary outcomes will include the cumulative doses of tramadol (50 mg intramuscular) to be repeated every 8 hours in case NRS score is more than four, the number of patients requiring rescue medication in the postoperative period.

Comparison of Clinical Effects Between Routine and High-frequency Follow-up After Hemorrhoids Surgery

This study aims to investigate whether frequent follow-ups can enhance the quality of life of patients after hemorrhoid surgery and reduce the incidence of complications. A total of 116 eligible patients were randomly and evenly divided into two groups (58 patients in each group): A. The control group: Patients received routine health education services upon discharge and were then followed up by phone at the regular frequency. B. The high-frequency group: Patients received routine health education services upon discharge and were then followed up by phone at a higher frequency. The quality of life of the patients and the incidence of complications were compared to evaluate the clinical effects of different intervention measures. The main hypothesis is that compared to conventional care, frequent follow-ups can significantly improve the quality of life of patients, promote wound healing, and reduce the incidence of complications and disease recurrence.

Trans-radial Superior Rectal Artery Embolisation for Haemorrhoids

Endovascular embolisation is already a common procedure for bleeding haemorrhoids in the acute setting, where surgical options are not possible or have been exhausted. This pilot study aims to add to the small body of evidence that transarterial embolisation of symptomatic haemorrhoids is also safe and effective in the elective setting, providing a good alternative to conventional surgical management. This is a day case procedure that is performed under local anaesthetic. For selected patients, this presents a less invasive management option with reduced potential morbidity. For a health care system under significant financial stress, this provides a potential means of cost improvement, the extent of which this study will try and quantify. A series of 20 selected patients will be recruited to undergo this procedure and then followed up for 24 months. The long-term goal of this pilot study is to form the basis of a national registry of such procedures.

Effect of Red and Blue Light Irradiation on Wound Healing After Hemorrhoid Surgery

The subjects of this study were patients who took mixed haemorrhoidectomy during the period of December 2024 - December 2025 . The haemorrhoidectomy patients were randomly divided into routine group, red light group and red and blue light group, and were given different ways of trauma care, and the number of cases in each group was 105 , with a total of 305 cases. Observe the difference between red and blue light irradiation and routine care on the healing time of postoperative trauma and postoperative complications after haemorrhoidectomy, and evaluate the patients' quality of life and satisfaction with treatment under both red light irradiation and routine care.

Evaluation of the Analgesic Efficacy of an Ultrasound-guided Transperineal Pudendal Block in Outpatient Hemorrhoidal Surgery

In a population of patients undergoing hemorrhoidal surgery under general anesthesia and divided into two equal groups based on the method used for intraoperative pudendal nerve block and its branches in the ischioanal fossa: Group 1: Pudendal block guided by neurostimulation Group 2: Pudendal block guided by ultrasound The primary objective of this study is to compare the maximum immediate postoperative pain score between the two groups (pain reported by the patients in the recovery room on a simple numeric scale before morphine titration).

SCI-Pex Study - Safety and Performance of PexyEazy®, a Device for Treatment of Hemorrhoids

The SCI-Pex study is a multicenter, prospective, non-controlled investigation on PexyEazy®, a new device for treatment of hemorrhoids based on the mucopexy method. Mucopexy is a well established method where sutures are applied above the hemorrhoids. When knots are tied, the hemorrhoids are lifted inwards to their normal position, which makes them swell down and symptoms disappears. PexyEazy® perform a mukopexy in a semiautomatic, faster and easier way on awake patient in less than 10 minutes. The SCI-Pex study will evaluate the safety and performance of PexyEazy on 35 patients with hemorrhoids grade II and III with a follow-up after 1 week, 3 months and 1 years. Adverse events, pain and other complications will be recorded, quality of life and hemorrhoid symptom questionnaires and clinical examination after 3 months and 1 year will be monitored to evaluate the result after a PexyEazy® procedure.

Comparison of the Clinical Efficacy and Safety of Endoscopic Superior Rectal Mucosal Ligation and Hemorrhoids Ligation

Endoscopic superior rectal mucosal ligation and hemorrhoids ligation are two types of endoscopic ligation, The aim of this study is to compare the clinical efficacy and safety of these two approaches.If you accept this study,you need to provide case information before the operation, complete the endoscopic treatment according to the routine colonoscopy procedure, and follow-up survey after the operation.

Hemorrhoidectomy Only Versus Hemorrhoidectomy With Lateral Internal Sphincterotomy

The aim of this study was to access the comparison of pain and complications after hemorrhoidectomy with or without lateral sphincterotomy.

Efficacy and Safety of RAdiofrequency Versus HAL- RAR DOppler in Hemorrhoidal Pathology

Haemorrhoids are composed of tissue rich in blood vessels and are present in all individuals inside the anus (internal haemorrhoids) or under the skin of the anus (external haemorrhoids). Haemorrhoidal disease (HD) occurs when haemorrhoids become troublesome and cause symptoms such as pain, bleeding, prolapse or oozing. In case of failure of medical treatment, instrumental procedures or extensive disease, surgical treatment can be considered. There are two classic surgical techniques. The first is the pedicle haemorrhoidectomy of the Milligan and Morgan type. The second classic surgical technique is the Longo stapled anopexy. Recently, less invasive surgical techniques such as arterial ligation (HAL, with or without Doppler) followed by recto-anal repair (RAR for "Recto Anal Repair") and sometimes associated with mucopexy, which allows the excess mucosa to be ligated and the muco-haemorrhoidal tissue to be fixed to the rectal wall, have developed. The use of radiofrequency current (Rafaelo technique) in the treatment of haemorrhoidal disease is an innovative technique of haemorrhoidal thermocoagulation. It is a mini-invasive technique, which can be performed under sedation or short general anaesthesia (GA), with little pain, allowing a rapid return to normal life and a short time off work. Although this technique is already used in other European countries: Poland, Germany, Belgium, Great Britain (UK), there is now a Polish, German, Spanish and English study in the process of publication. There have been no studies in France to evaluate this new technique and assess its good tolerance, the duration of work stoppage, the improvement in quality of life and the evaluation of its effectiveness.

RCT Comparing Conventional Haemorrhoidectomy With Laser Haemorrhoidoplasty

Haemorrhoids or piles are the most common colorectal condition in the local population. Patients often present with bleeding with bowel movement or anal discomfort, both of which causes significant anxiety and stress. For symptomatic sizeable piles, the treatment of choice still remains the conventional open excision (COH). However, this technique carries with it a significant risk of bleeding and pain immediately after the operation, leading to some period of discomfort for the patients. The laser haemorrhoidoplasty procedure (LAH) has been shown in preliminary studies to have less pain, and less complications compared to COH. This study aims to directly compare these two techniques in a local Asian population. The investigators would be conducting a single-centre RCT simultaneously comparing the conventional open Milligan-Morgan haemorrhoidectomy (COH) and the laser haemorrhoidoplasty procedure (LAH) for the treatment of symptomatic grade ll-lV haemorrhoids. Primary outcomes will be post-operative pain while secondary outcomes include post-operative bleeding, readmission and/or reoperations, haemorrhoid-related quality of life (QoL) results and recurrence of symptoms up to a year post procedure

Samples Procurement for Colorectal Cancer, Gastric Cancer, and Non-malignant Disease

The purposes of this study are to collect and store samples including blood, normal and tumor tissue from patients with colorectal cancer or gastric cancer, to collect and store samples including blood and/or normal gastrointestinal tissue (if available) from patients with non-malignant disease (including, but not limited to, inflammatory bowel disease (IBD), gastric ulcer, hemorrhoids or hernia), and to create a database for the collected samples and allow access to relevant clinical information for current and future protocols.