Bleeding in Laser Haemorrhoidoplasty

Overview

Treatment options for haemorrhoid can be classified mainly into lifestyle modification, medical and procedural. Laser haemorrhoidoplasty (LHP) is a minimally invasive procedure which is effective in treating grade 2-4 haemorrhoids. However, one of the significant complications is post-operative bleeding. Some surgeons supplemented haemorrhoidal artery ligation (HAL) to help minimize post-operative bleeding, however, its effectiveness has not been formally evaluated. This study aims to compare the effectiveness of supplementation of HAL to LHP in reducing the incidence of post-operative bleeding. It was hypothesize that supplementation of HAL to LHP is not effective in reducing the post-operative bleeding incidence and is unnecessary. The study was designed as a double-blind, randomized controlled trial involving 78 patients who underwent laser haemorrhoidoplasty in Universiti Malaya Medical Centre, Malaysia from November 2016 to October 2018. The study compared the post-operative bleeding incidence of laser haemorrhoidoplasty (LHP) only (n=38) versus laser haemorrhoidoplasty with haemorrhoidal artery ligation (LHP + HAL) (n=38). Assessment of bleeding using verbal rating scale (VRS) and Clavien-Dindo score is made at post-operative 24 hours, one week and six weeks. Pain score, the presence of perianal swelling and operation time were documented.

Symptomatic haemorrhoids is a very common condition. The exact number of haemorrhoid sufferers is difficult to estimate because many do not seek medical help and rely on over the counter medications. Treatment options for haemorrhoids can be largely classified into lifestyle modification, medical and procedural. Procedural treatment can be further classified into excisional (involves excision of tissue) and non-excisional. Many procedures have been described and there is a preference for minimally invasive procedures and to avoid excisional procedures currently as they cause significantly more pain. Furthermore, many studies have shown that the post-operative complication rates and recurrence rates are relatively low for non-excisional procedures. In recent years, LHP had been introduced. It is an example of non-excisonal procedure for haemorrhoid. The delivery of laser energy to the anal cushion results in inflammation and scarring, which leads to contraction and fixation of haemorrhoids. The potential advantage of this procedure is less pain, as it does not involve. excision or passage of suture. Nevertheless, one of the post-operative conditions observed after LHP is bleeding. As this is a rather new procedure, there are limited studies conducted and the incidence of post-operative bleeding for laser haemorrhoidoplasty is not reported. To overcome this, some surgeons supplement haemorrhoidal artery ligation to laser haemorrhoidoplasty to minimize the incidence of post-operative bleeding, of which its effectiveness has not been formally evaluated. Moreover, the reported incidence of post-operative bleeding for HAL is 19-22%. In our institution experience, the post-operative bleeding rate for LHP is 1-2%. Therefore, the investigators hypothesize that supplementation of HAL to LHP is not effective in reducing the post-operative bleeding incidence and is unnecessary. This is an interventional study and is designed as a double-blinded randomized controlled trial to look into the post-operative bleeding incidence of patients undergoing LHP only versus LHP + HAL in UMMC. The study commenced in November 2016 and completed recruitment in October 2018. To show the effectiveness of supplementation of HAL to LHP in reducing the post-operative bleeding incidence, the investigators needed to study 35 experimental subjects and 35 control subjects to be able to reject the null hypothesis that the failure rate for experimental and control subjects are equal with probability (power) 0.8. The Type I error probability associated with this test of this null hypothesis is 0.05. When a 10% dropout rate was factored in, the investigators needed 38 subjects in each arm. The investigators will use an uncorrected chi-squared statistic to evaluate this null hypothesis. Randomization in blocks of four was used to assign the LHP only group and LHP + HAL group. Each procedure after randomized was placed in an individually numbered envelope. Prior to the start of operation, the operating surgeon randomly selects one envelop. All patients had general anaesthesia or regional anaesthesia. A standard dose of Intravenous Cefoperazone 2 gm and Intravenous Metronidazole 500 mg was given. Post-operatively, all subjects were given tablet Paracetamol 1 gm six hourly and Capsule Celecoxib 200 mg 12 hourly as pain control for five days. They were given Syrup Lactulose 15 cc 12 hourly for one week to prevent constipation. Subjects were discharged on the same day or one day after surgery. All patients were assessed in the clinic by a nurse/medical officer blinded to the type of procedure performed on post-operative 24 hours, one week and six weeks. There were a total of 76 patients recruited for this study.