Transanal haemorrhoidal dearterialisation (THD) or haemorrhoidal artery ligation (HALO) is an operation to reduce the blood flow to your haemorrhoids.

It’s usually carried out under general anaesthetic and involves inserting a small device, which has a Doppler¬† probe attached, into your anus. This probe produces high-frequency sound waves that allow the surgeon to locate the blood vessels in and around your anal canal. These blood vessels supply blood to the haemorrhoid.

Each blood vessel is then stitched closed, to block the blood supply to the haemorrhoid. This causes the haemorrhoid to shrink over the following days and weeks. The stitches can also be used to reduce prolapsing haemorrhoids (haemorrhoids that hang down from the anus).

The National Institute for Health and Care Excellence (NICE) recommends this treatment as an effective alternative to a haemorrhoidectomy or stapled haemorrhoidopexy (see below). The procedure causes less pain and, in terms of results, a high level of satisfaction has been reported. Most people are able to return to their normal activities much sooner than with other surgical procedures.

There is a low risk of bleeding, pain when passing stools or the haemorrhoid becoming prolapsed after this procedure, but these usually improve within a few weeks.

Haemorrhoidal artery ligation procedure with rectoanal rectopexy is routinely undertaken for bleeding and prolapsing piles. It is less invasive and recovery is quick. However recurrence rates are marginally higher than open haemorrhoidectomy.

Acknowledgement NHS choices

Weblink: http://www.nhs.uk/Conditions/Haemorrhoids/Pages/Surgery.aspx


https://www.youtube.com/watch?v=Z1uevY765cM[/youtube]Transanal haemorrhoidal dearterialisation (THD) or haemorrhoidal artery ligation (HALO)