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What is Sigmoid Volvulus?

Nicole Madison
Updated Mar 03, 2024
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Sigmoid volvulus is a condition that affects a person's bowel and causes intestinal obstruction. When someone has this condition, the ending part of the large bowel, called the sigmoid colon, twists abnormally and causes a blockage. There are other types of volvulus, but this type is considered the most common.

This condition tends to be more common among elderly people and those who have chronic conditions. It may also make a more frequent appearance in nursing homes and mental institutions, but it is not limited to people who fit this demographic. Sigmoid volvulus may be seen in children, usually those under 10, as well as in men and women of all ages. It is more common in males than females. Patients with sigmoid volvulus usually suffer from chronic constipation, which can cause the sigmoid colon to lengthen abnormally.

Sometimes the type of chronic constipation that leads to sigmoid volvulus may be caused by anti-psychotic medications that are prescribed to people dealing with mental illness. In countries in which people are commonly infested with worms in their digestive tracts, the condition is thought to affect people, at least in part, because of the heavy weight of the worms in the bowel. Some ethnic groups tend to be more likely to develop sigmoid volvulus than others. For example, native Africans and Asians are more likely to have this condition, as are people from South America. In these countries, most people consume diets that are very high in roughage, and these high-fiber diets contribute to the development of longer sigmoid colons.

The symptoms of sigmoid volvulus include pain in the abdomen, bloating and constipation. This constipation isn't the typical sort that leaves the patient with difficulty in producing a bowel movement, however. Instead, it typically leaves the patient unable to have a bowel movement at all. Some people may also experience nausea; when vomiting occurs, it typically happens in the latter stages of the condition. Additionally, fever may develop, especially if the bowel has been perforated because of the condition.

Unfortunately, sigmoid volvulus can be fatal if left untreated or caught too late. Gangrene, a condition marked by tissue death, can set in if the condition isn't treated promptly. Treatment may include using special medical equipment to pass through the area where the sigmoid and rectum meet, freeing the obstruction and leading to the untwisting of the bowel. In other cases, doctors may free the obstruction and then trim the excessive size of the sigmoid colon.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Nicole Madison
By Nicole Madison
Nicole Madison's love for learning inspires her work as a The Health Board writer, where she focuses on topics like homeschooling, parenting, health, science, and business. Her passion for knowledge is evident in the well-researched and informative articles she authors. As a mother of four, Nicole balances work with quality family time activities such as reading, camping, and beach trips.
Discussion Comments
By anon935512 — On Feb 25, 2014

I was seeing my GP and a GI specialist about my symptoms. They both dismissed me and said take laxatives! After suffering for 3.5 years I drove myself to emergency and the following morning, had a sigmoid resection! Talk about neglect!

By Sinbad — On Sep 30, 2011

Sigmoid volvulus sounds like a horrible condition! That is even more horrible that depending on where you live and what food you have access to you are basically destined to get it.

If I were constipated more than a couple days, I think I would make an appointment with my doctor right away, especially after reading this article! It is sad though for people in other countries that probably don't get alarmed when they are constipated because everyone else around them probably is most of the same time!

I hope that the people that are susceptible to it, like elderly, mentally/chronically ill, and people from other countries, know about this now, before it is too late! It would be horrible enough to suffer a long time with sigmoid volvulus, but even worse if this went untreated and ended up with something as fatal as gangrene!

The methods of fixing seem like a pretty simple/normal procedure for doctors to do, I wonder how high the success rate for this procedure is? Hopefully one hundred percent!

Nicole Madison
Nicole Madison
Nicole Madison's love for learning inspires her work as a The Health Board writer, where she focuses on topics like...
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