University of Michigan Summary: A carbon-nanotube-coated lens that converts light to sound can focus high-pressure sound waves to finer points than ever before. The engineering researchers who developed the new therapeutic ultrasound approach say it could lead to an invisible knife for noninvasive surgery. The University of Michigan engineering researchers who developed the new therapeutic ultrasound approach say it could lead to an invisible knife for noninvasive surgery. Doctors routinely use focused sound waves to blast apart kidney stones and prostate tumors, for example. The tools work primarily by focusing sound waves tightly enough to generate heat, says Jay Guo, a professor of electrical engineering and computer science, mechanical engineering, and macromolecular science and engineering.
There are two prostate et constipation internal hemorrhoids insidewhich develop below the lining of the lower rectum, and external hemorrhoids outside which develop beneath the skin around the anus. Hemorrhoids affect both men and women, and while most cases are present in those between 45 and 65 years of age, hemorrhoids can affect people of all ages.
Causes and Risk Factors Hemorrhoids can be caused by increased pressure in the abdomen which causes veins near the anus and rectum to swell.
This kind of pressure can be caused by: Chronic constipation or diarrhea; Straining during defecation this may cause a prolapsed hemorrhoid ; Pregnancy and childbirth; Sitting on the toilet for long periods; Obesity; Anal intercourse. Symptoms The symptoms of internal hemorrhoids vary from person-to-person, but most commonly include rectal bleeding typically painless and protrusion of the hemorrhoid during bowel movements.
If completely prolapsed, hemorrhoids can cause severe pain and often cannot be pushed back inside by the patient. Stool softeners may also be recommended for these purposes.
You can also reduce pressure on the veins by avoiding long periods of standing and sitting including on the toilet. Refrain from straining or holding your breath when having a bowel nașterea cu prostatită to reduce pressure in the veins.
Going to the washroom when you feel the urge can prostate et constipation help to reduce the need for straining. Treatment Hemorrhoids are not life-threatening, but can reoccur repeatedly if the underlying cause is not treated.
Symptoms typically subside within a few days without medical intervention; however, oral and topical medications such as pills, suppositories, creams or gels can be used to help alleviate some of the pain and discomfort. Soaking in sitz baths after a bowel movement may also help to reduce pain. It is recommended to use moist toilettes or toilet paper perfume and alcohol free to prevent further irritation from occurring when cleaning the anal area.
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For severe cases, internal hemorrhoids may require in-office or surgical therapies, including: Rubber-Band Ligation for grade III hemorrhoids ; Infrared Coagulation IRC ; Sclerotherapy; Hemorrhoidectomy surgical removal of hemorrhoids. Surgical removal of hemorrhoids will only be considered in very severe cases when other treatment options have failed.
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June Mayo Clinic.