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 | Balloon angioplasty has become a standard treatment for coronary artery disease, especially in the setting of a heart attack. Metal stents are commonly placed in the diseased portion of the coronary artery after balloon angioplasty to prevent the coronary artery from re-occluding. However, metal stents are also prone to a process called in-stent restenosis, where inflammatory tissue resembling a scar forms within the metal stent. Coronary artery stents are made of stainless steel, which contain nickel. Given that nickel allergy and in-stent restenosis are both very common, there is concern that nickel allergy might predispose to in-stent restenosis. Find out if people with nickel allergy should receive coronary artery stents. |
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Coronary Artery Stents and Nickel Allergy
Coronary artery disease is the leading cause of death in the United States. Balloon angioplasty has become a standard treatment for unstable coronary artery disease, especially in the setting of an acute heart attack, and is performed millions of times a year worldwide. Metal stents are commonly placed in the diseased portion of the coronary artery after balloon angioplasty to prevent the coronary artery from re-occluding. Unfortunately, metal stents are also prone to a process called in-stent restenosis, where inflammatory tissue resembling a scar forms within the metal stent, and can result in symptoms of worsening coronary artery disease. In-stent restenosis occurs in approximately 10-15% of people receiving coronary artery stents. Read more
| All About Nickel Allergy
Nickel allergy is the most common form of allergic contact dermatitis. People who have nickel allergy often notice a dry or blistering itchy skin rash at the site of contact with various jewelry or other metallic items. For example, nickel allergy often causes itchy rashes on the earlobes from earrings, the neckline from a necklace, the wrist from a bracelet or wristwatch, or near the umbilicus ("belly-button") from a belt buckle or jeans rivet. More recently, there have been reports of cell phones causing facial rashes as a result of nickel allergy. Less commonly, nickel allergy causes a rash all over the body as a result of nickel being eaten and absorbed into the body. This has been reported to occur from orthodontic braces, tongue piercings, nickel leaching into food from old pots and pans, and even eating foods containing high amounts of nickel. Foods that contain high amounts of nickel include legumes, leafy green vegetables, and various nuts and seafood, but only cause problems in highly sensitive people with nickel allergy. Read more
| Contact Dermatitis
Contact dermatitis is an itchy, blistering skin rash typically caused by the direct contact of a substance with the skin. There are 2 types of contact dermatitis: irritant and allergic. This difference is often difficult to tell apart, and is not usually an important distinction to make. Contact dermatitis results in 5.7 million doctor visits each year in the United States, and all ages are affected. Females are slightly more commonly affected than males, and teenagers and middle-aged adults seems to be the most common age groups affected. ... Read more
| Sleep Apnea Can Affect Allergies and Asthma
Obstructive sleep apnea (OSA) is a condition which results from the collapsing of the tissues of the throat during sleeping, resulting in severe snoring and episodes of apnea (breathing stops... Read more
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