Health & Medicine - Posted by Jason Cody-Michigan State on Wednesday, June 23, 2010 15:02 - 2 Comments    
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Does hypertension influence bipolar severity?

There is a "large clinical relevance to the finding hypertension could be linked to the severity of bipolar disorder," according to new research. Understanding how bipolar disorder and cardio-metabolic conditions are linked could help physicians create more effective treatment options. (iStockphoto)

MICHIGAN STATE (US)—Nearly half of patients hospitalized with bipolar disorder may also suffer from hypertension, according to a new study. And the younger a person is diagnosed with the psychiatric condition, the more likely they are to develop high blood pressure.

The study analyzed 99 patients hospitalized for bipolar disorder, a condition sometimes called manic-depressive disorder and characterized by mood swings ranging from depression to mental hyperactivity known as mania.

“There is a large clinical relevance to the finding hypertension could be linked to the severity of bipolar disorders,” says Dale D’Mello, professor of psychiatry at Michigan State University.

“There is some similarity to the pathology of the two conditions; they both can be triggered by stress and are tied to the excretion of norepinephrine, a hormone affecting how the brain reacts to stress.”

While the connection between such disorders and cardio-metabolic conditions such as heart disease and diabetes has been established, D’Mello also discovered bipolar patients with high blood pressure suffered higher levels of mania.

Understanding how bipolar disorder and cardio-metabolic conditions are linked could help physicians create more effective treatment options.

“These findings show that we should look to treat hypertension more aggressively in bipolar patients,” D’Mello says.

“There also is some evidence hypertension may lead to brain lesions; diagnosing high blood pressure and treating it earlier may change the medical outcomes for people battling bipolar disorders.”

In addition, similar to how certain drugs such as lithium do not work as well in bipolar patients who are obese, different medications may be identified that work better.

D’Mello says the next step is to discover how hypertension and other cardio-metabolic disorders interact over the long term.

“Is this just a point of time comparison or an enduring concern? We need to follow people and look at mania ratings over a period of time and not just during a hospital stay.”

More news from Michigan State University: http://news.msu.edu/

2 Comments

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somnus_rationis
Jun 24, 2010 16:04

I sort of wish the article mentioned more about these patients medical histories and the factors the researchers controlled for. After all, weight gain is a side effect of the majority of medications prescribed for bipolar disorder (a notable exception I can think of is Topamax, which is currently part of an approved (?) combination drug for weight loss, there could be others I’m not aware of). So it’s plausible that the younger the patient was at the time of diagnosis, the longer they’ve been taking drugs to treat the condition, the more they weigh (or the longer they’ve been overweight and/or obese), which is a known risk factor for developing high blood pressure. Even if weight/BMI was controlled for, what about other factors, like other side effects of medications, both mental and physical, that lessen the likelihood of the patients engaging in regular exercise, since cardiovascular fitness, regardless of weight, also figures into hypertension risk? As it is, we are left to wonder more about study design and the validity of conclusions, rather than the questions these conclusions might raise about the connection between bipolar disorder and hypertension.

Richard
Jul 4, 2010 14:34

I was diagnosed with bi-polar and hypertension ten years ago. With weight control and exercise my BP stays under control. Twice in the last 5 yrs I have become overweight and immobile, increasing my BP. After being unable to tolerate BP meds, I was okay with it running 140/100 as long as I felt good. During the last 6 months I developed serious complications affecting all of my organs. My BP finally reached a breaking point of 176/116. Doctors dumped me like crazy because of my manic state. ER’s, when I complained about my problems (focusing on HBP), did nothing trying to discourage my visits. Finally an ER doctor took action. I have a master’s and had been researching. Together we came to conclusions. I had resistance HBP, he gave me an ARB and used his influence to set me up with a new doctor. Early on I had went through every possible drug for my bi-polar and nothing worked. I learned how to live without medication and excelled in my personal and professional life. I have only been taking the ARB’s one week. My BP is running very close to 120/80. My manic state has virtually disappeared. I hope no irreversible damage has been done to my eyes, kidneys, etc…. From my perspective, your accessment that people with bi-polar be agressively treated to control their blood pressure is right on. Every doctor needs to be aware of these findings. Thank you so much for the interest shown in helping people live quality lives.

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