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Showing posts with label Diabetes. Show all posts
Showing posts with label Diabetes. Show all posts

Diabetes Insipidus

Diabetes insipidus is a condition in which the kidneys are unable to conserve water.


Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body. For instance, the pancreas secretes insulin, which allows the body to regulate levels of sugar in the blood. The thyroid gets instructions from the pituitary to secrete hormones which determine the pace of chemical activity in the body (the more hormone in the bloodstream, the faster the chemical activity; the less hormone, the slower the activity).

Treatment :The cause of the underlying condition should be treated when possible.
Central diabetes insipidus may be controlled with vasopressin (desmopressin, DDAVP). You take vasopressin as either a nasal spray or tablets.

If nephrogenic DI is caused by medication (for example, lithium), stopping the medication may help restore normal kidney function. However, after many years of lithium use, the nephrogenic DI may be permanent.
Hereditary nephrogenic DI and lithium-induced nephrogenic DI are treated by drinking enough fluids to match urine output and with drugs that lower urine output. Drugs used to treat nephrogenic DI include:
  • Anti-inflammatory medication (indomethacin)
  • Diuretics (hydrochlorothiazide (HCTZ) and amiloride)

CausesDiabetes insipidus (DI) is an uncommon condition that occurs when the kidneys are unable to conserve water as they perform their function of filtering blood. The amount of water conserved is controlled by antidiuretic hormone (ADH), also called vasopressin.
ADH is a hormone produced in a region of the brain called the hypothalamus. It is then stored and released from the pituitary gland, a small gland at the base of the brain.
DI caused by a lack of ADH is called central diabetes insipidus. When DI is caused by a failure of the kidneys to respond to ADH, the condition is called nephrogenic diabetes insipidus.
Central diabetes insipidus is caused by damage to the hypothalamus or pituitary gland as a result of:
  • Head Injury
  • Infection
  • Surgery
  • Tumor
Nephrogenic DI involves a defect in the parts of the kidneys that reabsorb water back into the bloodstream. It occurs less often than central DI. Nephrogenic DI may occur as an inherited disorder in which male children receive the abnormal gene that causes the disease from their mothers.
Nephrogenic DI may also be caused by:
  • MRI of the head
  • Urinalysis
  • Urine output

Prognosis:The outcome depends on the underlying disorder. If treated, diabetes insipidus does not cause severe problems or reduce life expectancy.
Complications
If thirst mechanisms are normal and you drink enough fluids, there are no significant effects on body fluid or salt balance.
Not drinking enough fluids can lead to the following complications:

  • Dehydration
    • Dry skin
    • Dry mucus membranes
    • Fever
    • Rapid heart rate
    • Sunken appearance to eyes
    • Sunken fontanelles (soft spot) in infants
    • Unintentional weight loss

  • Electrolyte imbalance
    • Fatigue, lethargy
    • Headache
    • Irritability
    • Muscle pains
When to Contact a DoctorCall your health care provider if you develop symptoms of diabetes insipidus.If you have diabetes insipidus, contact your health care provider if frequent urination or extreme thirst return.

The information provided on this page should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions.
Call 911 for all medical emergencies. Links to other sites are provided for information only – they do not constitute endorsements of those other sites.

Organ Transplants: What You Need to Know

Hearing from your doctor that you need a transplant is overwhelming and difficult news. Also overwhelming can be your sudden need for information on organ transplants. This article will get you started on what you need to know.

Organ transplantation -- the surgical removal of a healthy organ from one person and then putting it into another person whose organ has failed or was injured -- is often lifesaving and gives the recipient a wonderful new lease on life.

But organ transplants are also major surgery and carry potential risks and drawbacks, such as the chance of organ rejection. That's precisely why you and your loved ones need to gather as much information on organ transplants as possible, and as soon as possible.

Organ Transplants: An Information Overview

In the United States, six types of organ transplants are now performed, according to the United Network for Organ Sharing (UNOS), a nonprofit organization in Richmond Va., which administers the country's only Organ Procurement and Transplantation Network, which includes the organ transplant waiting list.

Organ transplants include kidney, pancreas, liver, heart, lung, and intestine; sometimes "double" transplants are done, such as kidney/pancreas or heart/lung.

In 2005, there were 27,527 transplants done in the U.S., according to UNOS, a slight increase over the total for 2004, when there was 26,541. To date, most donor organs have come from the deceased rather than living donors. In 2005, for instance, 20,635 donors were deceased, while 6,892 were living.

Most common, typically, are kidney transplants; least common single-organ transplants are the intestines.

Organs are matched using several characteristics, including blood type and size of the organ needed. Also taken into account is how long someone has been on the waiting list and the distance between the donor and the potential recipient.

You Need an Organ Transplant: What's Next?

Once your doctor gives you the news, he or she will typically refer you to a transplant center.

You aren't bound to go to the recommended center, says Gigi Spicer, RN, director of the kidney transplant service for Henrico Doctors' Hospital in Richmond, Va. This is the point at which you as a potential transplant recipient have to become very proactive, even if you're still reeling from the news.

It's a mistake to give up and let your health care team make all the decisions, Spicer says. There are some things you can't control, but a surprising amount you can.

Start by searching for transplant centers by organ type, by state or by region by going to the UNOS web page. Click on "Resources" and then "Member Directory."

You can get specific reports on centers nationwide by visiting the web page of the Scientific Registry of Transplant Recipients' U.S. Transplant web site, which is maintained by the University of Michigan's Ann Arbor Research Collaborative for Health. Included in the reports are waiting times, number of living vs. deceased donors, survival rates, and other facts.

The statistics can get complicated, so asking your own doctor or the facility to help you interpret is advised.

Another way to stay in the game, says Spicer, is to educate yourself about your disease as much as you can and gather as much information on organ transplants as possible.

Getting on the Organ Transplant Waiting List

Your natural first question is, how do I get on the transplant waiting list? To get on the national list, UNOS tells potential recipients to contact the transplant hospital you and your doctor have decided on and ask for an appointment. You will be evaluated by the transplant team, which will take into account your medical history, current health status, and other variables to see if you are indeed a good candidate for the transplant.

Every transplant hospital has its own criteria for evaluation. UNOS has also developed guidelines. If the team accepts you as a candidate, it will add you to the national waiting list maintained by UNOS.

To find out if you are on the list, check with your transplant hospital. Written notices about who is on the waiting list are not sent by UNOS. According to UNOS, you may ask to be listed at more than one hospital, but be aware that individual hospitals can have their rules about that; be sure to ask.

UNOS keeps a running total of the transplant waiting lists in the entire nation, organ by organ, on its web site and updates it regularly. In March 2007, for instance, 95,563 were on the waiting list nationwide for organs of all types.

Organ Transplant Waiting Times, Policies, Procedures

The average wait time varies by organ, age, blood type, and other factors. For instance, waiting times can reach five or six years for candidates waiting for deceased kidney organ donors.

UNOS has an online database known as UNET, which collects, stores, and analyzes data on the patient waiting list, organ matching, and the transplants. All U.S. organ transplant programs as well as organ procurement organizations and tissue typing labs work together to share the organs. The database allows the facilities to register patients, match donated organs to patients on the transplant waiting list, and manage the data of transplant patients before and after the surgery.

More than 200 transplant hospitals operate in the U.S.

Recently, new federal rules that tighten standards for the centers have been announced and take effect in June 2007. Among other requirements, the centers will be required to perform an average of 10 transplants a year, with some exceptions allowed, to keep federal funding.

UNOS distributes the organs first locally. But if no match is found, the organ is offered to a good match regionally and then nationally, if necessary.

What Are Your Organ Donor Options?

You also may have a choice about whether the organ donor is deceased or living.

Living donors are arranged through the individual transplant centers, according to UNOS. Another option, if you need a kidney transplant, is to contact the National Kidney Foundation's National Donor Family Council.

Your living organ donor can be a spouse or other family member or an unrelated person such as a friend, Spicer says. The potential living donor's blood is tested to see if she is compatible with the recipient.

But even if the blood types are not compatible, you may be able to find a program that allows proxy donors. This is when someone who doesn't match the intended donor can still donate the organ for someone else's use, and the intended donor goes to the top of the transplant list. The concept is fairly new.

Those who need a transplant often ask if they can buy an organ. The answer is simple: No. In the United States, it is a felony to buy an organ.

Though other countries allow the sale of organs, a physician practicing in the U.S. would not place that organ, Spicer says.

Gathering Information on Organ Transplants

Depending on the organ being transplanted, you can get other help from a variety of organizations. UNOS has on its site an exhaustive list, from the American Heart Association, America Kidney Foundation and American Liver Foundation to state organizations such as the Georgia Transplant Foundation.

There's a wide array of information on organ transplants available to you. You can be an integral part of your care by tapping into these resources.

Cinnamon’s Secret Health Benefit?

WebMD Feature from "EatingWell"

Rachael Moeller Gorman

The popular spice may help regulate blood-glucose levels.

With holiday favorites like pumpkin bread and spiced cider on the menu, recent research in the American Journal of Clinical Nutrition provides welcome news: cinnamon may help you better regulate your blood-glucose levels. In a study of 14 healthy people, scientists at Malmö University Hospital in Sweden gave half the subjects rice pudding mixed with about 3 teaspoons of cinnamon; the other half got an unspiced version of the dessert. Then, they switched: each group tried the opposite pudding. Both times, up to two hours after eating, the people who’d enjoyed the cinnamon-spiced pudding measured significantly lower blood-glucose levels than those who’d eaten the unspiced one—an indication that their blood sugar was moving more efficiently into cells, where it’s used.

Eating the spiced pudding also appeared to slow the movement of food from the stomach into the small intestine (a part of digestion called “gastric emptying”). Though researchers don’t know exactly how cinnamon slows digestion, the fact that it does may, in part, explain the lower blood sugar. “When food enters the intestine more slowly, carbohydrates are broken down slower, which leads to a lower [post-meal] blood-glucose concentration,” says the study’s investigator, Joanna Hlebowicz, M.D.

Other studies suggest that the spice also may improve blood-glucose levels by increasing a person’s insulin sensitivity, the ability of cells to respond to insulin’s signal to move glucose out of the blood. One 2003 trial of 60 people with type 2 diabetes reported that consuming as little as 1 gram (about 1⁄2 teaspoon) of cinnamon daily for six weeks reduced blood-glucose levels significantly. It also improved the subjects’ blood cholesterol and triglycerides—perhaps because insulin plays a key role in regulating fats in the body.

But other work disputes these findings. A 2006 study showed that insulin sensitivity in diabetic women taking cinnamon supplements did not improve. Why the discrepancy? It could be because the study examined only a specific population: postmenopausal women, many of whom were taking a variety of glucose-lowering medications (which wasn’t the case in the other studies), say the authors.

Bottom line: Sprinkling a 1⁄2 teaspoon of cinnamon on your oatmeal in the morning can’t hurt, it’s tasty and it just may, over time, help ward off diabetes. But don’t go overboard. Animal studies suggest that a compound in cinnamon called coumarin may be toxic in high doses (although humans may not be as susceptible). Cinnamon oils are particularly concentrated, so steer clear. And if you have diabetes, don’t try cinnamon supplements without talking with your doctor: combining them with a prescription medication may be dangerous.

Reduce Your Risk of Nerve Pain and Damage From Diabetes

Edited By : Rebecca Taylor
Reviewed by :Brunilda Nazario, MD


If you have diabetes, chances are good that you already have some form of nerve pain or nerve damage, called diabetic neuropathy. "People with diabetes have about a 60% chance of getting neuropathy of any kind," says Dace L. Trence, MD, an endocrinologist and director of the Diabetes Care Center at the University of Washington Medical Center in Seattle. "It's probably an equal risk of getting neuropathy with type 1 and type 2 diabetes."

You may have tingling, pain, or numbness in your feet and hands -- common signs of the diabetic nerve damage called peripheral neuropathy. Or you may have damage to the nerves that send signals to your heart, stomach, bladder, or sex organs, called autonomic neuropathy. Nerve damage can also be "silent," meaning you have no symptoms at all.

Sometimes, nerve damage starts even before a person is diagnosed with diabetes, Trance tells WebMD. "Even somebody with prediabetes may have neuropathy," she says. As many as 54 million Americans have prediabetes -- a condition where blood sugar levels are abnormally high, but not high enough to qualify as diabetes -- says the American Diabetes Association (ADA). Add to that the nearly 21 million Americans already coping with full diabetes, and you can see how common nerve pain may be.

The good news? Many of the risk factors for diabetic neuropathy are under your control. So while you may not be able to prevent nerve pain and damage completely, you may be able to help slow it down. You can reduce your risk of nerve damage and other diabetes complications by keeping your blood sugars under tight control, says the National Diabetes Information Clearinghouse (NDIC).

Trence agrees. "The better the blood sugar control," she says, "the less likely neuropathy is to progress." A healthy lifestyle helps lower your risk of heart disease, stroke, and other diabetes complications, as well. So know your risk for complications, and work to control the ones you can control.

Are You at Risk for Diabetic Neuropathy?

1. You Have High Blood Sugar.

The risk: Who are the people at highest risk of nerve pain and damage from diabetes? Those who have trouble controlling their blood sugar.
What you can do: Sometimes glucose control is about mind over matter: you may simply need a little help staying motivated, sticking to your exercise program, or learning how to prepare more varied, tasty, healthy meals. But if you're "doing everything right" and still have high glucose levels, you may need to change your plan and start medications to help better manage your blood sugars.

2. You've Had Diabetes for Many Years.

The risk: Nerve pain and damage is more common in people who have had diabetes for more than 25 years.
What you can do: Do your best to monitor your blood sugar at home as often as advised by your doctor. The NDIC also advises having the A1c test, a blood test that measures your average amount of blood glucose over the previous 2 to 3 months, at least twice a year. Trence advises taking the A1c more often as an extra measure of control. "I think most of us believe it should be done every 3 to 4 months," she says. "It can vary, but we need to keep on top of things, and it's such a powerful piece of information to have to complement the patient's own blood sugars."

3. You're Overweight.

The risk: Being overweight is double trouble for people with diabetes. It puts you at higher risk of diabetic nerve damage -- and higher risk of deadly diabetes complications like heart attack and stroke.
What you can do: Losing weight is hard for everyone, since meals are loaded with emotional meaning, well-being, satisfaction -- or frustration. So if you're overweight, be patient -- but consistent -- with yourself. Losing even a few extra pounds can be a big boost to your health, says the ADA. You really can control this risk with a balanced diet and exercise plan designed for slow, safe weight loss. And losing weight means less pressure on those tender feet if you already have diabetic nerve pain.

4. You're Over 40.

The risk: Diabetic nerve damage is more common in people over 40.
What you can do: While you can't turn back the clock, you can recommit to a healthy lifestyle each year. You might try one, fun new thing to help manage your diabetes each year, like finding a new diabetes cookbook or joining a walking or swimming group, to keep yourself motivated. If you're in a relationship, tell your partner or spouse that your diabetes-friendly lifestyle can help your sweetheart feel young, healthy, and energized, too. Every little bit helps when it comes to diet, exercise, and other lifestyle changes. "It's similar to the blood sugar situation," says Trence. "Wherever a person is at, we try to improve."

5. You're Off-Target With Your Blood Fats.

The risk: The wrong levels of fats in your blood put you at higher risk of diabetic neuropathy. Often, people with diabetes have too-low levels of HDL ("good cholesterol") and too-high levels of the blood fat called triglycerides, says the ADA. To make matters worse, their LDL ("bad cholesterol") makes them more likely to have a heart attack. A grim truth: 66% of people with diabetes will die of a heart attack or stroke, according the ADA.
What you can do: Find out your numbers, if you're not sure. Have your cholesterol checked at least once a year, and aim for these target levels, advises the ADA:
LDL cholesterol: below 100 mg/dL
HDL cholesterol: above 40 mg/dL for men

above 50 for women
Triglycerides: below 150 mg/dL

Keep in mind that these are general guidelines; check with your doctor to see if your target levels are different, given your medical condition.

6. You Have High Blood Pressure.

The risk: High blood pressure, or hypertension, increases your risk of diabetic neuropathy. As many as two out of three adults with diabetes have high blood pressure, increasing their risk of heart disease and stroke.
What you can do: Some people can manage high blood pressure with diet and exercise alone; others need medication. For everyone with diabetes, the ADA advises keeping your blood pressure lower than 130/80 ("130 over 80"). This goal is lower than for the general population, since diabetic people have a higher risk of heart disease and stroke. If you can't keep your blood pressure at this target with exercise and healthy eating, talk to your doctor about taking medications for better blood pressure control.

7. You Smoke.

The risk: Smokers are at greater risk of nerve damage from diabetes. And as you no doubt know, smoking has been linked to heart disease for years.
What you can do: You really can quit, even if you've been a longtime smoker. And it's never too late: Even if you've smoked for years, you'll do yourself a world a good if you quit. These days, you'll find smoking cessation classes, groups, and resources everywhere. Set a quit date, commit yourself, and ask your friends, family, colleagues, and your doctor for support.

8. You Drink a Lot of Alcohol.

The risk: Alcohol goes right into your bloodstream and can "spike" your blood sugar the same way high-sugar foods like desserts do. Drinking can also make you swerve off your meal plan and eat foods you know will wreck your blood sugars. Even more sobering? Alcohol blocks how well your liver clears fat from your blood and can raise your level of unhealthy blood fats called triglycerides - even with as little as two 4-ounce glasses a wine a week, says the ADA.
What you can do: The ADA and NDIC both advise cutting down on drinking to help prevent -- or at least try to control -- diabetic nerve damage. If you already have nerve pain, ask your doctor whether you should have any alcohol at all. There isn't any proven, "safe" amount to drink, so if you're living with diabetes, you may decide to cut out drinking entirely.

So, quick review: Your blood sugar, weight, blood fats like cholesterol, blood pressure, smoking, and drinking. That's six of the eight risk factors for diabetic neuropathy that are under your control. Not bad. Now if medicine can just come up with a "cure" for aging ...

Published July 5, 2007.
Medically reviewed June 2007.

5 Steps to Managing Diabetes Comlications

Diabetes Complications

If not controlled, diabetes can cause a host of complications that can affect nearly every organ in the body. They include:

  • The heart and blood vessels
  • The eyes
  • The kidneys
  • The nerves
  • The gums and teeth

Heart Disease and Blood Vessel Disease

Heart disease and blood vessel disease are the biggest complications that people with uncontrolled diabetes face. Approximately 65% of death from diabetes is due to heart disease and stroke. Diabetes can also cause poor blood flow in the legs and feet (peripheral artery disease).

Many studies show that controlling diabetes can prevent or stop the progression of heart and blood vessel disease.

Learn more about heart and blood vessel disease in people with diabetes.

Blood vessel damage or nerve damage (see below) may also lead to foot problems that can lead to amputations. More than 60% of leg and foot amputations not related to an injury are due to diabetes.

Learn more about diabetes foot problems.

Diabetes and the Eyes

Diabetes is the leading cause of blindness in the U.S. It can cause a number of eye problems, some of which can lead to blindness if not addressed. They include:

  • Glaucoma
  • Cataracts
  • Diabetic retinopathy

Studies show that regular eye exams and timely treatment of diabetes-related eye problems could prevent up to 90% of diabetes-related blindness.

Learn more about diabetes-related eye disease.

Kidney Disease

Diabetes is the leading cause of kidney failure in adults in the U.S. Drugs that lower blood pressure (even if you don't have high blood pressure) can lower risk of kidney failure by 33%.

Learn more about diabetes-related kidney disease.

Diabetes and Your Nerves

Over time, high blood glucose levels can harm the nerves. This can lead to loss of sensation or feeling (usually starting in the toes) or pain and burning of the feet.

Diabetes related nerve damage can also cause pain in the legs, arms, and hands, and can cause problems with digestion, going to the bathroom, or having sex.

Learn more about diabetes-related nerve damage.

Your Teeth

People with diabetes are at high risk for gum disease. Keeping your diabetes under control, seeing your dentist regularly, and taking good daily care of your teeth can prevent gum disease and tooth loss.

Learn more about diabetes and your teeth and gums.

What Causes These Complications of Diabetes?

Diabetes complications are caused by damage to the blood vessels, nerves, or both.

What Are the Symptoms?

Symptoms vary depending on the diabetes complication that you have. You may have:

  • No symptoms if you have heart disease or atherosclerosis of a large blood vessel, unless you have a heart attack or stoke. Disease of the large blood vessels in your legs may cause problems with blood circulation, leading to leg cramps, changes in skin color, and decreased sensation.
  • Vision problems, vision loss, or pain in your eye if you have diabetic eye disease
  • No symptoms if you have early diabetes-related kidney disease. Swelling of the legs and feet occur in more advanced stages of kidney failure.
  • Tingling, numbness, burning, or shooting or stabbing pain in the feet, hands, or other parts of your body, if the nerves are affected by diabetes (peripheral diabetic neuropathy). If the nerves that control internal organs are damaged (autonomic neuropathy), you may have sexual problems, digestive problems (a condition called gastroparesis); difficulty sensing when your bladder is full; dizziness, fainting, or difficulty knowing when your blood sugar is low.

How Can I Prevent Myself From Having Complications From Diabetes?

When complications are found early, you might only have to take medication to prevent progression of the disease. Only minor lifestyle changes may be necessary. For example, if you have early diabetic nephropathy, you can take medication to prevent further damage. Early treatment for a complication and keeping your blood sugar levels within a safe range can help slow the progression of your complication and may prevent other complications from developing.

How Are Diabetes Complications Treated?

Treatment focuses on slowing the progression of the damage. That may include medication, surgery, or other treatment options.

But the most important treatment to slow the progression of diabetes complications is to keep your blood sugar levels tightly in control and to treat high blood pressure and high cholesterol.

Reviewed by Certified Diabetes Educators in the Department of Patient Education and Health Information and by physicians in the Department of Endocrinology at The Cleveland Clinic.

Edited by Brunilda Nazario, MD, October 2006.
Portions of this page © The Cleveland Clinic 2000-2003.

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