How does bowel ischemia cause acidosis?

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Mesenteric or small intestine ischemia is a medical condition in which inflammation and injury of the small intestine result from inadequate blood supply. Causes of the reduced blood flow can include changes in the systemic circulation (e.g. low blood pressure) or local factors such as constriction of blood vessels or a blood clot. It is more common in the elderly.

Three progressive phases of ischemic colitis have been described:

A) A hyperactive phase occurs first, in which the primary symptoms are severe abdominal pain and the passage of bloody stools. Many patients get better and do not progress beyond this phase.


B) A paralytic phase can follow if ischemia continues; in this phase, the abdominal pain becomes more widespread, the belly becomes more tender to the touch, and bowel motility decreases, resulting in abdominal bloating, no further bloody stools, and absent bowel sounds on exam.



C) Finally, and this is impt as it's relevant to your question. A shock phase can develop as fluids start to leak through the damaged colon lining. This can result in shock and METABOLIC ACIDOSIS with dehydration, low blood pressure, rapid heart rate, and confusion. Patients who progress to this phase are often critically ill and require intensive care.  (+ info)

how to prevent a heart attack with a condition called ischemia??

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Ischemia means reduced blood supply. Heart attack is due to total blockage of one blood vessel, usually due to a clot. Control of risk factors like smoking, diabetes, high blood pressure and cholesterol helps prevent heart attacks. Aspirin prevents formation of clots to great extend.  (+ info)

what is microvascular ischemia?

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my sister had minimal microvascular ischemia periventricular white matter of the brain . what is it?
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WHAT IS THE MEDICAL TREATMENT,DIETERY PRECAUSION AND RECOMMENDED EXERCISE FOR REVERSIBLE ISCHEMIA?

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Reversible iscaemia is not a really clear cut term. I guess this means that you had a positive stress or exercise test. basically this does however indicate IHD,iscaemic heat disease.

Though a low fat diet and regular vigorous exercise, and of course being a total non-smoker may slow or inhibit progression,the disease is still there.

Next step is usually angiography to locate the areas of narrowing in the coronary vessels and ideally angioplasty them an insert stents where possible and appropriate. If this is not an option CABG may be the answer. (coronary artery bypass.)

As well as these surgical interventions medication may be required or it may be used as an alternative in patients unsuitable for the procedures.  (+ info)

What is mesenteric ischemia?

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The causes, cures/treatments?
Also, what is the procedure to get rid of it?
The mesenteric arteries are the three major arteries that supply blood to the stomach, small intestine, and large intestine. The word “ischemia” means decrease in oxygen supply.

Mesenteric ischemia is a condition in which the mesenteric arteries do not deliver enough blood and oxygen to the small and large intestines. This makes it difficult for the intestines to digest food and can cause segments of the intestine to die.

It is usually treated with surgery. The narrow or blocked portion of the arteries may be removed and the arteries are then reconnected to the aorta. Or, the blocked part of the artery may be bypassed, with a piece of vein or a plastic tube. Acute mesenteric ischemia is treated with emergency surgery. It is extremely important to restore the blood supply to the intestine as quickly as possible by removing the blockage from the artery. Portions of the intestine may have to be removed if the lack of blood has caused any of the tissue to die.  (+ info)

CHF, Inferolateral ischemia High blood pressure & Cholesterol?

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What should I ask the Cardiologist? When I lay down I cough or have to catch my breath I am kinda scared to go to sleep I am not diabetic, Non drinker, or smoker. I do not eat fatty foods i am a little overweight . History of CVA, 1999, MI,2008 I also need gallbladder surgery.
You want to know how weakened your heart is. The weaker the worse the outlook and propensity for severe heart failure. You will also need a heart cath prior to your GB surgery. You want to know how many arteries are blocked and how badly blocked they are. This will determine the type of intervention(if any) that is appropriate for you and also contribute to the assessment of your long term outlook.  (+ info)

what is the difference between Hypoxia and Ischemia?

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Very VERY basically, hypoxia is deficient oxygen to body tissue, and ischemia is deficient blood supply.  (+ info)

Does Ischemia show up everytime you experience Angina?

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I feel I suffered an Angina attack about a week ago. However I had some testing but there was no signs of heart disease or ishemia. I had been drinking the new Diet Pepsi Max for about four days and I feel it made me have a coranary spasm which caused my Angina. Is this a good assumption? Please give me some insight. Thanks
Well...
First, Angina (angina pectoris, that is) is chest pain that is due to ischemia. Therefore, if there is no ischemia, then it is most definitely not Angina.

Second, Ischemia just means a lack of blood supply...and therefore, a lack of oxygen. It does NOT mean that heart cells have died, it just means that cells are "hungry" for oxygen. And this oxygen "hunger" in heart cells manifests itself as chest pain that is called "Angina".

When the heart cells actually DIE (angina that "goes on too long", so to speak), this is called Infarction. When this happens, a person is said to have a "Myocardial Infarction"...which is just medical mumbo jumbo for "Heart muscle cells dying" or in laymans terms, "Heart attack".

When heart cells actually DIE (infarction), they release all these chemicals in the blood stream that can be measured. These are called the cardiac enzymes (Troponin, CK-MB, CPK, etc). Based on the levels of these enzymes in the blood, a doctor can see that infarction has occured (i.e. it "shows up").

During Ischemia, the heart cells are "hungry" for oxygen, but they aren't dead. Therefore, their cell walls are still intact and the cardiac enzymes are not released into the blood stream. Therefore, by blood tests, Ischemia does not "show up".

Subtle signs of "ischemia" may "show up" during ACTIVE ischemia on an EKG, but later (after the chest pain has gone away) these changes go away. This is why doctors order "exercise stress tests". They make you run until you are out of breath...to make your heart beat really fast...in order to increase the demand for oxygen in the heart. If the heart can't keep up...and the cells become "hungry" for more oxygen (ischemia), then some subtle changes will show up on the EKG. This is what dictates a positive excercise stress test.

As for drinking all the Diet Pepsi Max, it is very unlikely that this caused you to have a "coronary spasm" leading to angina. It is MUCH more likely it is all GI related - acid reflux from the caffeine that decreased your esophageal sphincter tone...or possibly an esophageal spasm.

However, I'd talk to your doctor to make sure cardiac disease is completely out of the question, especially if you have any risk factors (male, smoker, diabetes, high blood pressure, high cholesterol, family history of heart disease).

The "gold standard" for ruling out cardiac disease is a cardiac catheterization - where they stick a tube up your femoral artery (in your groin area), shoot a dye through your coronary arteries, and snap photos via x-ray to visualize the flow (or blockage) of blood in your coronary arteries.

But if a person has a negative "thallium stress test" or an negative "stress echo" (both less invasive tests), then cardiac disease is unlikely and a cardiac catheterization is usually not even required.

In any event, I hope this gives you some added insight.  (+ info)

what is anterior ischemia?

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This is a condition based on and ECG report.
Yes Anterior or anterior wall ischemia is based on ECG finding.  (+ info)

My grandmother has ischemia in the right side of her brain. Will this eventually shut down other vital organs?

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She has lost a lot of cognitive function very quickly. In less than a week she has gotten to where she doesn't know who family members are and she is very concerned about numbers...dates, baseball scores, television channels, she keeps counting to 6 over and over.

Thank you all for any information you can help provide.
Cerebral ischemia.

The brain isn't getting enough blood; blood carries oxygen, so the brain isn't getting enough oxygen.

Because of not getting enough oxygen, brain cells die, one by one, but they die. If the iscemia is on the right side of her brain, I'd bet that her right carotid artery is close to completely blocked.

As far as shutting down other vital organs, the vascular condition which caused the ischemia (atherosclerosis, high blood pressure?) has been/ and is still likely to be affecting her other vital organs

There is no way to know how long this process may take; without knowing how compromised other organs are already?  (+ info)

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