Long Term, Short, and your Heart

I received some comments about Acute Kidney Disease (AKI) in the midst of all the support after last week’s blog. It seems this is a new topic for so many of us. By us I mean Chronic Kidney Disease (CKD) patients. I know at stage 3, my nephrologist never brought this up to me.

Ah, but I remembered this from The Book of Blogs: Moderate Stage Chronic Kidney Disease, Part 2:

On the very first page of What Is It and How Did I Get It? Early Stage Chronic Kidney Disease, I wrote “…chronic is not acute. It means long term, whereas acute usually means quick onset and short duration.”

All those years of teaching English in high school and college paid off for me right there in that sentence.

I’d always thought that AKI and CKD were separate issues and I’ll bet you did, too. But Dr. L.S. Chawla and his co-writers based the following conclusion on the labor of epidemiologists and others. (Note: Dr. Chawla et al wrote a review article in the New England Journal of Medicine in 2014.)

“Chronic Kidney Disease is a risk factor for acute kidney injury, acute kidney injury is a risk factor for the development of Chronic Kidney Disease, and both acute kidney injury and Chronic Kidney Disease are risk factors for cardiovascular disease.” …

Not surprisingly, the risk factors for AKI {Once again, that’s acute kidney injury.} are the same as those for CKD… except for one peculiar circumstance. Having CKD itself can raise the risk of AKI 10 times. Whoa! If you’re Black, of an advanced age {Hey!}, or have diabetes, you already know you’re at risk for CKD, or are the one out of nine in our country that has it. Once you’ve developed CKD, you’ve just raised the risk for AKI 10 times. I’m getting a little nervous here….

It makes sense, as researchers and doctors are beginning to see, that these are all connected. I’m not a doctor or a researcher, but I can understand that if you’ve had some kind of insult to your kidney, it would be more apt to develop CKD.

And the CVD risk? Let’s think of it this way. You’ve had AKI. That period of weakness in the kidneys opens them up to CKD. We already know there’s a connection between CKD and CVD. Throw that AKI into the mix, and you have more of a chance to develop CVD whether or not you’ve had a problem in this area before. Let’s not go off the deep end here. If you’ve had AKI, you just need to be monitored to see if CKD develops and avoid nephrotoxic {Kidney poisoning} medications such as NSAIDS… contrast dyes, and radioactive substances. This is just so circular!

As with CKD, your hypertension and diabetes {If you have them.} need to be monitored, too. Then there’s the renal diet, especially low sodium foods. The kicker here is that no one knows if this is helpful in avoiding CKD after an AKI… it’s a ‘just in case’ kind of thing to help ward off any CKD and possible CVD from the CKD.

Has your primary care doctor recommended a daily low dose aspirin with your nephrologist’s approval? This is to protect your heart against CVD since you already have CKD which raises the risk of CVD. Now here’s where it gets confusing, the FDA has recently revoked its endorsement of such a regiment.

Let’s see what more we can find out about this dastardly triumvirate.

The National Kidney Foundation at https://www.kidney.org/atoz/content/AcuteKidneyInjury offers this information about AKI.

Acute kidney injury (AKI) is a sudden episode of kidney failure or kidney damage that happens within a few hours or a few days. AKI causes a build-up of waste products in your blood and makes it hard for your kidneys to keep the right balance of fluid in your body. AKI can also affect other organs such as the brain, heart, and lungs. Acute kidney injury is common in patients who are in the hospital, in intensive care units, and especially in older adults.

You did catch that it can affect the heart, right?

Well, what about the heart and its diseases?

This is from the Mayo Clinic at http://www.mayoclinic.org/diseases-conditions/heart-disease/basics/definition/con-20034056.

The term “heart disease” is often used interchangeably with the term “cardiovascular disease.”

Cardiovascular disease generally refers to conditions that involve narrowed or blocked blood vessels that can lead to a heart attack, chest pain (angina) or stroke. Other heart conditions, such as those that affect your heart’s muscle, valves or rhythm, also are considered forms of heart disease.

Many forms of heart disease can be prevented or treated with healthy lifestyle choices.

Maybe a reminder of what CKD is will help, too. WebMD at http://www.webmd.com/a-to-z-guides/tc/chronic-kidney-disease-topic-overview#1 offers this simple, comprehensive explanation.

Having chronic kidney disease means that for some time your kidneys have not been working the way they should. Your kidneys have the important job of filtering your blood. They remove waste products and extra fluid and flush them from your body as urine. When your kidneys don’t work right, wastes build up in your blood and make you sick.

Chronic kidney disease may seem to have come on suddenly. But it has been happening bit by bit for many years as a result of damage to your kidneys.

Each of your kidneys has about a million tiny filters, called nephrons. If nephrons are damaged, they stop working. For a while, healthy nephrons can take on the extra work. But if the damage continues, more and more nephrons shut down. After a certain point, the nephrons that are left cannot filter your blood well enough to keep you healthy.

My head is spinning. One could – or could not – lead to another which, in turn, could – or could not – lead to the third. There’s no strict order and there’s no way of knowing until you actually have it. My layperson’s suggestion? Take good care of your kidneys.

Until next week,
Keep living your life!

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