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Is EFGR Value Of 90 Normal?

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Posted on Mon, 31 Aug 2015
Question: I am worried about what seems to me to be extremely variable urine output even though I drink the same amount each day and lifestyle seems the same- vegetarian diet and exercise daily without excessive sweating or changes in medications.

I am so worried because I have a history of pvc-induced cardiomyopathy, now resolved after an ablation. When I was sick, a doctor told me I would always be in danger of CHF again, and that I would always need to be careful with fluids. Now heart, kidney, and liver function is normal but I fear all the time that my body won't be able to process fluids. In the hospital, when I was diagnosed, water was taken from my hands and I have been afraid to drink normally ever since.

My concerns:
1. Is urine output variable even when intake is the same and there's not excessive sweating? For example, I may drink 20 oz of water and need to urinate three times in the next two hours but then sometimes only once.

2. Is EFGR of 90 normal? My creatinine is only .7 so it seems low. How quickly can these blood values change without a disease process? Would testing from a month ago still be accurate?

3. Would lowered urine output be an advanced sign of kidney issues and therefore unlikely in someone like me with normal bloodwork?

I have had bladder/kidney ulttasound which was normal. Labwork is attached. Thank you.
doctor
Answered by Dr. Rakesh Madhyastha (44 minutes later)
Brief Answer:
Normal Kidney function

Detailed Answer:
Hello

Thanks for the query. I have gone through the reports you have attached and it looks like you have normal kidney function. Now let me answer your doubts one by one

1. Excretion of fluid is not only by urine but also through stools, perspiration and expiration. Apart from the amount of fluids you take it also depends on what type of food and the amount of coffee you are drinking. A better way to monitor fluid status is by measuring your weight everyday

2. eGFR of 90 is subnormal however eGFR is not a very accurate method of measuring the GFR. However a serum creat of 0.7 is normal for your age. There is no need to test creat every month. In absence of any disease I recommend you to get a urine routine and creat checked once a year

3. The first sign of kidney disease is most often presence of protein loss in urine, which you do not have.

I hope I was of help, if you have any further doubts please get back to me.

Regards
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Rakesh Madhyastha (47 hours later)
Thank you so much, doctor. So with all normal lab values, and a return to totally normal heart function, is it irrational for me to think that I could suddenly just stop producing urine without any signs or symptoms? I'm afraid I was given this impression by two different doctors and now every time I drink water I am terrified that my body will not be able to process it and I will be in heart/kidney failure.

Can you explain how kidney function would be compromised if heart issues should return? Is it an advanced stage of heart failure and kidney dysfunction where urine output is actually affected? My weight is stable and no visible edema but even when I was very sick, with EF of just 25/30, my weight was stable and I didn't have noticeable fluid retention so I'm pretty terrified about a return of illness without any symptoms.

I know anxiety is playing the major role in my worrying, rather than symptoms, but I keep thinking understanding from a more clinical side why I'm ok now will help me be able to believe I have fully recovered. Thank you so much.
doctor
Answered by Dr. Rakesh Madhyastha (6 hours later)
Brief Answer:
Left ventricular dysfunction

Detailed Answer:
Hello

Thanks for the query


With ejection fraction of 25% you could sometimes notice issues like shortness of breath especially while doing unaccustomed work. Issues of the heart can lead to renal dysfunction as an eventuality but it is mostly in people who are irregular to follow up. Please don't worry about the functioning of the kidney as it is normal, be on regular follow up with your cardiologist and make sure you take medications prescribed without fail.

To answer your question on how heart affects the kidney is very technical and it will be hard for me to write it. However I will be sending you a link which will explain things in simple terms

https://en.m.wikipedia.org/wiki/Cardiorenal_syndrome

I hope I was of help, please get back to me with any doubts.

Regards


Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Rakesh Madhyastha (18 hours later)
Thank you very much, doctor. So in absence of heart, kidney, or liver problems, whatever urine my body is producing is being well regulated by my kidneys? I can't stop internally monitoring my urine, afraid that I am not producing enough.
doctor
Answered by Dr. Rakesh Madhyastha (26 minutes later)
Brief Answer:
Monitoring weight

Detailed Answer:
Hello

I recommend that you montior your weight as well. Increase in weight acutely ( > 500 g everyday ) means that the body is retaining fluid

Regards
Above answer was peer-reviewed by : Dr. Yogesh D
doctor
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Follow up: Dr. Rakesh Madhyastha (49 minutes later)
Hello- you think it's necessary to weigh myself everyday despite being completely healthy? I am already obsessive and suffering from compulsive monitoring? Also isn't it possible to gain up to one or two pounds from a large salty meal or from one's menstrual cycle without it being dangerous? If, as a healthy person, I notice over a pound of weight gain, is it a medical emergency?
doctor
Answered by Dr. Rakesh Madhyastha (3 hours later)
Brief Answer:
Weight monitoring

Detailed Answer:
Hello

It is not necessary to monitor your weight everyday, I suggested this option as it is less cumbersome than measuring your urine output.
Gain of weight after a salty meal or menstrual cycle is mostly because of retention of salt leading to fluid retention. You will notice swelling of the feet and sometimes puffiness of face.

Medical emergency is only when there is large amount of accumulation of fluid leading to respiratory compromise.


Regards
Note: For further queries related to kidney problems and comprehensive renal care, talk to a Nephrologist. Click here to Book a Consultation.

Above answer was peer-reviewed by : Dr. Prasad
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Answered by
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Dr. Rakesh Madhyastha

Nephrologist

Practicing since :2009

Answered : 4364 Questions

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Is EFGR Value Of 90 Normal?

Brief Answer: Normal Kidney function Detailed Answer: Hello Thanks for the query. I have gone through the reports you have attached and it looks like you have normal kidney function. Now let me answer your doubts one by one 1. Excretion of fluid is not only by urine but also through stools, perspiration and expiration. Apart from the amount of fluids you take it also depends on what type of food and the amount of coffee you are drinking. A better way to monitor fluid status is by measuring your weight everyday 2. eGFR of 90 is subnormal however eGFR is not a very accurate method of measuring the GFR. However a serum creat of 0.7 is normal for your age. There is no need to test creat every month. In absence of any disease I recommend you to get a urine routine and creat checked once a year 3. The first sign of kidney disease is most often presence of protein loss in urine, which you do not have. I hope I was of help, if you have any further doubts please get back to me. Regards