Get your Health question answered in 3 easy steps
A Doctor will be with you shortly
Ask a Doctor Now
135 Doctors are Online

Fluid retention in legs, lungs. Knee replacement surgery done. Causes and treatment?

My 72 yo mother had knee replacement 6 weeks ago. Now she is retaining fluid in both legs. Two weeks ago she had fluid in her lungs and went to hosp for 2 days. Now back at home, she scratched the unoperated leg yesterday and clear fluid runs out. Enough to wet the sheets. We are in different states, so I cannot see the leg.
Asked On : Thu, 26 Jul 2012
Answers:  1 Views:  121
Report Abuse
Share on Facebook
Share on Twitter
Share on Google+
Question is related to
Diseases and Conditions
Medical Procedures
Medical Topics
General & Family Physician 's  Response
Welcome to HealthCareMagic. My name is Doctor Saleem Ur Rehman and I will like to answer your question.

First I will like to tell you about how fluid circulates in the body:
Basically body fluid is divided into Intracellular Fluids and Extracellular Fluids by semi-permeable membrane (which envelopes every cell). Extracellular fluid is further divided into Extravascular fluid (which bathes the cell) and Intravascular Fluid (fluid within the blood vessels)
Semi permeable means that only some ions are allowed to pass through the membranes. For example, Sodium is kept out of the cells and Potassium is concentrated inside the cells. Water is always distributed through a semi-permeable membrane in accordance with the relative solute concentrations of the compartments.

When you drink any fluid, it absorbed from the stomach and intestines and enters the extracellular compartment. From there it is distributed to the Intracellular compartment based on osmotic laws. As an elaboration, fluid will be distributed from your blood to the extravascular compartment through the capillary membranes. It will bath the cells and either enter the cells through cell membrane or be washed away by the lymphatic channels. These lymphatic channels open up into the vascular compartment.

Fluid is excreted from the body through kidneys (urine), skin (sweating), and lungs (breathing).

Fluid is retained when the intravascular compartment is either low in proteins (which decreases the solute concentration causing a shift of water to the extravascular compartment) and the kidneys retain water to compensate for the resultant "under-filled" vessels. In such cases generalized fluid retention will occur, meaning that he whole body will be involved.
In certain cases, the lymphatic system is blocked. These include surgeries, metastatic carcinomas (when the cancer cells deposit in the lymphatics), filariasis, congenital defects and other nodal diseases.

The fluid retention in your grandmother's case seems to be due to systemic causes. These include Congestive Heart Failure, Nephrotic Syndrome, Cirrhosis and Nutritional Edema.
Her treatment will correspond to the underlying cause of edema. For example, in case of Congestive Heart Failure she will be given diuretics to increase the excretion of fluids through kidneys. Almost all causes are treated with a decrease in daily fluid intake (except in nutritional edema, where nutrition supplements, preferably proteins, are given to decrease edema)
Answered: Thu, 17 Oct 2013
I find this answer helpful
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer. For a more detailed, immediate answer, try our premium service [Sample answer]


Loading Online Doctors....
© Ebix, Inc. All Rights Reserved.
All the information, content and live chat provided on the site is intended to be for informational purposes only, and not a substitute for professional or medical advice. You should always speak with your doctor before you follow anything that you read on this website. Any health question asked on this site will be visible to the people who browse this site. Hence, the user assumes the responsibility not to divulge any personally identifiable information in the question. Use of this site is subject to our Terms & Conditions
Already Rated.
Your rating:

Ask a Doctor