Heart Failure: Watching Your Fluids

Search Knowledgebase

Actionset

Heart Failure: Watching Your Fluids

Introduction

Too much fluid in your body can make it harder for your already-weakened heart to pump. Your doctor may prescribe a diuretic to help get rid of excess fluid. He or she may also suggest that you limit liquids so that your body can get rid of the extra water and sodium.

Key points

  • Monitoring your fluid intake can reduce complications and hospitalizations.
  • All foods that melt (such as ice cream, gelatin, and frozen ice treats) and foods that contain a lot of liquid (such as soup) are considered liquids. Be sure to count these in your daily intake.
  • Space your liquids throughout the day. Then you won't be tempted to drink more than the amount you are allowed.
  • To relieve thirst without taking in extra water, try chewing gum, sucking on hard candy (sugarless if you are diabetic), or rinsing your mouth with water and spitting it out.
 

Fluid usually is not restricted in heart failure unless you have advanced or severe heart failure. Usually, restricting sodium intake alone is enough to help your body get rid of extra fluids.

But if your doctor recommends that you limit the amount of fluids you drink and eat (fluid intake), you will need to keep track of all beverages and any foods that contain a lot of liquid. Your doctor will tell you how much fluid you can have in a day.

Test Your Knowledge

Fluid intake usually is not restricted in heart failure unless your doctor gives you a specific fluid limit.

  • True
    This answer is correct.

    Fluid intake usually is not restricted in heart failure unless your doctor gives you a specific fluid limit. Usually fluid is not restricted unless you have severe or advanced heart failure.

  • False
    This answer is incorrect.

    Fluid intake usually is not restricted in heart failure unless your doctor gives you a specific fluid limit. Usually fluid is not restricted unless you have severe or advanced heart failure.

  •  

Continue to Why?

 

Too much fluid in your body can make it harder for your already-weakened heart to pump and can make the symptoms of heart failure worse. Things that affect the amount of fluid in your body include:

  • Too much sodium, which will cause your body to hold onto (retain) extra fluid. Following a low-sodium diet is important in preventing too much fluid from building up in your body.
  • Diuretics, which help your body get rid of excess fluid.
  • The amount of fluid you drink, especially if you cannot get rid of the extra fluid by limiting sodium and taking medicines.

Test Your Knowledge

It is important to follow your fluid recommendations in heart failure:

  • So that you can eat more salt.
    This answer is incorrect.

    Following your fluid recommendations does not mean that you can eat more salt. If your doctor recommends that you limit your fluid intake, it is to help reduce the buildup of extra fluid in your body, along with the medicines you are taking and a low-sodium (low-salt) diet. The correct answer is b.

  • Because it can help maintain a normal sodium balance.
    This answer is correct.

    Following your fluid recommendation is important in heart failure because it can help maintain a normal sodium balance. It may also help reduce the buildup of extra fluid in your body, along with the medicines you are taking and a low-sodium (low-salt) diet.

  • So that you don't have to keep track of the sodium in your diet.
    This answer is incorrect.

    Following your fluid recommendations does not mean that you don't have to keep track of the sodium in your diet. If your doctor recommends that you limit your fluid intake, it is to help reduce the buildup of extra fluid in your body, along with the medicines you are taking and a low-sodium (low-salt) diet. The correct answer is b.

  • So that you can quit taking your medicines.
    This answer is incorrect.

    Following your fluid recommendations does not mean that you can quit taking your medicines. If your doctor recommends that you limit your fluid intake, it is to help reduce the buildup of extra fluid in your body, along with the medicines you are taking and a low-sodium (low-salt) diet. The correct answer is b.

  •  

Continue to How?

 

Your doctor will tell you how much fluid you should be taking in every day. Recommendations may range from about 1500 mL (1.6 qt) to 2000 mL (2 qt), or about 48 fl oz (1500 mL) to 64 fl oz (2000 mL) a day. Here are the amounts of fluid in some common equivalent household measures:

Fluid equivalents
Household measure Equivalent millilitres (mL) Equivalent fluid ounces
1 tablespoon of fluid 15 mL ½ fluid ounce
½ cup of fluid About 120 mL 4 fluid ounces
1 cup of fluid About 250 mL 8 fluid ounces
1 quart of fluid About 1,000 mL (1 litre) 32 fluid ounces

It is important to know how much fluid your regular drinking glasses hold. You can find out by filling your drinking glass with water and then measuring the amount in a measuring cup. After you know this, you won't have to measure every time.

Besides water, milk, juices, and other beverages, some foods contain a lot of fluid. Any foods that will melt (such as ice cream, gelatin, or flavoured ice treats) or foods that have a lot of liquid (such as soup) should also be measured and counted as part of your fluid intake.

How to keep track of your fluid intake

One method for keeping track of your fluid intake is to have an empty container that holds the amount of fluid you are allowed for the day. As you drink fluids, put an equal amount of water into the container until you reach your fluid limit. When the container is full, you have reached your fluid limit and should stop drinking.

Another method for keeping track of your fluid intake is to allow yourself 1 cup (250 mL) of fluid at each meal [3 x 250 mL = 750 mL, or 3 cups]. You can then fill a container with water to keep in your refrigerator that contains the balance of your fluid allowance. For example, if you are allowed 1500 mL (6 cups) of fluid a day, you could have 750 mL (3 cup) divided into three meals and then another 750 mL (3 cups) in the refrigerator to drink during the day. If you drink other beverages besides water (such as coffee, juice, or soft drinks), then you would need to pour out an equal amount of water from your container in the refrigerator.

Test Your Knowledge

To keep track of your fluid intake, you should:

  • Estimate how much you drink during the day.
    This answer is incorrect.

    To keep track of your fluid intake, you should not estimate how much you drink during the day. It is important to carefully measure the amount of any fluids you drink as well as the fluid in foods, such as ice cream, gelatin, flavoured ice treats, and soup. Estimating fluid intake can be very inaccurate. The correct answer is c.

  • Keep track of only the water you drink.
    This answer is incorrect.

    To keep track of your fluid intake, you should not keep track of only the water you drink. It is important to measure the amount of any fluids you drink as well as the fluid in foods, such as ice cream, gelatin, flavoured ice treats, and soup. Estimating fluid intake can be very inaccurate. The correct answer is c.

  • Measure all beverages and all foods that have a lot of fluid in them.
    This answer is correct.

    To keep track of your fluid intake, you should measure all beverages and all foods that have a lot of fluid in them. It is important to measure the amount of any fluids you drink as well as the fluid in foods, such as ice cream, gelatin, flavoured ice treats, and soup. Estimating fluid intake can be very inaccurate.

  • Drink only at meals.
    This answer is incorrect.

    To keep track of your fluid intake, you should not drink only at meals. It is important to measure the amount of any fluids you drink as well as the fluid in foods, such as ice cream, gelatin, flavoured ice treats, and soup. Estimating fluid intake can be very inaccurate. The correct answer is c.

  •  

Which is equal to 1 fluid quart?

  • 8 fluid ounces
    This answer is incorrect.

    Eight fluid ounces is not equal to 1 quart. Thirty-two fluid ounces is 1 quart. It is important to measure fluids and to know how much fluid your glasses hold. The correct answer is c.

  • About 15 millilitres, or ½ fluid ounce
    This answer is incorrect.

    About 15 millilitres, or ½ fluid ounce, is not equal to 1 quart. One litre is about 1 quart. It is important to measure fluids and to know how much fluid your glasses hold. The correct answer is c.

  • About 1 litre, or 32 fluid ounces
    This answer is correct.

    One litre is about 1 quart, or 32 fluid ounces. It is important to measure fluids and to know how much fluid your glasses hold.

  • About 125 millilitres, or 4 fluid ounces
    This answer is incorrect.

    About 125 millilitres is not equal to 1 quart. Thirty-two fluid ounces is 1 quart. It is important to measure fluids and to know how much fluid your glasses hold. The correct answer is c.

  •  

Continue to Where?

 

Talk with your health professional (cardiologist, family doctor, dietitian, or nurse)

If you have questions about this information, take it with you when you visit your health professional. You may want to mark areas or make notes in the margins of the pages where you have questions.

If you would like more information on fluid intake in heart failure, the following resource is available:

Organizations

Canadian Cardiovascular Society
222 Queen Street
Suite 1403
Ottawa, ON  K1P 5V9
Phone: 1-877-569-3407 toll-free
(613) 569-3407
Fax: (613) 569-6574
Web Address: www.ccs.ca
 

The Canadian Cardiovascular Society works to advance the cardiovascular health and care of Canadians through leadership, research, and advocacy.


Canadian Association of Cardiac Rehabilitation
1390 Taylor Avenue
Winnipeg, MB  R3M 3V8
Phone: (204) 488-5854
Fax: (204) 928-7873
Web Address: www.cacr.ca
 

The Canadian Association of Cardiac Rehabilitation (CACR) is a professional organization that promotes research in cardiac disease prevention and rehabilitation. The CACR website includes articles on topics related to cardiac disease.


Heart and Stroke Foundation of Canada
222 Queen Street
Suite 1402
Ottawa, ON  K1P 5V9
Phone: (613) 569-4361
Fax: (613) 569-3278
Web Address: www.heartandstroke.ca
 

The Heart and Stroke Foundation of Canada works to improve the health of Canadians by preventing and reducing disability and death from heart disease and stroke through research, health promotion, and advocacy.


U.S. National Heart, Lung, and Blood Institute (NHLBI)
P.O. Box 30105
Bethesda, MD  20824-0105
Phone: (301) 592-8573
Fax: (240) 629-3246
TDD: (240) 629-3255
Email: nhlbiinfo@nhlbi.nih.gov
Web Address: www.nhlbi.nih.gov
 

The U.S. National Heart, Lung, and Blood Institute (NHLBI) information center offers information and publications about preventing and treating:

  • Diseases affecting the heart and circulation, such as heart attacks, high cholesterol, high blood pressure, peripheral artery disease, and heart problems present at birth (congenital heart diseases).
  • Diseases that affect the lungs, such as asthma, chronic obstructive pulmonary disease (COPD), emphysema, sleep apnea, and pneumonia.
  • Diseases that affect the blood, such as anemia, hemochromatosis, hemophilia, thalassemia, and von Willebrand disease.

Return to topic:

Credits

By Healthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Primary Medical Reviewer Brian D. O'Brien, MD - Internal Medicine
Specialist Medical Reviewer Robert A. Kloner, MD, PhD - Cardiology
Last Revised October 14, 2010

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.