Check Cats for Dehydration

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When the amount of fluid lost from a cat's body is greater than the amount taken in, the pet becomes dehydrated. This can happen for a number of reasons, including not eating or drinking enough, overheating, vomiting, diarrhea, as well as many others factors.[1] Dehydration is a serious condition for cats because proper fluid balance is critical for maintaining body temperature, removing wastes, maintaining proper circulation, and ensuring the balance of critical body systems. The sooner you can detect early signs of dehydration in your cat and get your pet appropriate help, the easier the condition is to reverse.

Steps

Checking for Signs of Dehydration

  1. Take immediate action if necessary. Some causes warrant immediate medical attention in any cat no matter his age or general health status. These causes include as any suspicion of internal bleeding, burns, moderate to severe wounds, significant or prolonged vomiting or diarrhea, lack of appetite that lasts for more than 24 hours in an adult cat or 12 hours in a young kitten, open-mouth breathing, or high fever.[2]
  2. Monitor your cat's water intake. In its early stages, dehydration is easy to miss. In fact, even the most subtle physical signs aren't detectable until the cat is at least 4 or 5% dehydrated.[3] Because of how subtle the signs are, you should pay attention to how much your cat drinks every day. Notice if he is drinking less or none at all.
    • You should also make sure you keep plenty of fresh water around for him, especially if you are going to be away for an extended period of time, such as work or all day outing.
  3. Assess the gums' moistness. One way to tell if your cat is dehydrated is to check his gums. Use your finger to push up his upper lip and expose his gum line. Touch your finger to the gum. In a well-hydrated cat, the gum tissue should feel moist. As the cat becomes more and more dehydrated, his gums start to dry. If the gum tissue feels sticky or tacky, the cat may be showing the first signs of dehydration.
    • If the gum tissue actually feels dry, the cat may be moderately or severely dehydrated, depending on other signs. Gums usually don't feel completely dry until a cat is at least 6 to 7% dehydrated.[4]
    • Keep in mind that your cat's gums will rapidly dry in the air after you raise the upper lip, so you need to assess moistness immediately.
    • If your cat's gums feel dry, sticky, or tacky or you aren't certain whether or not the gums are normal, examine the cat further to help you decide whether the pet is dehydrated or how dehydrated he is.
  4. Check the gums' capillary refill time (CRT). The CRT is the amount of time it takes the capillaries, which are tiny blood vessels, in the gums to refill with blood. Because dehydration reduces blood volume, this time is increased in dehydrated pets.[5] To check CRT, press your finger to the cat's gum and release it. The skin should blanch or turn white. If it doesn't, try again and press a little harder. After you lift your finger, count the number of seconds it takes the blanched skin to return to its normal color.
    • In a healthy, well-hydrated cat, the skin should return to normal color in less than 2 seconds.
    • In a moderately dehydrated cat, this may take slightly longer. In cases of more severe dehydration, this refill time may be even more noticeably prolonged.
    • CRT does not usually increase in cases of mild dehydration, so an increased CRT may indicate moderate to severe dehydration and warrants veterinary attention.
    • If the gums are very pale or white before you press on them, take the cat to the vet right away. Pale gums can be a sign of more advanced dehydration.[6]
  5. Test skin elasticity. Another early sign of dehydration is a subtle loss of skin elasticity. This becomes more pronounced as dehydration worsens. Check elasticity by choosing an area of skin along your cat's back or chest. Avoid the skin on the back of the neck since it is thick and may give misleading results. Gently pinch the skin between two of your fingers and release it. Observe the skin you pinched.
    • In a healthy, well-hydrated cat, the skin should snap back into place immediately. In a mildly dehydrated cat, the skin may not snap back into place as quickly as it would in a well-hydrated animal.
    • In a moderately to severely dehydrated cat, the skin will be obviously slow in returning to place, and in a profoundly dehydrated cat, the skin may stay in the pinched position instead of snapping back into place.[7]
    • It is important to realize that this test is not always completely accurate. Old or emaciated animals often have less elastic skin than younger animals, so their skin may not snap into place quickly even if they are well hydrated.[8] Kittens under 6 weeks of age have less skin elasticity than adult cats.[9] Overweight pets have a lot of subcutaneous fat, so they may not have obvious loss of skin elasticity until they are severely dehydrated.[10]
  6. Check the eyes. Your cat's eyes can give you important information about hydration status. Slightly sunken eyes in an otherwise healthy cat can signal moderate dehydration. It is important to note, however, that very thin cats, especially older cats or those with chronic illnesses, may have slightly sunken eyes normally.[11]
    • Severely sunken eyes that appear dry can indicate severe dehydration. In some advanced cases, the third eyelid may even be visible.[12]
    • If the eyes appear dry, sunken or the third eyelid is protruding, the cat should receive prompt veterinary attention.
  7. Feel the paws. In a cat with other signs of dehydration, paws that feel cool to the touch can indicate moderate to severe dehydration.[13] To assess this, gently pick up your cat. Hold his paw in the palm of your hand and note the temperature. If it feels like the normal temperature of your cat, then he is not moderately dehydrated. If his paws feel cool or cold, this could be a sign of severe dehydration and you should get him to the vet as soon as you can.

Seeking Treatment and Evaluation

  1. Seek veterinary assistance. If your cat is showing signs of dehydration, you need to make a visit to the veterinarian. You should consult a veterinarian as soon as your cat exhibits signs of dehydration, since the condition is far easier to correct in its earliest stages. If you suspect your cat is moderately to severely dehydrated, or if the animal is lethargic or unresponsive, get your pet to the veterinarian right away.
    • Let the vet know it is an emergency so you can be seen faster. Severe dehydration is a life-threatening emergency.
    • In addition to confirming the results of your physical examination and assessing your cat's history, your veterinarian can run tests to help determine how dehydrated your cat is and to decide on an appropriate course of treatment.
  2. Let the vet run tests. In addition to a physical examination, your vet may run some basic tests to access the state of your cat's dehydration. Some basic tests veterinarians use to assess hydration include a blood test to assess the packed cell volume (PCV). If the PCV will be higher than normal, your cat is likely dehydrated.[14]
    • The vet may also run a urine sample to check its concentration. Usually, when animals are dehydrated, the kidneys concentrate urine to conserve water. If your cat has kidney disease or a hormone imbalance, however, he may not be able to appropriately concentrate his urine even when he is dehydrated.[15]
    • Other tests can be run depending on the suspected underlying cause of the dehydration.
  3. Give your cat the treatment. Once the veterinarian assesses your cat, she will calculate the approximate degree of dehydration and formulate a fluid treatment plan. The best way to correct moderate to severe dehydration is by providing intravenous fluids. You also will need to address the underlying cause of the dehydration in your cat in order to remedy the situation in the future.
    • In cases of severe dehydration, immediate, aggressive intravenous fluid therapy is required to ensure the cat's recovery.
  4. Look for underlying causes in sick cats. Because early signs of dehydration are subtle and easy to miss, being able to identify potential dehydration risk factors and situations that could lead to dehydration in your cat is important. You should look for common underlying causes of dehydration such as not eating or drinking enough, excessive urination, vomiting, diarrhea, burns or other skin damage, internal or external bleeding, fever, and loss of fluid inside the body due to internal bleeding or other inappropriate shift of fluid out of the blood vessels.
    • Sick or debilitated cats and young kittens are especially vulnerable to this condition. If your cat fits this description, you should be especially vigilant in looking for these factors. These are always cause for alarm and warrant veterinary attention. [16]
  5. Identify risk factors. Certain medical and environmental conditions make dehydration more likely, so pets suffering from these conditions are at increased risk of becoming dehydrated. This means you should watch pets with these conditions very closely for early signs of dehydration. Examples of such conditions include kidney disease, diabetes, hyperthyroidism, heart disease, inflammatory bowel disease, gastrointestinal parasites, various infectious diseases, and heat exhaustion.

Tips

  • Make sure cats always have access to plenty of fresh, clean water.
  • Feed your cat at least some canned or fresh food since dry food does not provide sufficient moisture.[17]

Related Articles

Sources and Citations

  1. ↑ Helio A. de Morias, Dennis J. Chew, Catherine W. Cohn and Stephen P. DiBartola, "Disorders of Fluid Balance, Fluid Therapy and Transfusion Therapy." In Quick Reference to Veterinary Medicine, Edited by William R. Fenner. Philadelphia: Lippincott Williams & Wilkins, 2000
  2. ↑ Helio A. de Morias, Dennis J. Chew, Catherine W. Cohn and Stephen P. DiBartola, "Disorders of Fluid Balance, Fluid Therapy and Transfusion Therapy." In Quick Reference to Veterinary Medicine, Edited by William R. Fenner. Philadelphia: Lippincott Williams & Wilkins, 2000
  3. ↑ http://www.merckvetmanual.com/mvm/emergency_medicine_and_critical_care/fluid_therapy/the_fluid_resuscitation_plan.html
  4. ↑ http://www.merckvetmanual.com/mvm/emergency_medicine_and_critical_care/fluid_therapy/the_fluid_resuscitation_plan.html
  5. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  6. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  7. ↑ http://www.veterinarypartner.com/Content.plx?P=A&A=292&S=0&EVetID=0
  8. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  9. ↑ https://www.vetlearn.com/_preview?_cms.fe.previewId=308c2f60-d966-11e0-9094-0050568d3693
  10. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  11. ↑ http://www.merckvetmanual.com/mvm/emergency_medicine_and_critical_care/fluid_therapy/the_fluid_resuscitation_plan.html
  12. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  13. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  14. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  15. ↑ Victoria Aspinall and Richard Aspinall. Clinical Procedures in Small Animal Veterinary Practice. Gloucester, UK: 2013.
  16. ↑ Helio A. de Morias, Dennis J. Chew, Catherine W. Cohn and Stephen P. DiBartola, "Disorders of Fluid Balance, Fluid Therapy and Transfusion Therapy." In Quick Reference to Veterinary Medicine, Edited by William R. Fenner. Philadelphia: Lippincott Williams & Wilkins, 2000
  17. ↑ http://www.veterinarypartner.com/Content.plx?A=3041
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