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Fluid in the Lungs in Dogs
Written By hannah hollinger
Published: 09/30/2015Updated: 05/07/2021
Veterinary reviewed by Michele K.
What are Fluid in the Lungs?
Pulmonary edema may develop over time and show as a breathing difficulty for your pet only upon exertion. Or rapid accumulation of fluid in the lungs may occur, causing acute respiratory distress. If the alveoli become filled with fluid instead of air, your dog will have reduced breathing capabilities due to low oxygen intake and limited carbon monoxide output. If you sense that your dog is having breathing difficulties, bring him to the veterinarian immediatelyl, as this may be an emergency.
Fluid in the lungs in dogs is also known as pulmonary edema. An abnormal amount of fluid accumulates in the alveoli (air sacs within the lungs where the exchange of carbon monoxide and oxygen take place) and the interstitium (blood vessels and cells that support the alveoli).
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Symptoms of Fluid in the Lungs in Dogs
Depending upon the reason for the fluid accumulation and the length of time that the breathing difficulty has been developing, signs may vary. If your dog is exhibiting any of these signs, see a veterinarian immediately:
  • Coughing
  • Weakness
  • Crackling noises when breathing
  • Rapid intake of air upon exertion
  • Showing an effort when breathing
  • Blue tongue or lips (cyanosis)
  • Collapse
Types
Pulmonary edema can be broken down into two types:
Cardiogenic Pulmonary Edema
  • Secondary to left sided congestive heart failure
  • Sodium and water retention increase the circulatory volume and venous pressure leading to fluid build-up
  • A history of heart trouble (known or unknown) may be present
Noncardiogenic Pulmonary Edema
  • Accumulated fluid has a higher concentration of protein, and the capillary pressure is normal
  • The trigger for a noncardiogenic event will be trauma, for example.
Causes of Fluid in the Lungs in Dogs
The causes for fluid accumulation in dogs can be numerous.
Cardiogenic Pulmonary Edema
  • High sodium diet
  • Dilated cardiomyopathy (enlarged heart)
  • Hypertrophic cardiomyopathy (thickening of walls of the heart)
  • Mitral valve regurgitation (heart valve does not close properly, allowing blood to flow back into the heart)
Noncardiogenic Pulmonary Edema
  • Electrocution
  • Trauma to the head
  • Secondary disease such as cancer
  • Drowning
  • Smoke inhalation
Diagnosis of Fluid in the Lungs in Dogs
The veterinarian may choose to begin with a diagnosis of exclusion to rule out possibilities such as an obstruction, heartworm, or pneumonia. Your pet’s weight will be verified. (Note that cardiac disease often presents with a very underweight pet.) Upon verification, it may be found that your dog may have a fast heart rate and a weak pulse.
The test of choice to diagnose fluid in the lungs is a thoracic x-ray. If your dog has cardiogenic pulmonary edema, your veterinarian may find an enlarged heart, distended pulmonary veins, and fluid in the alveoli.
A chest x-ray that shows fluid throughout the lungs, and without an enlarged heart points to a noncardiogenic diagnosis. The echocardiogram may also be normal.
Measurement of protein in the fluid (possible only through intubation, or if your dog is coughing up fluid) can lead to diagnosis also. Cardiogenic pulmonary edema will show low levels of protein, while noncardiogenic presents with high protein levels in the fluid.
Treatment of Fluid in the Lungs in Dogs
Treatment will depend on the reason for the fluid, but in any case the first step will be to stabilize your dog. Oxygen therapy may be started, along with antibiotics to prevent pneumonia.
Cardiogenic Pulmonary Edema
In this case oxygen, rest and diuretics (to hasten the removal of fluid) will be used. Also, vasodilators (to widen blood cells) might be necessary, depending on the situation. The veterinarian will carefully monitor your pet’s blood pressure, heart rate, and respiratory rate during the hospitalization period. Repeat x-rays may be ordered by the veterinarian in order to observe the lung fluid levels. Heart disease is a chronic problem, so it is possible the edema may return.
Noncardiogenic Pulmonary Edema
Controlling the causative factor is an important part of the treatment protocol in this instance. Depending on the cause and severity, your dog can improve rapidly with oxygen therapy. Antibiotics, intravenous fluids and colloids, diuretics, and anti-inflammatories will be administered as needed, depending on the edema cause. Again, blood pressure, respiratory rate, body temperature, and oxygen saturation will regularly be checked during treatment.
In both cases, your dog will benefit from the least amount of stress possible during hospitalization.

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Recovery of Fluid in the Lungs in Dogs
It is very important to distinguish which type of pulmonary edema is affecting your dog in order to determine the appropriate follow-up.
In the case of cardiogenic pulmonary edema, a low sodium diet along with medication to repair and strengthen the heart will be required. Noncardiogenic follow up is less specific, and depends on the origin of the problem. Successful treatment of the underlying disease or trauma is key to recovery.
In both cases, follow-up visits with the veterinarian will be vital for the continued health of your pet. The veterinarian will want to repeat diagnostic tests as necessary (such as x-ray to verify fluid levels) and prescribe any medications needed to hasten recovery. As the owner of a dog who has experienced pulmonary edema, you should always be aware of your pet’s breathing patterns and promptly visit the clinic to discuss irregularities.
Fluid in the Lungs Average Cost
From 135 quotes ranging from $1,200 - $8,000
Average Cost
$5,000
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Fluid in the Lungs Questions and Advice from Veterinary Professionals
Chow Shepherd pitbull
Ten Years

31 found this helpful

31 found this helpful

My pet has the following symptoms:
Fluid In Abdomen
The vet has drained the fluid from our dog 3 times now hes so big that his feet are splitting and fluid is leaking out from his feet . He can barely walk and drinks excessive amount of water
June 24, 2021
Answered by Dr. Linda S. MVB MRCVS
31 Recommendations
I'm sorry to hear this. Your dog sounds very unwell indeed. If the cause of his symptoms (perhaps low blood protein or heart disease) cannot be controlled, would it be an option to see a specialist for a 2nd opinion? This doesn't sound like something that can continue. If his quality of life is poor and his prognosis is grave, euthanasia is also something we should consider.
June 24, 2021
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Chihuahua
Ten Years

45 found this helpful

45 found this helpful

My pet has the following symptoms:
Noisy Breathing
She’s drinking excessive amounts of water, ,increased urination which is causing her to have inconveniences .?. , I put my stethoscope up to her lungs and it does sound like she’s retaining fluid in her lungs which is most likely causing her breathing to sound the way it is. So I guess my question is, is there anything I can do to decrease the fluid in her lungs at this time for her breathing ? I just concerned and I couldn’t get a sooner appointment before this coming Thursday. Please lmk Thank you.
Jan. 10, 2021
Answered by Dr. Linda S. MVB MRCVS
45 Recommendations
I'm very sorry to hear this. If she does indeed have fluid on her lungs she needs medicine (such as diuretics) immediately. I would contact your vet and express the seriousness of the situation but, if the cannot schedule a sooner appointment, I would seek an emergency vet.
Jan. 10, 2021
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rott
3 Years

7 found this helpful

7 found this helpful

My pet has the following symptoms:
She had gotten in a fight about a week prior to giving birth. We lost the pups. I turned her every 2 hours. Made sure she got her meds. Surgery was on a sat. Mon she got up and moved out of her secure area but seemed alert and doing good considering. I got her settled back down but noticed she kept putting her head up on the wall. I'd lay her back down and she'd put it back up there. She stayed like that all night. I took her back to the vet at 6:30am that wed. We got there and she quit breathing about 10 min in the car. Could she have gotten pneumonia? I noticed fluid running out of her mouth
Dec. 29, 2020
Answered by Dr. Maureen M. DVM
7 Recommendations
Hi, Sos sorry about this. Head pressing is a neurological sign. Could be that she got an injury on the head during the fight which could have led to the brain swelling. In such situations it can be hard to tell the extent of the injuries without doing imaging such as CT Scans or MRI. I'm really sorry.
Jan. 24, 2021
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maltese poodle
Eleven Years

13 found this helpful

13 found this helpful

My pet has the following symptoms:
Hacking Attacks
Sammy has hacking attacks where he struggles to get a breath. He has been diagnosed with leukemia which we have decided not to treat. After an attack he will pick up a toy and start playing. Some days it is really bad and other times nothing
Dec. 16, 2020
Answered by Dr. Linda S. MVB MRCVS
13 Recommendations
I'm sorry to hear this. This may or may not be associated with the leukaemia. There are many possible causes such as a collapsing trachea, heart disease, chronic bronchitis, cancer in the lungs etc. It would be best to have a check over to see what is going on. It may be that some treatment (such as tablets) will help and improve his quality of life.
Dec. 16, 2020
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English Bulldog
Six Years

7 found this helpful

7 found this helpful

My pet has the following symptoms:
Other
My bull dog instantly has this lump in chest area feels like filled w fluid and can see if when she walks doesn’t seem bother her but I noticed it there
Sept. 29, 2020
Answered by Dr. Michele K. DVM
7 Recommendations
Thank you for your question. Dogs can develop cysts, infections, or areas of bruising or trauma, depending on what might have happened to cause this lump that you have noticed. Since it seems to be happening suddenly, the best thing to do would be to have your dog seen by a veterinarian who can examine her, see what this might be, and let you know what treatment options may be available if any are needed. I hope that all goes well for your dog.
Sept. 30, 2020
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Cocker Spaniel
Scout
11 Months

0 found this helpful

0 found this helpful

My pet has the following symptoms:
Drooling
Fluid In Lungs
Wheezing
On Tuesday, I took my 11 1/2 month old cocker spaniel to Pet Supplies Plus to get groomed. The groomer called 1.5 hours later to let me know he was ready but she wasn't able to clip his nails because he got worked up. When I picked him up, he seemed scared. I assumed it was because he was scared and wanted to leave due to the situation with the nail clipping attempt. As I was driving home, I had to pull over to check on him because he seemed unusual. He was breathing abnormally and not responding to my attempts to get him excited with phrases we use. When I took him home I knew something wasn't right. He was drooling, had a slight wheeze, and a moanlike noise coming from him. I took him to the vet and he was eventually diagnosed with noncardiogenic pulmonary edema. After 14 hours of treatment (oxygen therapy, antibiotics - intial diagnoses of pneumonia, and nebulizer) the vet called to say they didn't think he would make it another 1-2 hours. The vet informed me that his oxygen levels went from 92 the night before when I dropped him off to 76 the next morning and suggested going to a specialist. At one point his respiratory rate went to 120. Therefore, we took our baby to Purdue and they put him on a ventilator by 1 pm. Around 3:30 am the next day he took a turn for the worse and they had to physically elevate him to help with drainage that included blood. They called me at 5 am that there isn't much they can do since he hasn't shown any sign of improvement with all the treatment. Therefore, when we arrived at Purdue we said our goodbyes and allowed then to euthanize. Background: He has vomited small amounts of mostly clear phlem a week prior and the morning of his grooming appointment. Other then that he was a HAPPY, LOVING, HEALTHY puppy. We are extremely heartbroken and can't believe this happened. All the vets we encountered said the trachea/bronchial area can easily get damaged and result in noncardiogenic pulmonary edema. Is it possible he was injured at the groomer during the "2-3 seconds" she tried to clip his nails for the lungs to fill up that quickly? She said he panted afterwards, calmed down, and then she gave him a bath. Or could this have been something in the works for a time?
Maltipoo
Hamish
11 Years

0 found this helpful

0 found this helpful

My pet has the following symptoms:
Gagging
Sneezing
Coughing
Wheezing
Hi, My dog is a Maltese terrior x poodle and he was experiencing a lot of wheezing and coughing to the point where he was gasping for air. Took him to the vet and they said his left side is a bit congested. The vet put him on antibiotics and cortisone. Whilst on the antibiotics the symptoms drastically went away but once the course of antibiotics finished his coughing started to return (nowhere near as bad as previously but still not 100%). We took him back to the vet and they did chest X-rays and said he may have chronic bronchitis as there was still congestion in the lungs with possible lung scarring. So she put us on a different antibiotic (doxycycline) and continued the microlone for a month. I showed a different vet the xrays and he said he has an enlarged heart/congestive heart failure on both sides hence the lung congestion and to add lasix to his medication. The 1st vet did not mention hamish’s heart when showing me the X-ray and she said he actually had a strong heart when listening to it with her stethoscope. Just wondering if the 2nd vet is more on the right track? And what’s the best thing to do from now on?
Chihuahua
mumf
7 Years

1 found this helpful

1 found this helpful

My pet has the following symptoms:
Sneezing
Hacking
Weezing
Crackling
Increased Water Drinking
Light Red Tounge
Elivated Liver Enzymes
I have a 7 year old Chihuahua. He always sounds like "he is full of muccus or fluid". It gets worse at night and when he is laying in certain posistions but for the most part its contentious. He sneezes and backwards sneezes several times a day. He makes crackling noises on occatsion to almost clear the fluid. His tounge to me also looks a bit dull in color. My vet took a listen with to his heart and breathing said he sounds fine. He is currently on Ursodile for elivated liver values and hypatio support for liver as well. Im at a loss as two vets have done minimal tests besides a listen and a look over and say he is fine. However, the WORST of the weezing/snoring/backwards sneezing comes at night. help?
Chihuahua
Anita
14 Years

2 found this helpful

2 found this helpful

My pet has the following symptoms:
Lethargic, Not Eating Or Drinkin
I had a 14 year old Chihuahua who passed two days ago. She was diagnosed a year ago with Con genitive heart failure. She was on Furosemide, Vetmedin and Enalapril. She was doing fine until last week. She would drink water but not eat. She was using the bathroom okay. I took her to the vet and they told me the heart med she was on originally affected her liver. They said the liver was extremely enlarged. They gave me an alternative heart med,antibiotic and told me to give her soft dog food and crush her meds into a syringe to get her to eat. After the first two days she acted better and started eating on her own. Then, on the third day it was back to giving her food in the syringe because she would not eat. She would lay there just staring and when she tried to get up her legs would collapse. The vet said she was in the final stages. She slept most of the day and later that night I could tell she was having a hard time breathing. I held her in my arms until she passed. My question is was there something more that could have been done? I feel guilty because I keep thinking what if they could have saved her somehow? I did not want to have her put down. I wanted her to pass in her own home and bed surrounded by her family. Was there something else I could have done at that point?
Shitzu x bichon freis = zuchon
No 3
9 Days

0 found this helpful

0 found this helpful

My pet has the following symptoms:
Cracking
Crackling Breath
I have a 9 day old zuchon puppy,1 of 4,no issues with birthing.1 puppy which is slightly smaller than the others has over last day, displayed crackling noises when feeding.this seems to subside when pups asleep.I have pups and mum in my bedroom.I have over the last week had a chest infection.Could this by chance pass to my puppy,as all was well and I'm worried for the little fella.feisty.no issue with movement.just has developed this crackling breathing when feeding.
Fluid in the Lungs Average Cost
From 135 quotes ranging from $1,200 - $8,000
Average Cost
$5,000

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