Tracheal collapse in dogs is a severe and debilitating disease. It can result in complete obstruction of the airways and instant death when it’s not properly controlled.
Many techniques of managing tracheal collapse have been described in veterinary science over the years.
Some involve surgical procedures, other medication, but the truth is that there isn’t an ideal strategy that treats this difficult disease.
The trachea is the windpipe that connects the upper respiratory structures (nose, mouth, and throat) to the lower respiratory structures (lungs).
Its anatomical features make it quite a rigid and strong structure. Basically, it’s a muscle that connects cartilage rings.
The rings are in the form of the letter ‘C’ and don’t form full circles.
The open end of rings faces the animal’s back and it’s covered with a membrane sometimes referred to as the trachealis muscle.
Breathing happens when the flat muscle (diaphragm) that separates the chest cavity from the abdominal cavity flattens while in the meantime the muscles between the ribs (intercostal muscles) move – the air gets in the lungs due to change of pressure.
When the same muscles move oppositely the air is pushed out.
In this physiological activity, the trachea is a pathway used to bring the air into the lungs.
One part of it located inside the chest (intrathoracic portion) and one part outside the chest (extrathoracic portion).
Tracheal collapse in dogs is a chronic disease with progressive character, unfortunately, with irreversible character.
The condition is most prevalent among toy breed dogs. Commonly affected breeds include Pomeranians, Poodles, and Yorkshire Terriers.
Most of the time the first symptoms become apparent when the dog is middle-aged, although they can occur at any age.
Dog Tracheal Collapse Causes & Symptoms
When the cartilage rings of the tracheal wall weaken, the whole organ collapses.
The weakening of the rings is called tracheomalacia – the rings simply become soft and spongy. The usual ‘C’ shape of the rings loses its curvature and form.
All of that makes the tracheal membrane on the open end stretch. Stretching makes the trachealis muscle loosen and become floppy.
The once rigid muscle now oscillates when air passes through the windpipe.
When the trachea collapses inside the chest, breathing-in causes the membrane to balloon outward, and exhaling results in occlusion.
The moment the membrane touches the tracheal lining the tickling feeling makes the dog cough.
If the obstruction completely blocks the air passage dogs become severely distressed.
If the trachea collapses in the neck (extrathoracic) the occlusion happens when the dog breathes in and the membrane balloons while exhaling.
Worst case scenario is when the cartilage rings become soft and spongy near the bronchi. The bronchi are two large airways feeding each lung.
Patients with such conditions have the worst type of coughing and the worst prognosis.
Most frequently the trachea collapses at the place where it enters the chest through the diaphragm.
What causes a tracheal collapse in dogs remains a controversial subject.
The fact that some of the signs appear when dogs are 6 months of age or less supports the theory that the abnormality of the cartilage rings is of congenital origin.
In contradiction, the progression of the symptoms later on in life indicates that the problem could be acquired after birth.
The most probable is the third theory supporting both previous.
Tracheal collapse is indeed a congenital disease, but secondary factors are necessary to initiate the condition to become symptomatic later on in life.
Secondary factors include:
- Airborne irritants (dust, cigarette smoke, allergens)
- Anesthesia and placing of endotracheal tubes
- Respiratory infections (most commonly kennel cough)
- Congestive heart failure
- Excessive barking
In more than half of the cases of dog tracheal collapse, there has been one of the concurrent problems listed above that contribute to making it a clinically significant condition.
Often, taking care of the secondary factors clears the symptoms of tracheal collapse as well (weight loss, air filters, etc.).
Clinical symptoms associated with tracheal collapse include:
- Dry cough – often described as goose honk cough
- Labored breathing
- Exercise intolerance
- Coughing when the dog is picked up
- Coughing when someone pulls the dog’s collar
- Cyanosis (blue gums)
- Collapse after excitement
- Wheezing when breathing in
The symptoms get more apparent when there is an inflammation in the trachea.
Due to the collapse the surface of the windpipe gets inflamed and the secretion increases.
The dog starts coughing more often because of it. The inflammation worsens and the products of the inflammation soften the tracheal rings even more.
If left untreated the tracheal tissue undergoes irreversible changes making the condition unbearable.
How Long Can a Dog Live With a Collapsing Trachea?
Dogs with mild to moderate symptoms can live a quality life without significant shifts in life-expectancy according to breed with proper medications.
Therapeutic management is life-long and the contributing factors must be addressed as well. If that means you planned on quitting smoking, this is the right time to do it.
Since dogs with collapsed trachea have a hard time getting rid of infectious microorganisms from the lungs they will need to be periodically treated with antibiotics.
Tramadol, hydrocodone, and other cough suppressants might come in handy when the pup experiences harsh coughing episodes.
To decrease the inflammation and reduce the mucus secretion inside the trachea prednisone and similar corticosteroid hormones are indicated for treatment.
However, there are potential side-effects of long-term use so they need to be taken into consideration with caution.
Because they suppress the immune response, corticosteroids can promote infection that damages the cartilage even more.
Minimizing the side effects of corticosteroids can be achieved by delivering the medication in the form of spray directly with inhalers.
The prognosis is not favorable for more complicated cases though.
It highly depends on how progressed the tracheal collapse is and whether there are other treatable or non-treatable concurrent diseases that contributed to the condition.
An emergency reaction due to tracheal collapse is necessary when the dog in severe respiratory distress.
The gums are an indicator as they become bluish due to the lack of oxygen in the blood.
The vet will stabilize the dog with tranquilizers to relieve the anxiety and oxygen therapy in addition to the usual medications.
When medications don’t help alleviate the symptoms dogs need to go to surgery.
There are two types of procedures being performed – placing a tracheal stent and placing steel tracheal rings.
The first procedure is more frequently performed in the last few years.
The average life-span for dogs that needed to go to surgery is around 2 years, though many will live for 2-3 years more.
One more thing worth mentioning is the grade of the tracheal collapse which will determine the course of actions that need to be taken.
- Grade 1 – the ring remains in normal shape, the membrane is loose and the space in the trachea is reduced by 25%
- Grade 2 – the rings are slightly flattened, the membrane is wide and loose and the space in the trachea is reduced by 50%
- Grade 3 – the rings are almost flat, the membrane is in contact with the surface of the trachea, and the space in the trachea is reduced by 75%
- Grade 4 – the cartilage is completely flat, the membrane is lying on the trachea, and space in the trachea is completely closed
Once the symptoms become so severe that the quality of your dog’s life is minimal it might be better to put him to sleep.
Euthanizing is indicated when the pup fights for every breath and no medication can help him feel better anymore.
If your dog is not able to enjoy his life anymore and just behaving lethargically, you may have to might this difficult call.
As the disease is so progressive, the end stages may be reached within a few years, and dying from respiratory distress is one of the most terrifying ways to go.
Can Collapsing Trachea Kill a Dog?
A collapsing trachea can kill a dog. The narrowing of the space inside of the trachea can be so serious that not enough air can get into the lungs.
In such a case the dog will die of respiratory distress.
Most of the time the condition won’t progress so far and the symptoms will only be limited to coughing and exercise intolerance.
Dog Tracheal Collapse Home Treatment
One of the ways to help your dog feel better with home treatment in addition to traditional treatment is by adding omega-3-fatty acids and antioxidants to his diet.
These compounds have anti-inflammatory properties that will calm down the surface of the trachea.
Patients with collapsed trachea need to live stress-free lives because anxiety makes things even worse.
Holistic vets often prescribe CBD, flower essence, and aromatherapy as they are excellent ways to calm your pup’s nerves down.
Benadryl for Tracheal Collapse
Benadryl is an antihistaminic widely used in dogs.
The only time it can be given to patients with tracheal collapse is when allergies are suspected to be the secondary trigger for the condition.
Otherwise, Benadryl won’t have any effect on a collapsed trachea because the problem is of anatomical nature.
Bronchodilators for Dogs
Airway dilators or bronchodilators are used to treat coughs in dogs that are a result of bronchoconstriction or bronchospasm.
The two most widely used bronchodilators in dogs are Theophylline and Terbutaline. Their use in treating tracheal collapse is controversial.
Although they can dilate the lower respiratory portions, they might not have any effect on the trachea itself.
However, since the lower airways will be dilated, the pressure in the thoracic cavity might not be so big and the trachea won’t collapse as greatly when breathing in.
Disclaimer: This blog post doesn’t substitute veterinary attention and does not intend to do so. If your dog shows any signs of illness, call your vet immediately.