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Exertional Dyspnea. Shortness of breath during exercise (exertional dyspnea) produces a sensation of not being able to get enough air and a feeling of being out of breath..A number of factors can cause exertional dyspnea, but they are usually related to insufficient tissue oxygenation by the blood.xertional Dyspnea. Shortness of breath during exercise (exertional dyspnea) produces a sensation of not being able to get enough air and a feeling of being out of breath..
Read by: 189,453 pet lovers. Respiratory distress, often called dyspnea, is labored, difficult breathing or shortness of breath that can occur at any time during a cat's breathing process, during inspiration (breathing in) or expiration (breathing out). When your cat has trouble breathing, he may not be able to get enough oxygen to his tissues.