06/07/2021
It is the time of year for Heartworm Prevention! Warm summer months are the prime time for mosquito populations to thrive. With that comes the threat of mosquito-borne diseases for pets, specifically heartworm infections in dogs and even cats. Read this case study for more information. 🐱🐶🩺🩸
🩺🩸Past Medical History: Ginger is a 2-year-old, female sheltie who presented to the clinic for her routine wellness examination and vaccinations. The owner reported no recent weight loss or changes in activity. The owner has used flea, tick, and heartworm preventative in the past, but only intermittently.
🩺🩸Examination: Normal Findings
🩺🩸Laboratory Results: Chemistry Profile: Normal, Blood Profile: Normal, Heartworm Test: Positive
🩺🩸Radiographs: X-rays were recommended to assess the heart shape and ensure there has been no damage to the heart. Ginger’s thoracic radiographs showed mild pulmonary vasculature enlargement.
🩺🩸Diagnosis: Ginger contracted dirofilaria immitis (heartworms) through an infected mosquito. The worms invade the vasculature endothelia and pulmonary vessels.
🩺🩸Treatment: Ginger was started on an antibiotic called doxycycline for thirty days. This antibiotic kills wolbachia which is bacteria that live within the heartworm. Killing the wolbachia makes the adult heartworms easier to kill. After 30 days, she was hospitalized and given injections to kill the adult heartworms. She was also started on an anti-inflammatory dose of prednisone. She was discharged to her owner with exercise limitations for the next thirty days. Ginger finally returned for an injection to the kill the microfilaria or immature heartworms. Once it was verified the adult heartworms were killed, she was started on a routine heartworm preventative to avoid reinfection.
It is very important to administer heartworm prevention to your animal throughout the year, not just during the summer. There are several different products that are safe and provide protection against heartworm disease. These include monthly tablets with or without flea control, topical products applied monthly, and now there is an injection that prevents heart worms for 12 months.