But the fragments of dead heartworms can cause serious complications and even death, so it is absolutely essential that the dog be kept quiet and avoid exercise for a full month following treatment. (leandervetclinic.com)
After any heartworm treatment, the antigen heartworm tests have a greater incidence of false positive results since the test is for antigens that are released from dead heartworms as well as live heartworms. (scenichillsvet.com)