Health News from past National Specialties

HEALTH NEWS FROM THE 2011 NATIONAL SPECIALTY
1. View the Report from Cardiac Clinic- PDF file.
Echo (CARDIAC) CLINIC SUMMARY: Eighty-seven (87) Great Danes received cardiac evaluations, including auscultation and echocardiography, during the clinic held on November 2 & 3, 2011. Dr. William Tyrrell, Jr., DVM, DACVIM (Board Certified Veterinary Cardiologist) performed all cardiac evaluations. Several previously undiagnosed cardiac conditions were identified and owners were advised as to follow-ups recommendations on a written report provided by Dr. Tyrrell.
Of the 87 Great Danes examined during the echo clinic in 2011, 46 were males and 41 were females. Eighty of the 89 Great Danes which underwent echocardiography at the 2011 GDCA National were deemed normal, however 10 defined as normal were found to have a murmur with high normal left ventricular outflow velocities and 38 were found to have trace to mild mitral and/or aortic valve regurgitation. All but 16 Great Danes tested (71) were under the age of four years. All colors of Great Danes were represented. Further details on the demographics will not be presented in order to prevent unintentional disclosure of specific dogs who participated in the echo clinic.

Females again in 2011 showed a slightly higher prevalence of abnormal echo, but the large difference between the early reports (2008-2010=3 yrs) and 2011 was the re-categorization of some Danes as now “normal” who are in a “gray area” (open to interpretation) that experience in our breed has led experts such as Dr. Tyrrell to consider normal at least for our breed. So he is no longer categorizing as “equivocal” or “abnormal” AS/SAS potential dogs with high left ventricular outflow velocities (LVOT) between 170-225 cm/s (Ave) and Danes with chronic degenerative valve disease (CDVD) are now considered “normal” as this is a common enough finding without real genetic or clinical impact so as not to be considered pathological in the Great Dane. Culling such animals from breeding programs was never recommended, but this offers owners/breeders a chance to have any such “abnormals” reexamined and this newer interpretation of the data, borne from further experience, to be the guide.

Overall, less than 10% (7 of 87=8%) of the Great Danes screened at this 2-day clinic had a cardiac abnormality detected via echocardiogram.

HEALTH NEWS FROM THE 2010 NATIONAL SPECIALTY
1. View the Report from Cardiac Clinic- PDF file.
Echo (CARDIAC) CLINIC SUMMARY. Approximately 53% of Great Danes examined screened normal: 47% had some form of cardiac abnormality. A variety of heart diseases and congenital cardiac problems were diagnosed with degenerative valvular disease & aortic stenosis representing the largest two categories. Most of the abnormalities found were newly diagnosed at this clinic. Only one definite case of DCM was diagnosed, probably due to the young age of most participants. However four males & two females had arrhythmias during the exam; this may represent early stage cardiomyopathy. Many of the abnormalities detected are diagnoses which would make it inadvisable for the dogs to be bred, and in several cases the information provided via early detection can have a positive impact on the individual dog's health. Owners were advised as to follow-ups recommendations on a written report provided by Dr. Tyrrell.

Please note: Confidentiality was maintained completely with this project. The table presenting the results of the echo clinic came directly from Dr. Tyrrell, the attending cardiologist "as is." That is, the GDCA received the charts just as presented: neither the volunteers at the echo clinic nor any members of the GDCA have access to the results of individual dogs, or know which dogs had positive findings. We deliberately chose not to break down the demographics in the more detailed report to avoid compromising anonymity. Brian January, Chmn, Health/Education, SC Division.

 

HEALTH NEWS FROM THE 2009 NATIONAL SPECIALTY

1.View the Report from Cardiac Clinic- PDF file.
CARDIAC CLINIC SUMMARY. Approximately 64% of Great Danes examined screened normal: 36% had some form of cardiac abnormality. A variety of heart diseases and congenital cardiac problems were diagnosed. Most of the abnormalities found were newly diagnosed at this clinic. Only one definite case of DCM was diagnosed, probably due to the young age of most participants. However three additional males were equivocal for DCM & three males had arrhythmia during the exam; this may represent early stage cardiomyopathy. Many of the abnormalities detected are diagnoses which would make it inadvisable for the dogs to be bred, and in several cases the information provided via early detection can have a positive impact on the individual dog's health. Owners were advised as to follow-ups recommendations on a written report provided by Dr. Tyrrell.

Please note: Confidentiality was maintained completely with this project. The table presenting the results of the echo clinic came directly from Dr. Tyrrell, the attending cardiologist "as is." That is, the GDCA received the charts just as presented: neither the volunteers at the echo clinic nor any members of the GDCA have access to the results of individual dogs, or know which dogs had positive findings. We deliberately chose not to break down the demographics in the more detailed report to avoid compromising anonymity. JP Yousha, Chmn., H&R Committee & Margaret Shappard, Chmn, Health/Education, SE Division.

 

HEALTH NEWS FROM THE 2008 NATIONAL SPECIALTY

1. View the Report from the Cardiac Clinic - PDF file.
Approximately 64% of Great Danes screened normal. 36% had some form of cardiac abnormality. Only one definite case of DCM was diagnosed, probably due to the young age of most participants. There were a variety of other heart diseases and congenital cardiac problems diagnosed. Most of the abnormalities found were newly diagnosed at this clinic. Two males had arrhythmia during the exam. This may represent early stage cardiomyopathy. Many of the abnormalities detected are diagnoses which would make it inadvisable for the dogs to be bred. Owners were advised as such on a written report provided by Dr. Tyrrell. Several additional, equivocal cases will require follow-up to determine if they progress into definite disease over the coming months.

Please note: Confidentiality was maintained completely with this project. The table presenting the results of the echo clinic came directly from Dr. Tyrrell, the attending cardiologist "as is." That is, the GDCA received it just as it's presented: neither the volunteers at the echo clinic nor any members of the GDCA have access to the results of individual dogs, or know which dogs had positive findings. We deliberately chose not to break down the demographics in my larger report because doing so might enable the reader to figure out who the affected dogs were. Mary Anne Zanetos

2. View the Blood Transfusion Presentation - Mary Anne Zanetos - In PDF format

 

Permission to reprint as submitted for educational purposes is given. 
Submitted by JP Yousha, Chair, H&W Committee, GDCA 2008

 

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