Subvalvular aortic stenosis

Subvalvular aortic stenosis

- Subaortic stenosis (SAS)

- Canine subvalvular aortic stenosis (SAS)

Rottweilers are a breed which has a high incidence of an abnormal heart sound, or murmur, caused by Subaortic stenosis (SAS).

SAS being a congenital defect, means that is present from birth. There is also very good evidence that it is also heritable, passed on from generation to generation genetically. This genetic trait is what is called polygenic, so that the inheritance is complex. An animal might have the genes for SAS, yet have no actual sign of SAS. Also, an animal might have signs of Subaortic stenosis, and yet offspring with signs of SAS may not be seen for a couple of generations. Any animal that has Subaortic stenosis should not be bred, because they can definitely pass the defect on to future offspring. There is some controversy as to whether the parents of an animal with SAS should be bred again.

Heart murmurs are graded on a scale of 1 to 6, with one being very mild and six being very serious Murmurs can exist due to a large number of heart problems ( infection, trauma, anemia, etc.) and some murmurs are innocent, meaning that no cardiac pathology exists. Tests such as chest X-rays, echocardiography, and electro-cardiography can be performed to evaluate the severity of the situation

Aortic stenosis in the Rottweiler appears to be true subvalvular aortic stenosis (SAS) (similar to that in the Newfoundland dog) as opposed to the valvular form (seen more in boxer dogs) or the supravalvular form sometimes seen in people.

The condition is usually detected during puppy visits to the veterinarian by hearing a heart murmur during physical examination. A heart murmur is the abnormal sound of blood rushing through one of the heart valves. Instead of just the heart beat, a whistle of blood flow through a narrowed opening is heard. The puppy will most likely appear normal in all other respects. There is a possibility that the murmur may come and go, or it may develop slowly; therefore, it is important to have a veternarian check a puppy's heart often during the first few months of age. This is a very frustrating condition to be identified in your pet because the future is bleak and the chance for long term survival is low. Puppies and dogs diagnosed with Subaortic stenosis can suffer from heart failure and sudden death. If your dog with SAS develops heart failure, medications can be prescribed to alleviate the clinical signs it is experiencing.

The OFA has established a Congenital Heart Registry whose guidelines were established by veterinary cardiologists. A dog at 12 months of age, which auscultates normally is considered to be free of congenital heart disease Upon confirmation of this, the OFA will issue a certificate.

http://rottweilerhealth.org/rott_healthissues.html
http://rottweilerhealth.org/pdfs/grant2620_SAS_findings.pdf
http://www.adoptagolden.com/k9stuff/vetcorner/stenosis.htm
http://www.rottclub.ca/subarotic.html


Wikimedia Foundation. 2010.

Нужно решить контрольную?

Look at other dictionaries:

  • subvalvular aortic stenosis — subaortic s …   Medical dictionary

  • aortic stenosis — Pathol. abnormal narrowing of the aorta, esp. of its orifice, usually as a result of rheumatic fever or embryologic anomalies. * * * ▪ pathology       narrowing of the passage between the left lower chamber (ventricle) of the heart and the aorta …   Universalium

  • Aortic stenosis — Narrowing (stenosis) of the heart valve between the left ventricle of the heart and the aorta. This narrowing impedes the delivery of blood through the aorta to the body and makes it tough for the heart to carry out this Herculean task. A normal… …   Medical dictionary

  • Stenosis — A narrowing, as in aortic stenosis (narrowing of the aortic valve in the heart), pulmonary stenosis (narrowing of the pulmonary valve in the heart), pyloric stenosis (narrowing of the outlet of the stomach), spinal stenosis (narrowing of the… …   Medical dictionary

  • Mitral stenosis — Classification and external resources Mitral stenosis with marked thickening of the leaflets and left atrial hypertrophy. Superior view. Autopsy preparation …   Wikipedia

  • List of diseases (S) — A list of diseases in the English wikipedia.DiseasesTOC NOTOC Sa Sc Se Sh Si Sj Sn So Sp Sq Ss St Su Sw Sy aSaa Sak Sal Sar Sat Say aa Sal* Saal Bulas syndrome * Saal Greenstein syndrome * Sabinas brittle hair syndrome * Saccharopinuria * Sackey… …   Wikipedia

  • Rottweiler — Infobox Dogbreed akcgroup = Working akcstd = http://www.akc.org/breeds/rottweiler/index.cfm ankcgroup = Group 6 (Utility) ankcstd = http://www.ankc.aust.com/rottweil.html ckcgroup = Group 3 Working ckcstd = http://www.ckc.ca/en/Default.aspx?tabid …   Wikipedia

  • Golden Retriever — Infobox Dogbreed kcukstd = http://www.thekennelclub.org.uk/item/108 ukcgroup = Gun Dog akcgroup = Sporting akcstd = http://www.akc.org/breeds/golden retriever/index.cfm ankcgroup = Group 3 (Gundogs) ankcstd = http://www.ankc.aust.com/goldret.html …   Wikipedia

  • Newfoundland (dog) — Newfoundland A typical black Newfoundland Nicknames Newf, Newfie, The Gentle Giant Country of origin Canada / England Traits Weight …   Wikipedia

  • Heart valve — In anatomy, the heart valves are valves in the heart that maintain the unidirectional flow of blood by opening and closing depending on the difference in pressure on each side. The mechanical equivalent of the heart valves would be the reed… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”