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| |pagetitle =Cardiovascular System - Developmental Pathology | | |pagetitle =Cardiovascular System - Developmental Pathology |
| |pagebody = <div style="text-align: left; direction: ltr; margin-left: 1em;"> | | |pagebody = <div style="text-align: left; direction: ltr; margin-left: 1em;"> |
| + | '''Introduction''' |
| + | Congenital heart disorders are structural and/or functional abnormalities that are present at birth. These defects are the result of either inherited abnormalities or insults to the fetus in utero. The most common conditions are listed below. |
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| Congenital abnormalities occur relatively commonly in young (approximately 1% all human births). May produce dramatic clinical signs or signs may be vague, such as failure to thrive. Clinical signs may become more apparent as the animal grows and activity levels increase. | | Congenital abnormalities occur relatively commonly in young (approximately 1% all human births). May produce dramatic clinical signs or signs may be vague, such as failure to thrive. Clinical signs may become more apparent as the animal grows and activity levels increase. |
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| *Environmental; Includes infection (usually viral), chemical, nutritional and physical factors. | | *Environmental; Includes infection (usually viral), chemical, nutritional and physical factors. |
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− | Understanding the [[Developmental Anatomy of the Heart - Anatomy & Physiology|normal development of the heart and great vessels]] allows an understanding of the morphology and pathology of the congenital abnormalities seen in mammals. | + | Understanding the [[Heart Development - Anatomy & Physiology|normal development of the heart and great vessels]] allows an understanding of the morphology and pathology of the congenital abnormalities seen in mammals. |
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− | ===Tricuspid Dysplasia===
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− | ==Miscellaneous==
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− | ===Peritoneo-pericardial Diaphragmatic Hernia===
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− | Represents an embryological malformation of the ventral midline with communication to varying degress of the pericardial sac and the [[Peritoneal cavity - Anatomy & Physiology|peritoneal cavity]]. Often associated with other malformations for example sternal deformities and [[Heart and Great Vessels Development - Pathology#Ventricular_Septal_Defect|ventricular septal defects]].
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− | Usually results in gastrointestinal or respiratory signs.
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− | Visible radiologically as a round cardiac silhouette which merges with the diaphragm. The trachea will be displaced dorsally. Intestines may be visible on radiographs. Repaired surgically.
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− | ===Ectopia Cordis===
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− | The heart is normal in anatomy but situated in an abnormal location within the body. Cattle and pigs show the highest incidence. The heart may be found in the cervical region or the abdomen.
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− | ===Endocardial fibro-elastosis===
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− | Seen in Burmese kittens. Collagen and elastin are deposited in the endocardium, limiting its function. Animals are often found dead at 2-3 months of age.
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| [[Category:Cardiovascular System - Pathology]] | | [[Category:Cardiovascular System - Pathology]] |