ventral hernias

Apr 15th, 2015
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ABDOMINAL WALLHERNIASII(VENTRAL HERNIAS)DR. GEORGE W. O. MUGENYAMBChB, MMed, FCS (ECSA)HERNIASDefinition:Protrusion of a viscus or part of itthrough a defect in the wall of thecontaining cavity.Classification of hernias Congenitalor acquired. Abdominal or extra-abdominal. Internal or external.Hernia CharacteristicsProtrusion of the peritoneum or preperitoneal fat through an abnormal openingin the abdominal wall.Presents as a bulge.Peritoneal contents may be trapped in sac.Asymptomatic bulge is most common.Symptoms consists of: Physical effects of sac and contents onsurrounding tissues. Obstruction and/or strangulation of herniasac contents.Abdominal HerniasGroin Hernia (75 %): Inguinal Hernia Femoral HerniaVentral Hernia (25 %): Umbilical Hernia (congenital in children) Paraumbilical Hernia (adults) Epigastric Hernia Incisional Hernia Spigelian Hernia Lumbar HerniaAbdominal Wall Hernias.Abdominal Wall LayersSkinExternal obliqueInternal obliqueTransversus abdominisTransversalis fascia (major strength layer)PeritoneumHernia EtiologyVaries with age: Paediatric: Congenitalremnant Major risk is premature birth Adult: Tissueweakness Obesity Previous abdominal surgery Pregnancy Abrupt abdominal wall exertionVaries with genderClinical Evaluation: HistoryDemographics

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