Early screening allows for the identification of a collapsed lung, cystic changes within the lung, and possible start of right-sided heart failure. Upon autopsy, alveolar collapse and alveoli rupture can be seen. This can reduce the number of capillaries within the system and lead to cyanosis. Cyanosis occurs from chronic or intermittent respiratory distress and episodes of dyspnea (or apnea). Symptoms can develop within hours post-birth or be gradual; infants will experience transient respiratory distress, causing a lapse in diagnosis by around 30 to 40 days. Dangerous recurrent apnea (or dyspnea) can occur in the first two to six weeks postpartum. This cessation of breathing can progress to cyanosis and lung collapse. Infants display deteriorating respiratory symptoms along with early chronic lung changes which can be seen on chest radiography. These changes are diagnosed either directly upon birth or within the first month, as the premature infant requires mechanical ventilation for survival. Treatment
When caught early enough, continuous, mechanical oxygen therapy can be used to reverse the infants poor circulation and decreased blood oxygen, a symptom known as cyanosis. Improvement is gradual; however, cases show that after the first year of treatment using oxygen therapy and mechanical ventilators, infants show normal respiratory activity and are free from chest infiltrates with small cystic changes. Absence of fever (febrile), and normal white blood cell count correspond to successful reversion and allow for a positive prognosis.When not treated properly, methods of reversion using oxygen supplementation and ventilation have the possibility to put the infant at risk for rare complications.
Ileitis is an inflammation of the ileum, a portion of the small intestine. Crohns ileitis is a type of Crohns disease affecting the ileum. Ileitis is caused by the bacterium Lawsonia intracellularis. Inflammatory bowel disease does not associate with Lawsonia intracellularis infection. References


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