Search results
Results From The WOW.Com Content Network
Acute rejection is a category of rejection that occurs on the timescale of weeks to months, with most episodes occurring within the first 3 months to 1 year after transplantation. [ 6 ] [ 8 ] Unlike hyperacute rejection, acute rejection is thought to arise from two distinct immunological mechanisms as lymphocytes , a subset of white blood cells ...
A lung from a 16-year-old donor would first be offered to the person in the age group 12–17 with the highest lung allocation score and matching blood type in the vicinity of the transplant center. If there no suitable recipient in that age group, it would next be offered to the highest LAS-scoring candidate who is under 12 years of age.
Lung transplantation is the therapeutic measure of last resort for patients with end-stage lung disease who have exhausted all other available treatments without improvement. A variety of conditions may make such surgery necessary. As of 2005, the most common reasons for lung transplantation in the United States were: [2]
The Banff Foundation for Allograft Pathology also known as the Banff Foundation for Transplant Pathology is a nonprofit Swiss foundation which aims to "lead development and dissemination of the international Banff Classification of Allograft Pathology and to facilitate multidisciplinary, collaborative research to enhance its scientific basis and clinical utility to improve the care of ...
Rejection mediated by T lymphocytes sensitized by direct allorecognition pathway is predominant in the short period after the transplantation, but usually subsides with depletion of passenger cells while indirect recognition contributes to continuing graft damage and plays role in chronic rejection.
Bronchiolitis obliterans when it occurs following a lung transplant is known as bronchiolitis obliterans syndrome (BOS). [11] [4] BOS is defined as a person who has had either a HSCT or lung transplant and develops symptoms or radiographic findings consistent with bronchiolitis obliterans, but has not been confirmed by biopsy. [22] [44]
Hyperacute rejection occurs when, before the transplantation, the recipient has preformed anti-HLA antibodies, perhaps by previous blood transfusions (donor tissue that includes lymphocytes expressing HLA molecules), by anti-HLA generated during pregnancy (directed at the father's HLA displayed by the fetus), or by previous transplantation;
End stage pulmonary disease (ESPD) [2] is the result of chronic progressive lung diseases like COPD, [3] idiopathic pulmonary fibrosis, or systemic progressive diseases that affect the lungs such as cystic fibrosis or granulomatosis with polyangiitis. It is defined as when the lungs can no longer or barely remove enough carbon dioxide or supply ...