Meridians in human body were classified as white meridian and black meridian according to Tibetan medicine.Season and environment,improper diet,toxic heat and trauma were recognized as main reasons damaging the white meridian in Tibetan Medicine,leading to the emerge of white meridian disease induced by Long (one of the three factors) and blood disorder.White meridian disease in Tibetan medicine involved a series diseases,such as many clinical diseases,due to the damage of white meridian system caused by pathogenic factors.Stroke also belonged to white meridian disease.Drugs and treatments were selected based on the nature of disease such as cold and heat,onset,thelocation of disease and the three factors (Chi Ba,Long and Pei Gen).It was the fundamental principle of the treatment rules of white meridian disease in Tibetan medicine,namely,prescribing medication with the rule of diagnosis and treatment,comprehensive analysis of the causes of diseases and mastering the change law of diseases and syndromes in clinic.

Objective To investigate the applicability of Bakes Caregiving Outcom Scale(BCOS) in the study of primary family caregivers'burden of stroke survivors. Methods The BCOS was used to inves-tigate the 180 primary family caregivers of stroke survivors.The applicability of BCOS was evaluated by in-ternal consistency,construct validity and criterion-related validity. Results The correlation coefficient be-tween the items and the total BCOS score was 0.408～0.725 (P ＜ 0.01 ).The total Cronbach's α was 0.877.Factor analysis used for examining the construct validity showed that 3 components were extracted and their accumulated contribution rate reached 60.93%.Factor loading of each item ranged from 0.510 to 0.875.The criterion-related validity was - 0.461 by using self-rated burden as a criterion(P ＜ 0.01 ). Conclusions BCOS is applicable in the evaluation of the primary family caregivers' burden of stroke survivors.