Regular pulmonary function test and histamine challenge test are effective indexes in guiding clinical therapy.
定期复查肺功能及支气管激发试验是指导临床治疗的有效指标。
Conclusion: MRI and MRCP are important in diagnosing the strictures of the hilar bile duct, and are valuable for guiding clinical therapy.
结论：MRI和MRCP对肝门部胆管狭窄病因的诊断具有重要价值，对指导临床采取正确的治疗措施具有重要意义。
Conclusion the clinical evaluation using these indexes for newborn infants with respiratory failure is beneficial in recognizing pathogenesis, guiding therapy and evaluating prognosis.
结论应用这些指标对呼吸衰竭的新生儿进行临床评估，对认识病因、判断病情、指导治疗和估计预后有重要意义。
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