血中 O_2分压降低和 CO_2分压改变与肺动脉高压的关系,这在临床某些呼吸系统疾病和高原适应不全症中均占有十分重要的地位,对此关系的探讨具有一定的理论价值和实际意义。长期以来在这方面进行过不少研究,然而,迄今为止仍有许问题尚待解决。其中包括 PaCO_2(动脉血 CO_2分压)改变究竟对肺环循有无影响?着存在影响,其作用途 The decrease of partial pressure of blood O_2 and the change of partial pressure of CO_2 and pulmonary hypertension, which play a very important role in some respiratory diseases and altitude sickness in clinical practice, have a certain theoretical value and practical significance significance. Many studies have been conducted in this area for a long time. However, so far, many problems remain to be solved. Including PaCO_2 (arterial partial pressure of CO_2) changes in the lung circulation after all have no effect? ​​There is an impact, its role