年近七旬的老刘不慎着凉住进了医院。本来患有慢阻肺(对慢性支气管炎和肺气肿的统称)、肺心病的他,这次明显感到心慌、胸闷、气短较平时加重。医生说他并发了呼吸衰竭,需要吸氧治疗,但嘱咐护士给氧时气流量一定要小一点儿,以每分钟2升左右为宜。老刘心里直纳闷,为 Nearly seventy years old Liu inadvertently chill into the hospital. Had chronic obstructive pulmonary disease (collectively referred to as chronic bronchitis and emphysema), pulmonary heart disease, he obviously felt palpitation, chest tightness, shortness of breath worse than usual. The doctor said he complicated respiratory failure, requiring oxygen therapy, but asked the nurse to oxygen flow must be a little smaller, to 2 liters per minute is appropriate. Old Liu heart straight wonder, for