求翻译：4．严密观察病情，注意体温、脉搏、呼吸、血压、神志的变化，注意咳嗽、胸痛的性质，咳痰、咯血的性质和量，气急、喘鸣等，并需熟悉酸碱失衡的临床表现。发现异常病情，及时通知医师。是什么意思？

4. Observing closely, pay attention to body temperature, pulse, respiration, blood pressure, changes in consciousness, cough, chest pain, the nature of sputum, the nature and amount of hemoptysis, shortness of breath, wheezing, etc., and be familiar with the clinical manifestations of acid-base imba

正在翻译，请等待...

4. strict observation conditions, the attention body temperature, the pulse, the breath, the blood pressure, the state of mind change, the attention cough, chest pain nature, the expectorate, the hemoptysis nature and the quantity, the short of breath, pants noisily and so on, and needs the familiar