（健康新闻） - 肺候征收可以在机械通风患者的床边评估2019（Covid-19） - 诱导急性呼吸窘迫综合征（ARDS），并且交替的身体定位可以提高征收，根据在线在线发表的23在呢美国呼吸系统杂志CHINESS。
Chun Pan, M.D., from Southeast University in Nanjing, China, and colleagues describe their use of the recruitment-to-inflation ratio (R/I ratio) in a series of mechanically ventilated patients with SARS-CoV-2-associated ARDS and the effect produced by body positioning. The R/I ratio estimates how much of an increase in end-expiratory lung volume induced by positive end-expiratory pressure (PEEP) is distributed between the recruited lung and the inflation and/or hyperinflation of the baby lung when a higher PEEP is applied. A total of 12 patients were enrolled; seven patients received at least one session of prone positioning during the six-day observation period. The researchers found that on the first day of observation, 10 of the 12 patients were poorly recruitable (R/I ratio, 0.21 ± 0.14). Persistent poor recruitability was seen for patients who did not receive prone positioning (one of 17 daily measurements showed high recruitability). Alternating body position between supine and prone positioning was associated with increased lung recruitability (13 of 36 daily measurements showed high recruitability). The ratio of arterial oxygen partial pressure to fractional inspired oxygen went from 120 ± 61 mm Hg to 182 ± 140 mm Hg at supine and prone, respectively, in patients who were placed in the prone position.