Brodsky Martin B, De Ishani, Chilukuri Kalyan, Huang Minxuan, Palmer Jeffrey B, Needham Dale M
Department of Physical Medicine and Rehabilitation, Johns Hopkins University, 600 N. Wolfe St. - Phipps 181, Baltimore, MD, 21287, USA.
Outcomes After Critical Illness and Surgery (OACIS) Research Group, Johns Hopkins University, Baltimore, MD, USA.
Dysphagia. 2018 Dec;33(6):768-777. doi: 10.1007/s00455-018-9901-z. Epub 2018 Apr 30.
To evaluate timing and duration differences in airway protection and esophageal opening after oral intubation and mechanical ventilation for acute respiratory distress syndrome (ARDS) survivors versus age-matched healthy volunteers. Orally intubated adult (≥ 18 years old) patients receiving mechanical ventilation for ARDS were evaluated for swallowing impairments via a videofluoroscopic swallow study (VFSS) during usual care. Exclusion criteria were tracheostomy, neurological impairment, and head and neck cancer. Previously recruited healthy volunteers (n = 56) served as age-matched controls. All subjects were evaluated using 5-ml thin liquid barium boluses. VFSS recordings were reviewed frame-by-frame for the onsets of 9 pharyngeal and laryngeal events during swallowing. Eleven patients met inclusion criteria, with a median (interquartile range [IQR]) intubation duration of 14 (9, 16) days, and VFSSs completed a median of 5 (4, 13) days post-extubation. After arrival of the bolus in the pharynx, ARDS patients achieved maximum laryngeal closure a median (IQR) of 184 (158, 351) ms later than age-matched, healthy volunteers (p < 0.001) and it took longer to achieve laryngeal closure with a median (IQR) difference of 151 (103, 217) ms (p < 0.001), although there was no significant difference in duration of laryngeal closure. Pharyngoesophageal segment opening was a median (IQR) of - 116 (- 183, 1) ms (p = 0.004) shorter than in age-matched, healthy controls. Evaluation of swallowing physiology after oral endotracheal intubation in ARDS patients demonstrates slowed pharyngeal and laryngeal swallowing timing, suggesting swallow-related muscle weakness. These findings may highlight specific areas for further evaluation and potential therapeutic intervention to reduce post-extubation aspiration.
评估急性呼吸窘迫综合征(ARDS)幸存者与年龄匹配的健康志愿者在经口插管和机械通气后气道保护及食管开放的时间和持续时间差异。对接受ARDS机械通气的成年(≥18岁)经口插管患者在常规护理期间通过视频荧光吞咽造影研究(VFSS)评估吞咽障碍。排除标准为气管切开术、神经功能障碍以及头颈癌。先前招募的健康志愿者(n = 56)作为年龄匹配的对照。所有受试者均使用5毫升稀钡剂团块进行评估。VFSS记录逐帧回顾吞咽期间9个咽和喉事件的起始。11名患者符合纳入标准,插管持续时间中位数(四分位间距[IQR])为14(9,16)天,VFSS在拔管后中位数为5(4,13)天完成。在钡剂团块到达咽部后,ARDS患者达到最大喉部闭合的时间比年龄匹配的健康志愿者中位数(IQR)晚184(158,351)毫秒(p < 0.001),且达到喉部闭合所需时间更长,中位数(IQR)差异为151(103,217)毫秒(p < 0.001),尽管喉部闭合持续时间无显著差异。咽食管段开放比年龄匹配的健康对照中位数(IQR)短−116(−183,1)毫秒(p = 0.004)。对ARDS患者经口气管插管后吞咽生理的评估表明,咽和喉吞咽时间减慢,提示吞咽相关肌肉无力。这些发现可能突出了进一步评估和潜在治疗干预的特定领域,以减少拔管后误吸。