Discussions
rigidity, pain, muscle rigidity, chest wall rigidity
The current study characterized remifentanil-induced chest wall rigidity in older patients in usual clinical practice. In this study, the overall incidence of remifentanil-induced chest wall rigidity were 38% (46/120) in older patients (≥ 65 years), and SpOThe result of a heathy volunteer study showed that muscle rigidity developed in 50% of subjects who were administered high-dose fentanyl (15 μg/kg) [Furthermore, the order of administration of hypnotics and opioids predominantly depends on the anesthesiologists’ preference, based on their anesthetic experiences. Propofol, the most commonly used hypnotic, is known to cause injection pain [Although the precise pathophysiologic mechanism underlying opioid-induced chest wall rigidity has not yet been completely elucidated, centrally mediated noradrenergic and cholinergic actions are considered to be the most explainable underlying molecular mechanism [The study has certain limitations. First, quantitative and objective measurements for evaluating chest wall rigidity are limited. Esophageal pressure, as a useful surrogate of pleural and intrathoracic pressure, can be used to estimate lung and chest wall mechanics. However, the measurements are complicated by several technical factors, such as the appropriate placement of the esophageal balloon catheter [