“…We provided a detailed explanation regarding the clinical study to five patients who presented to the Emergency department of the Nara Prefecture General Medical Center (Nara, Japan) between October 2022 and December 2022 with multiple rib fractures; among them, three patients provided consent to participate and were included in the study. The inclusion criteria were as follows: (1) patients aged 20-80 years, (2) chest pain due to multiple ribs fracture, (3) no alterations in the level of consciousness, and (4) ability to provide informed consent. The exclusion criteria were as follows: (1) severe infection, (2) pregnancy, (3) ventilator control, (4) severe cognitive impairment (Mini-Mental State Evaluation ≤10), ( 5) inability to answer the questionnaires, or (6) judged to be inappropriate for participation by the principal investigator or co-investigator.…”