Scoring of Deformed Costal Cartilages Reduces Postoperative Pain after Nuss Procedure for Pectus Excavatum. 2016

Tomohisa Nagasao, and Yusuke Hamamoto, and Motoki Tamai, and Tetsukuni Kogure, and Hua Jiang, and Naoki Takano, and Yoshio Tanaka
Department of Plastic Surgery, Kagawa University, Takamastu, Kagawa, Japan.

OBJECTIVE The present study aims to elucidate whether or not scoring deformed cartilages reduces postoperative pain after the Nuss procedure for pectus excavatum patients. METHODS A total of 46 pectus excavatum patients for whom the Nuss procedure was conducted were included in the study. The patients were categorized into two groups, depending on whether or not the supplementary maneuver of scoring deformed cartilages was performed in addition to the Nuss procedure. Patients for whom deformed costal cartilages were scored were categorized as the Scoring Group (n = 24); those who received no such scoring were categorized as the Non-Scoring Group (n = 22). After evaluating the maximum stresses occurring on the thoraces by means of dynamic simulation using finite element analyses, intergroup comparison of the maximum von-Mises stress values was performed. Furthermore, after quantifying postoperative pain as the frequency with which patients injected anesthetics through an epidural pain-control system within 2 postoperative days, the degree of pain was compared between the two groups. RESULTS The maximum stresses occurring on the thorax were significantly greater for the Non-Scoring Group than for the Scoring Group; injection frequency was also greater for the Non-Scoring Group (average 4.9 times for 2 days) than for the Scoring Group (average 2.5 times for 2 days). CONCLUSIONS High stresses occur due to the performance of the Nuss procedure, causing postoperative pain. The stresses can be reduced by performing supplementary scoring on deformed cartilages. Accordingly, postoperative pain is reduced.

UI MeSH Term Description Entries
D008297 Male Males
D010147 Pain Measurement Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies. Analgesia Tests,Analogue Pain Scale,Formalin Test,McGill Pain Questionnaire,Nociception Tests,Pain Assessment,Pain Intensity,Pain Severity,Tourniquet Pain Test,Visual Analogue Pain Scale,Analog Pain Scale,Assessment, Pain,McGill Pain Scale,Visual Analog Pain Scale,Analgesia Test,Analog Pain Scales,Analogue Pain Scales,Formalin Tests,Intensity, Pain,Measurement, Pain,Nociception Test,Pain Assessments,Pain Intensities,Pain Measurements,Pain Questionnaire, McGill,Pain Scale, Analog,Pain Scale, Analogue,Pain Scale, McGill,Pain Severities,Pain Test, Tourniquet,Questionnaire, McGill Pain,Scale, Analog Pain,Scale, Analogue Pain,Scale, McGill Pain,Severity, Pain,Test, Analgesia,Test, Formalin,Test, Nociception,Test, Tourniquet Pain,Tests, Nociception,Tourniquet Pain Tests
D010149 Pain, Postoperative Pain during the period after surgery. Acute Post-operative Pain,Acute Postoperative Pain,Chronic Post-operative Pain,Chronic Post-surgical Pain,Chronic Postoperative Pain,Chronic Postsurgical Pain,Pain, Post-operative,Persistent Postsurgical Pain,Post-operative Pain,Post-operative Pain, Acute,Post-operative Pain, Chronic,Post-surgical Pain,Postoperative Pain, Acute,Postoperative Pain, Chronic,Postsurgical Pain,Postoperative Pain,Acute Post operative Pain,Chronic Post operative Pain,Chronic Post surgical Pain,Chronic Postsurgical Pains,Pain, Acute Post-operative,Pain, Acute Postoperative,Pain, Chronic Post-operative,Pain, Chronic Post-surgical,Pain, Chronic Postoperative,Pain, Chronic Postsurgical,Pain, Persistent Postsurgical,Pain, Post operative,Pain, Post-surgical,Pain, Postsurgical,Post operative Pain,Post operative Pain, Acute,Post operative Pain, Chronic,Post surgical Pain,Post-operative Pains,Post-surgical Pain, Chronic,Postsurgical Pain, Chronic,Postsurgical Pain, Persistent
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D003198 Computer Simulation Computer-based representation of physical systems and phenomena such as chemical processes. Computational Modeling,Computational Modelling,Computer Models,In silico Modeling,In silico Models,In silico Simulation,Models, Computer,Computerized Models,Computer Model,Computer Simulations,Computerized Model,In silico Model,Model, Computer,Model, Computerized,Model, In silico,Modeling, Computational,Modeling, In silico,Modelling, Computational,Simulation, Computer,Simulation, In silico,Simulations, Computer
D005260 Female Females
D005660 Funnel Chest A developmental anomaly in which the lower sternum is posteriorly dislocated and concavely deformed, resulting in a funnel-shaped thorax. Pectus Excavatum,Chest, Funnel,Chests, Funnel,Excavatum, Pectus,Funnel Chests
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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