http://www.pediatrics.org/cgi/content/abstract/111/1/129
|
|
||||||||
|
|
||||||||
|
|
PEDIATRICS Vol. 111 No. 1 January 2003, pp. 129-135
![]()
![]()
* Department of Pediatric Surgery, Erasmus MC-Sophia, Rotterdam,
the Netherlands
Department of
Developmental Psychology, Free University Amsterdam, Amsterdam, the Netherlands
Department of Child Health
Division, TNO Prevention and Health, Leiden, the Netherlands
|| Department of Medical Psychology and Psychotherapy, NIHES,
Erasmus-MC, Rotterdam, the Netherlands
¶ Department of Internal Medicine, Section of Endocrinology,
Erasmus-MC, Rotterdam, the Netherlands
Objectives. Pain exposure during early infancy affects the pain perception beyond infancy into childhood. The objective of this study was to examine whether major surgery within the first 3 months of life in combination with preemptive analgesia alters pain responses to immunization at 14 or 45 months and to assess whether these alterations are greater in toddlers with a larger number of negative hospital experiences.
Methods. Two groups of 50 toddlers each were compared: index group and control group. All index toddlers had participated within the first 3 months of their life in a randomized, clinical trial that evaluated the efficacy of preemptive morphine administration for postoperative analgesia. The controls were matched by type of immunization and community health care pediatrician. Pain reactions were recorded at routine immunization at either 14 (measles-mumps-rubella immunization) or 45 months (diphtheria-tetanus-trivalent polio immunization) of age. Outcome measures were facial reaction, coded by the Maximum Discriminative Facial Movement Coding System; heart rate (HR); and cortisol saliva concentration. Negative hospital experiences included number of operations requiring postoperative morphine administration, cumulative Therapeutic Intervention Scoring System scores, and length of stay in the intensive care unit or total hospitalization days.
Results. No differences were found between the index and control groups in the facial display of pain, anger, or sadness or in physiologic parameters such as HR and cortisol concentrations. Intragroup analyses of the index group showed that after measles-mumps-rubella vaccination, the number of negative hospital experiences correlated positively with the facial responsiveness and negatively with HR responses. No effect was seen after diphtheria-tetanus-trivalent polio immunization.
Conclusions. Major surgery in combination with preemptive analgesia within the first months of life does not alter pain response to subsequent pain exposure in childhood. Greater exposure to early hospitalization influences the pain responses after prolonged time. These responses, however, diminish after a prolonged period of nonexposure.
Key Words: prospective study • newborn infant • repetitive pain • biobehavioral pain response • analgesia
Abbreviations: NICU, neonatal intensive care unit • ELBW, extreme low birth weight • HR, heart rate • MMR, measles-mumps-rubella • DTT, diphtheria-tetanus-trivalent polio • MAX, Maximum Discriminative Facial Movement Coding System • AC, appearance change • FEN, forehead/eyebrows/nasal • ENC, eye/nose/cheek • MLC, mouth/lips/chin • TISS, Therapeutic Intervention Scoring System • CNS, central nervous system
Received for publication May 30, 2002; accepted Aug 20, 2002.
ALL INFORMATION, DATA, AND
MATERIAL CONTAINED, PRESENTED, OR PROVIDED HERE IS FOR GENERAL INFORMATION
PURPOSES ONLY AND IS NOT TO BE CONSTRUED AS REFLECTING THE KNOWLEDGE OR OPINIONS
OF THE PUBLISHER, AND IS NOT TO BE CONSTRUED OR INTENDED AS PROVIDING MEDICAL OR
LEGAL ADVICE. THE DECISION WHETHER OR NOT TO VACCINATE IS AN IMPORTANT AND
COMPLEX ISSUE AND SHOULD BE MADE BY YOU, AND YOU ALONE, IN CONSULTATION WITH
YOUR HEALTH CARE PROVIDER.