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Normal postoperative febrile response in the pediatric orthopaedic population
R B Merjanian1, C R Kiriakos, F J Dorey
1UCLA Medical Center, Los Angeles, CA, USA.
Insights
Postoperative fever in pediatric orthopaedic patients is concerning. This study introduces a Total Febrile Response (TFR) metric, using intraoperative transfusion and blood loss to better predict normal fever ranges after surgery.
Area of Science:
- Pediatric Orthopaedics
- Clinical Research
- Medical Informatics
Background:
- Postoperative fever in pediatric orthopaedic patients is a persistent clinical concern.
- Previous research indicated fever is an unreliable predictor of surgical complications.
- Establishing expected fever parameters based on perioperative factors is crucial for patient assessment.
Purpose of the Study:
- To develop guidelines for expected postoperative fever in pediatric orthopaedic patients.
- To introduce a novel metric, Total Febrile Response (TFR), for a more sensitive fever assessment.
- To identify perioperative variables that predict TFR.
Main Methods:
- Retrospective study of 177 pediatric orthopaedic patients.
- Development of composite temperature curves to calculate Total Febrile Response (TFR).
- Multivariate analysis to correlate perioperative conditions with TFR.
Main Results:
- Intraoperative transfusion status and estimated blood loss were significant predictors of TFR.
- Guidelines were established for expected fever based on surgery magnitude, duration, transfusion, blood loss, age, and gender.
- TFR provides a cumulative assessment of fever, considering both magnitude and duration.
Conclusions:
- The study provides a new tool for assessing postoperative fever in pediatric orthopaedic patients.
- TFR, influenced by intraoperative transfusion and blood loss, helps determine if fever is within expected limits.
- This approach enhances the clinical assessment of postoperative recovery by contextualizing fever within individual patient variables.
Abstract:
Postoperative fever in the pediatric orthopaedic population remains a clinical concern even though prior studies concluded that fevers are a poor predictor of surgical complications. In this retrospective study of 177 patients, we established guidelines regarding the degree and time course of fever we should expect based on the perioperative conditions of magnitude of surgery, duration of surgery, need for intraoperative transfusion, estimated blood loss, age, and gender. To provide a more sensitive assessment of fever, we developed composite temperature curves for each patient and defined the area under these curves as the total febrile response (TFR). This allowed us to assess fever as a cumulative event, taking into account both its magnitude and duration. A multivariate model then determined that of the perioperative conditions studied, intraoperative transfusion status and estimated blood loss were most helpful in predicting a patient's TFR. The results of this study can be used as an additional tool for assessing postoperative progress and whether a fever is within the normal limits indicated by a patient's perioperative variables.
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