Postoperative fever

Distinct patterns of postoperative fever in paediatric neurosurgery patients

PURPOSE

Postoperative fever is a common problem following neurosurgery but data on the causes among paediatric patients is sparse. In this report, we determined the incidence, causes, and outcomes of postoperative fever in paediatric neurosurgical patients (< 18 years), and contrasted the findings with an adult cohort published recently from our unit.

METHODS

We recruited 61 patients who underwent 73 surgeries for non-traumatic neurosurgical indications over 12 months. A standard protocol was followed for the evaluation and management of postoperative fever. We prospectively collected data pertaining to operative details, daily maximal temperature, clinical features, and use of surgical drains, urinary catheters, and other adjuncts. Elevated body temperature of > 99.9 °F or 37.7 °C for > 48 h or associated with clinical deterioration or localising features was considered as "fever"; elevated temperature not meeting these criteria was classified as transient elevation in temperature (TET).

RESULTS

Twenty-six patients (35.6%) had postoperative fever, more frequent than in adult patients. TET occurred in 12 patients (16.4%). The most common causes of fever were aseptic meningitis (34.6%), followed by urinary tract infections (15.4%), pyogenic meningitis, COVID-19, and wound infections. Postoperative fever was associated with significantly longer duration of hospital admission and was the commonest cause of readmission.

CONCLUSION

In contrast to adults, early temperature elevations in paediatric patients may portend infectious and serious non-infectious causes of fever, including delayed presentation with aseptic meningitis, a novel association among paediatric patients. Investigation guided by clinical assessment and conservative antibiotic policy in keeping with the institutional microbiological profile provides the most appropriate strategy in managing paediatric postoperative fever.

Management of Postoperative Fever in Adult Cardiac Surgical Patients

Postoperative fever after cardiac surgery is a common occurrence. Most fevers are benign and self-limiting resulting from inflammation caused by surgical trauma and blood contact with cardiopulmonary bypass circuit resulting in the release of cytokines. Only a small percentage of time is postoperative fever due to an infection complicating surgery. The presence of fever frequently triggers a battery of diagnostic tests that are costly, could expose the patient to unnecessary risks, and can produce misleading or inconclusive results. It is therefore important that fever be evaluated in a systematic, prudent, clinically appropriate, and cost-effective manner. This article focuses on the current evidence regarding pathophysiology, incidence, causes, evaluation, and management of fever in postoperative adult cardiac surgical patients.

Wind, water, wound, walk--do the data deliver the dictum?

OBJECTIVE

To evaluate the teaching dictum "wind, water, wound, walk" in the modern surgical environment.

DESIGN

A retrospective cohort study.

SETTING

Hospitals enrolled in the American College of Surgeons National Surgical Quality Improvement Program.

PARTICIPANTS

We identified 11,137 patients enrolled in American College of Surgeons National Surgical Quality Improvement Program Participant Use File (2011) who were older than 18 years; underwent a general surgical procedure; and developed a postoperative pneumonia (PNA, "wind"), urinary tract infection (UTI, "water"), surgical site infection (SSI, "wound"), or venous thromboembolic event (VTE, "walk") for inclusion in the study. Patients were excluded if they had an infection present at the time of surgery or were missing information on the time of diagnosis.

RESULTS

The median day of diagnosis differed significantly according to occurrence type (median day of PNA = 5, UTI = 8, SSI = 11, and VTE = 9, p < 0.001). The sequence of occurrences diagnosed before discharge (median day of PNA = 4, UTI = 5, SSI = 7, and VTE = 5) differed from that of occurrences diagnosed following discharge (median day of PNA = 10, UTI = 14, SSI = 14, and VTE = 14). Within the predischarge and postdischarge subsets, the median day of diagnosis remained significantly different according to occurrence type (all p's < 0.001).

CONCLUSIONS

The dictum should be taught as, "wind, water, walk, wound" to reflect the timing and progression of the diagnosis of PNA, UTI, VTE, and SSI. The dictum did not reflect the timing or sequence of the occurrences in the cohort diagnosed after discharge. Educators must teach trainees to apply the dictum in the appropriate patient setting. As surgical care changes, we must continue to reassess our educational pearls to ensure that they reflect the modern reality.

Postoperative fever: a normal inflammatory response or cause for concern

PURPOSE

To devise a systematic diagnostic strategy displayed in algorithm format to assist advanced practice registered nurses (APRNs) in determining when postoperative fever is simply a normal inflammatory response and when further investigation is needed to rule out infection or other serious noninfectious causes of fever.

DATA SOURCES

Selected research and clinical articles.

CONCLUSIONS

Postoperative fever is often a normal inflammatory response to surgery, but it can also be a manifestation of a serious underlying infectious or noninfectious etiology. Therefore, it is important to approach each instance of postoperative fever in a systematic manner.

IMPLICATIONS FOR PRACTICE

The role of the APRN in managing surgical patients requires being able to accurately assess and evaluate the cause of postoperative fever and take action accordingly. That means taking into account a variety of factors (e.g., patient's medical history, physical examination findings, and type of surgery), so that appropriate diagnostic tests can be ordered to evaluate the cause of the postoperative fever. By being aware of the causes of postoperative fever, the APRN can also take prophylactic action to decrease the risk associated with many of these potential febrile causes.