Distribution of acute appendicitis care in children: A statewide assessment of the surgeons and facilities providing surgical care

Associations between Hospital Setting and Outcomes after Pediatric Appendectomy

Prior studies of associations between hospital location and outcomes for pediatric appendectomy have not adjusted for significant differences in patient and treatment patterns between settings. This was a cross-sectional analysis of pediatric appendectomies in the 2016 Kids' Inpatient Database (KID). Weighted multiple linear and logistic regression models compared hospital location (urban or rural) and academic status against total admission cost (TAC), length of stay (LOS), and postoperative complications. Patients were stratified by laparoscopic (LA) or open (OA) appendectomy. Among 54,836 patients, 39,454 (73%) were performed at an urban academic center, 11,642 (21%) were performed at an urban non-academic center, and 3740 (7%) were performed at a rural center. LA was utilized for 49,011 (89%) of all 54,386 patients: 36,049 (91%) of 39,454 patients at urban academic hospitals, 10,191 (87%) of 11,642 patients at urban non-academic centers, and 2771 (74%) of 3740 patients at rural centers (p < 0.001). On adjusted analysis, urban academic centers were associated with an 18% decreased TAC (95% CI -0.193--0.165; p < 0.001) despite an 11% increased LOS (95% CI 0.087-0.134; p < 0.001) compared to rural centers. Urban academic centers were associated with a decreased odds of complication among patients who underwent LA (OR 0.787, 95% CI 0.650-0.952) but not after OA. After adjusting for relevant patient and disease-related factors, urban academic centers were associated with lower costs despite longer lengths of stay compared to rural centers. Urban academic centers utilized LA more frequently and were associated with decreased odds of postoperative complications after LA.

Association of Rural Residence With Surgical Outcomes Among Infants at US Children's Hospitals

OBJECTIVES

Disparities in pediatric health outcomes are widespread. It is unclear whether rurality negatively impacts outcomes of infants with surgical congenital diseases. This study compared outcomes of rural versus urban infants requiring complex surgical care at children's hospitals in the United States.

METHODS

Rural and urban infants (aged <1 year) receiving surgical care at children's hospitals from 2016 to 2019 for esophageal atresia, gastroschisis, Hirschsprung's disease, anorectal malformation, and congenital diaphragmatic hernia were compared over a 1-year postoperative period using the Pediatric Health Information System. Generalized linear mixed effects models compared outcomes of rural and urban infants.

RESULTS

Among 5732 infants, 20.2% lived in rural areas. Rural infants were more frequently white, lived farther from the hospital, and lived in areas with lower median household income compared with urban infants (all P < .001). Rural infants with anorectal malformation and gastroschisis had lower adjusted hospital days over 1 year; rural infants with esophageal atresia had higher adjusted odds of 30-day hospital readmission. Adjusted mortality, hospital days, and readmissions were otherwise similar between the 2 groups. Outcomes remained similar when comparing urban infants to rural infant subgroups with the longest hospital travel distance (≥60 miles) and lowest median household income (<$35 000).

CONCLUSIONS

Despite longer travel distances and lower financial resources, rural infants with congenital anomalies have similar postoperative outcomes to urban infants when treated at children's hospitals. Future work is needed to examine outcomes for infants treated outside children's hospitals and to determine whether efforts are necessary to increase access to children's hospitals.

Pre-appendectomy hyponatremia is associated with increased rates of complicated appendicitis

Background

Acute appendicitis is one of the most common surgical emergencies worldwide. Preoperative assessment of the risk of complicated appendicitis may aid in treatment planning. We sought to investigate the association between pre-appendectomy hyponatremia and diagnosis of complicated appendicitis.

Methods

The TriNetX platform, a federated health research network that aggregates de-identified electronic health record data of over 90 million patients across the United States, was queried for patients who underwent appendectomy starting January 2019 and who had at least one sodium value from the preoperative period. The study population was stratified into three age groups: pediatric (age < 18), adult (age 18-64), and older adult (age ≥ 65). These groups were subdivided into patients with preoperative hyponatremia (<135 mmol/L) and normonatremia (135-145 mmol/L).

Results

Among the 61,245 patients who met inclusion criteria, 17,546 were included for analysis following propensity score matching. The odds of complicated appendicitis were highest in pediatric patients (age < 18) with pre-appendectomy hyponatremia (odds ratio [OR] = 2.91, 95 % CI [2.53, 3.35]). Patients age 18-64 and aged ≥ 65 with preoperative hyponatremia also demonstrated increased odds of a complicated appendicitis diagnosis, but to a lesser extent (OR = 2.11, 95 % CI [1.92, 2.32] (OR = 1.49, 95 % CI [1.25, 1.77], respectively).

Conclusions

In a large analysis of matched patients with acute appendicitis, we found an association between immediate preoperative hyponatremia and complicated appendicitis. Future studies are indicated to further evaluate the role of hyponatremia as a potential diagnostic marker for complicated appendicitis in all age groups.

Key message

This study suggests a role of hyponatremia as one of multiple variables to incorporate into future clinical decision tools for complicated acute appendicitis.