A population-based retrospective cohort study of surgical trends and outcomes of pediatric urolithiasis in Ontario, Canada (2002-2019)

INTRODUCTION

The worldwide incidence of pediatric urinary stone disease (PUSD) is increasing. However, there is no commensurate data on whether this translates to an increasing need for surgical intervention for PUSD, given the role of conservative management.

OBJECTIVE

We aimed to evaluate the trends and outcomes of clinically significant PUSD, using administrative databases to identify patients surgically treated for PUSD.

STUDY DESIGN

This retrospective population-based cohort study assessed the incidence and trends of surgically treated PUSD and outcomes in Ontario, Canada in patients <18 years of age who underwent their first PUSD procedure between 2002 and 2019 utilizing administrative databases held at the Institute of Clinical Evaluative Sciences (ICES). We assessed the incidence of surgically treated PUSD, demographics, initial surgical treatment and imaging modality, and risk factors for repeat intervention within 5 years. Statistical analyses summarized demographics, surgical trends, and logistic regression was used to identify risk factors for repeat surgical intervention.

RESULTS

We identified 1149 patients (mean age 11.3 years), with 59.6% older than 12 years. There was a decrease in the number of PUSD procedures performed per year that was close to statistical significance (p = 0.059) and a trend towards increased utilization of ureteroscopy (URS) compared with Shockwave Lithotripsy (SWL). In addition, there was a significant increase in the proportion of females surgically treated with PUSD (p = 0.001). In the 706 patients followed for 5 years, 17.7% underwent a repeat procedure within 6 months, while 20.4% underwent a repeat procedure from 6-months to 5 years. Renal stone location (OR 2.79, 95% confidence interval (CI) 1.62-4.80, p = 0.0002) and index SWL (OR 1.66, 95% CI 1.20-2.31, p = 0.0025) were risk factors for repeat surgical intervention within the first 6-months. There was an increasing utilization of ultrasound (US) compared to computerized tomography (CT) (p = 0.0008).

DISCUSSION

Despite the literature reporting increasing PUSD incidence, we observed a non-significant decrease in the number of surgical PUSD procedures performed. Exclusion of those treated conservatively may explain our results. The increase in the proportion of females treated reflects the narrowing gender gap in stone disease. A trend towards increased URS utilization was observed and re-intervention rates were similar to previous studies.

CONCLUSION

The overall rate of surgically treated PUSD did not show an increasing trend in Ontario, Canada from 2002 to 2019. URS was the most common surgical treatment modality, with a corresponding decline in SWL rates. PUSD was associated with a high surgical re-intervention rate within 6 months.

Translation and validation of the STARx questionnaire in transitioning Chinese adolescents and young adults with chronic health conditions

BACKGROUND

Adolescent/young adults (AYAs) with chronic conditions must undergo healthcare transition (HCT) preparation until their mid-twenties. Valid HCT readiness measures are lacking in China.

METHODS

The present study translated, back-translated, and adapted the Self-Management and Transition to Adulthood with Rx = Treatment (STAR_x) Questionnaire. We examined the psychometric properties of this tool in a relatively large in-patient sample of AYAs with various chronic health conditions at a Chinese tertiary general hospital.

RESULTS

We enrolled 624 AYAs aged 10-25 years (19.66 ± 3.64) with various chronic health conditions. The Chinese version of the STAR_x Questionnaire demonstrated excellent internal consistency (Cronbach's alpha = 0.83) and reliability with a two-week test-retest (ICC = 0.88, p < .001). Furthermore, the Chinese version revealed a three-factor structure (self-management, disease knowledge, and provider communication) consistent with the revised English version of the STAR_x Questionnaire. In terms of discriminant validity, the total score of the Chinese STAR_x Questionnaire showed a significant positive correlation with age but no gender differences were found. In terms of predictive validity, the Chinese STAR_x Questionnaire was significantly correlated with shorter length of hospitalization and higher frequency of emergency room visit, but the correlations became insignificant after controlling for age.

CONCLUSIONS

The results suggest that the Chinese version of the STAR_x Questionnaire is a robust HCT readiness tool in AYAs with chronic conditions and clinicians may find it useful to develop individualized interventions.

Protocol and Baseline Data on Renal Autologous Cell Therapy Injection in Adults with Chronic Kidney Disease Secondary to Congenital Anomalies of the Kidney and Urinary Tract

BACKGROUND

Advanced cell therapies with autologous, homologous cells show promise to affect reparative and restorative changes in the chronic kidney disease (CKD) nephron. We present our protocol and preliminary analysis of an IRB-approved, phase I single-group, open-label trial that tests the safety and efficacy of Renal Autologous Cell Therapy (REACT; NCT04115345) in adults with congenital anomalies of the kidney and urinary tract (CAKUT).

METHODS

Adults with surgically corrected CAKUT and CKD stages 3 and 4 signed an informed consent and served as their "own" baseline control. REACT is an active biological ingredient acquired from a percutaneous tissue acquisition from the patient's kidney cortex. The specimen undergoes a GMP-compliant manufacturing process that harvests the selected renal cells composed of progenitors for renal repair, followed by image-guided locoregional reinjection into the patient's renal cortex. Participants receive 2 doses at 6-month intervals. Primary outcomes are stable renal function and stable/improved quality of life. Additional exploratory endpoints include the impact of REACT on blood pressure, vitamin D levels, hemoglobin, hematocrit and kidney volume by MRI analysis.

RESULTS

Four men and 1 woman were enrolled and underwent 5 cell injections. Their characteristics were as follows: mean 52.8 years (SD 17.7 years), 1 Hispanic, 4 non-Hispanic, and 5 white. There were no renal tissue acquisition, cell injection, or cell product-related complications at baseline.

CONCLUSION

REACT is demonstrating feasibility and patient safety in preliminary analysis. Autologous cell therapy treatment has the potential to stabilize or improve renal function in CAKUT-associated CKD to delay or avert dialysis. Patient enrollment and follow-up are underway.

Association of youth health care transition readiness to role overload among parents of children with chronic illness

BACKGROUND

A parent's level of role overload, a situation in which the demands of an individual's roles are beyond their capacity to perform adequately, has been associated with poor outcomes in adolescents. It is unknown if role overload in parents is associated with less health care transition (HCT) readiness in their children with chronic conditions. We sought to assess this relationship.

METHODS

Youth with chronic conditions attending a therapeutic camp and their parents completed online consents/assents and de-identified surveys. Parents reported on parental role overload using the Reilly Role Overload Scale and a proxy assessment of the youth's HCT readiness using the STAR_x -Parent Questionnaire. Youth self-reported on their HCT readiness using the STAR_x Questionnaire. Linear regression measured the relationship between parent role overload and HCT readiness, controlling for youth's age, sex, and degree of youth's educational support.

RESULTS

One hundred fifty-two parents and 50 youth completed the measures. Greater parental role overload was associated with less overall HCT readiness on the parent proxy measure (β = -.12, P ≤ .008) and a lower level in the self-management domain on the parent proxy measure (β = -.20, P ≤ .001). We found no associations between parent role overload and youth self-report of HCT readiness.

CONCLUSION

Parent's level of role overload had no association with youth's self-report of HCT readiness but was negatively associated with parent proxy report of their youth's HCT readiness, suggesting that parents with high levels of role overload may perceive their youth as less ready to transition to adult-focused care.

Disparities in Health Literacy and Healthcare Utilization among Adolescents and Young Adults with Chronic or End-stage Kidney Disease

PURPOSE

Low health literacy adversely affects health outcomes in adults with chronic kidney disease. The current study examined associations between limited/inadequate health literacy and health services utilization among adolescents and young adults (AYA) with chronic or end-stage kidney disease (CKD or ESKD).

DESIGN AND METHODS

This was a retrospective cohort study that enrolled patients from both the pediatric- and adult-focused nephrology clinics of a major university hospital. Demographic information, patients' health literacy and numeracy skills (Newest Vital Sign), and health services utilization (emergency department visits, preventable hospitalizations, total hospitalizations, and length of stay in the hospital) were evaluated. A negative binomial regression model for counts tested the association between AYA patients' literacy/numeracy skills and health services utilization.

RESULTS

The study enrolled 142 participants, 66 (46.5%) patients from adult nephrology and 76 (53.5%) from pediatric nephrology clinics, with a mean age of 20.8±5.60years (range 12-31). Half of the sample (n=72, 51%) had limited health literacy skills. Health literacy/numeracy level was not significantly associated with total hospitalizations, preventable hospitalizations, emergency department (ED) visits, or length of hospital stay. However, public insurance/self-pay, minority race, and kidney transplant/dialysis diagnoses were associated with more preventable hospitalizations.

CONCLUSIONS

Among AYA with CKD/ESKD, there were no differences between the low and adequate health literacy groups on health care utilization outcomes when modeling clinical outcomes (total hospitalizations, preventable hospitalizations, ED visits, and length of hospital stay) after adjusting for demographics and disease type. This suggests that other factors warrant consideration in healthcare utilization rates.