Child Health and the Pediatric Hematology-Oncology Workforce: 2020-2040

Pediatric hematology-oncology (PHO) is 1 of the oldest recognized pediatric subspecialities. PHO physicians care for infants, children, adolescents, and young adults with all types of cancer and nonmalignant blood conditions, in many cases temporarily assuming the role of a primary care physician because of the complexity and intensity of treatment. However, the number of clinically active PHO subspecialists needed to care for children in the United States remains unknown. Recent papers suggest a potential oversaturation of PHO physicians in some geographic areas. This article is part of a Pediatrics supplement focused on projecting the future supply of the pediatric subspecialty workforce. It draws on information available in the literature, data from the American Board of Pediatrics, and findings from a new microsimulation model estimating the future supply of pediatric subspecialists through 2040. The model predicts a workforce growth in PHO subspecialists of 66% by 2040. Alternative scenarios, including changes in clinical time and fellowship size, resulted in a difference in growth of ±18% from baseline. The model also forecasts significant geographic maldistribution. For example, the current workforce is concentrated in the Northeast Census region and the model predicts the New England Census division will have a 2.9-fold higher clinical workforce equivalent per 100 000 children aged 0 to 18 years than the Mountain Census division by 2040. These findings suggest potential opportunities to improve the PHO subspecialty workforce and the outcomes and experiences of its patient population through educational changes, practice initiatives, policy interventions, and dedicated research.

Compliance With Central Line Maintenance Bundle and Infection Rates

BACKGROUND

Reliable bundle performance is the mainstay of central line-associated bloodstream infections (CLABSI) prevention despite an unclear relationship between bundle reliability and outcomes. Our primary objective was to evaluate the correlation between reported bundle compliance and CLABSI rate in the Solutions for Patient Safety network. The secondary objective was to identify which hospital and process factors impact this correlation.

METHODS

We examined data on bundle compliance and monthly CLABSI rates from January 11 to December 21 in 159 hospitals. The correlation (adjusting for temporal trend) between CLABSI rates and bundle compliance was done at the network level. Negative binomial regression was done to detect the impact of hospital type, central line audit rate, and adoption of a comprehensive safety culture program on the association between bundle compliance and CLABSI rates.

RESULTS

During the study, hospitals reported 27 196 CLABSI on 20 274 565 line days (1.34 CLABSI/1000 line days). Out of 2 460 133 observed bundle opportunities, 2 085 700 (84%) were compliant. There was a negative correlation between the monthly bundle reliability and monthly CLABSI rate (-0.35, P <.001). After adjusting for the temporal trend, the partial correlation was -0.25 (P = .004). On negative binomial regression, significant positive interaction was only noted for the hospital type, with Hospital Within Hospital (but not freestanding children's hospitals) revealing a significant association between compliance ≥95% and lower CLABSI rates.

CONCLUSIONS

Adherence to best practice guidelines is associated with a reduction in CLABSI rate. Hospital-level factors (hospitals within hospitals vs freestanding), but not process-related (central line audit rate and safety culture training), impact this association.

Evaluation for Bleeding Disorders in Suspected Child Abuse

Bruising or bleeding in a child can raise the concern for child abuse. Assessing whether the findings are the result of trauma and/or whether the child has a bleeding disorder is critical. Many bleeding disorders are rare, and not every child with bruising/bleeding that may raise a concern for abuse requires an evaluation for bleeding disorders. However, in some instances, bleeding disorders can present in a manner similar to child abuse. Bleeding disorders cannot be ruled out solely on the basis of patient and family history, no matter how extensive. The history and clinical evaluation can be used to determine the necessity of an evaluation for a possible bleeding disorder, and prevalence and known clinical presentations of individual bleeding disorders can be used to guide the extent of laboratory testing. This clinical report provides guidance to pediatricians and other clinicians regarding the evaluation for bleeding disorders when child abuse is suspected.

Outcomes after bloodstream infection in hospitalized pediatric hematology/oncology and stem cell transplant patients

BACKGROUND

Pediatric hematology/oncology (PHO) patients receiving therapy or undergoing hematopoietic stem cell transplantation (HSCT) often require a central line and are at risk for bloodstream infections (BSI). There are limited data describing outcomes of BSI in PHO and HSCT patients.

METHODS

This is a multicenter (n = 17) retrospective analysis of outcomes of patients who developed a BSI. Centers involved participated in a quality improvement collaborative referred to as the Childhood Cancer and Blood Disorder Network within the Children's Hospital Association. The main outcome measures were all-cause mortality at 3, 10, and 30 days after positive culture date; transfer to the intensive care unit (ICU) within 48 hours of positive culture; and central line removal within seven days of the positive blood culture.

RESULTS

Nine hundred fifty-seven BSI were included in the analysis. Three hundred fifty-four BSI (37%) were associated with at least one adverse outcome. All-cause mortality was 1% (n = 9), 3% (n = 26), and 6% (n = 57) at 3, 10, and 30 days after BSI, respectively. In the 165 BSI (17%) associated with admission to the ICU, the median ICU stay was four days (IQR 2-10). Twenty-one percent of all infections (n = 203) were associated with central line removal within seven days of positive blood culture.

CONCLUSIONS

BSI in PHO and HSCT patients are associated with adverse outcomes. These data will assist in defining the impact of BSI in this population and demonstrate the need for quality improvement and research efforts to decrease them.

The American Society of Pediatric Hematology/Oncology workforce assessment: Part 1-Current state of the workforce

The American Society of Pediatric Hematology/Oncology (ASPHO) recognized recent changes in medical practice and the potential impact on pediatric hematology-oncology (PHO) workforce. ASPHO surveyed society members and PHO Division Directors between 2010 and 2016 and studied PHO workforce data collected by the American Board of Pediatrics and the American Medical Association to characterize the current state of the PHO workforce. The analysis of this information has led to a comprehensive description of PHO physicians, professional activities, and workplace. It is important to continue to collect data to identify changes in composition and needs of the PHO workforce.

The American Society of Pediatric Hematology/Oncology workforce assessment: Part 2-Implications for fellowship training

The American Society of Pediatric Hematology/Oncology (ASPHO) solicited information from division directors and fellowship training program directors to capture pediatric hematology/oncology (PHO) specific workforce data of 6 years (2010-2015), in response to an increase in graduating fellows during that time. Observations included a stable number of physicians and advanced practice providers (APPs) in clinical PHO, an increased proportion of APPs hired compared to physicians, and an increase in training-level first career positions. Rapid changes in the models of PHO care have significant implications to current and future trainees and require continued analysis to understand the evolving discipline of PHO.

Eradication of factor VIII inhibitors in patients with mild and moderate hemophilia A

In hemophilia A, up to 25% of new antifactor VIII (FVIII) inhibitory antibodies (inhibitors) occur in patients with mild or moderate disease. Once the inhibitor develops, options for management include observation, immune modulation, and immune tolerance induction (ITI). Currently, there is little data to guide a clinician's management decisions. In a case series, eight of the 26 subjects with mild or moderate hemophilia complicated by an inhibitor underwent ITI; two were successful, two were unsuccessful, and four were partially successful. In a systematic review of the literature, 12 of the 16 patients with mild or moderate hemophilia responded to rituximab for treatment to eradicate the inhibitor. To increase our understanding of treatment options for inhibitor eradication in patients with mild or moderate hemophilia A complicated by an inhibitor, a secondary analysis of clinical and treatment characteristics in a cohort of 36 patients with mild or moderate hemophilia A and inhibitor was undertaken. In multivariate analyses, rituximab alone (n = 6) and other immune-modulating treatments alone (n = 2) were significantly associated with an increased likelihood of inhibitor clearance [hazard ratio (HR) = 4.4 (95% CI = 1.06–20.03) and 10.21 (95% CI = 1.17–78.28), respectively], whereas ITI alone (n = 9) was not [HR = 1.35 (95% CI = 0.44–4.07)].

Growth hormone therapy for short stature in Diamond Blackfan anemia

BACKGROUND

We report a 13-year-old male with Diamond Blackfan anemia and short stature. He had a normal biochemical response to growth hormone (GH) stimulation, but his bone age was delayed, his insulin-like growth factor 1 (IGF-1) was low, and he had a poor growth velocity. He was started on daily GH injections.

METHODS

From the patient's medical record the following data were collected: serial heights, serial weights, hemoglobin, hematocrit, bone age, IGF-1, and steroid dose.

RESULTS

This patient had an increase in growth velocity up to 8.2 cm/year.

CONCLUSIONS

Growth hormone therapy should be considered in children with DBA, short stature and poor growth velocity.

Diminished antibody response to hepatitis B immunization in children with sickle cell disease

Hepatitis B surface antibody titers were routinely measured in 150 children with sickle cell disease (SCD) after immunization, and the seroconversion rate was found to be lower than that in the general population (89% vs. 97%, P = 0.002). Most of the children who did not seroconvert after the series of 3 immunizations responded to booster injections (93%). Therefore, we recommend the measurement of hepatitis B surface antibody titers after immunization in those children with SCD at greatest risk for hepatitis B infection. An additional dose of hepatitis B vaccine should be administered to those without evidence of seroconversion.

Streptococcus pneumoniae sepsis and meningitis during the penicillin prophylaxis era in children with sickle cell disease

The purpose of this study was to determine the age-related risks, disease-specific risks, and characteristics of serious pneumococcal infections in children with sickle cell disease (SCD) while penicillin prophylaxis was standard. The clinical experiences of three pediatric sickle cell programs spanning January 1, 1992, to May 31, 1998, were combined. Data were collected regarding the patients followed up and the characteristics of bacteremia and meningitis cases. Forty-seven pneumococcal infections (44 bacteremia, 3 meningitis) among 40 patients with SCD were observed. Forty infections occurred in children with homozygous hemoglobin S (SS) during 4108 patient-years at a median age of 22 months; 7 occurred in double heterozygous hemoglobin SC (SC) children during 1777 patient-years at a median age of 23 months. Ten infections occurred among 9 SS children 5 years or older. Most children in whom infections developed were reportedly taking prophylactic penicillin and when older than 24 months old had received Pneumovax (Merck & Co., Inc., West Point, PA, U.S.A. The following pneumococcal serotypes were identified in 15 cases studied: 6A, 6B, 9V, 14, 15B, 18B, 18F, 19F, and 23F. Infections resulted in five deaths and two strokes. The observed severe pneumococcal infection rate in SS children younger than 5 years was less than that reported before penicillin prophylaxis, supporting routine penicillin prophylaxis in this specific population. The optimal duration of penicillin prophylaxis in older children with SCD remains unknown. The administration of 7-valent Prevnar (Wyeth Lederle Vaccines, Philadelphia, PA, U.S.A.) to children younger than 24 months old with SCD should be beneficial, based on the serotype data.