Intensive Multidisciplinary Feeding Day Programs in the United States: A Report Regarding the Treatment Landscape.

Intensive multidisciplinary intervention is increasingly recognized as the standard of care for children with complex feeding problems. Much, however, remains unknown about this treatment model. This current qualitative, prospective study sought to identify intensive multidisciplinary day hospital programs operating in the US, describe the treatment approach, and summarize current capacity.

Clinical Correlates and Prevalence of Food Selectivity in Children with Autism Spectrum Disorder.

OBJECTIVE: To examine clinical correlates and prevalence of food selectivity (FS) - ie, self-restricted diet, reluctance to try new foods - in children with autism spectrum disorder (ASD) ascertained from a general outpatient autism clinic. STUDY DESIGN: A multidisciplinary team (pediatric nurse practitioner, psychologist and dietitian) assessed medical and psychosocial histories and dietary habits in 103 children with ASD (mean age = 5.8 ± 2.2 years; range 2-10). Parents rated child mealtime behavior on the Brief Autism Mealtime Behavior Inventory (BAMBI) and disruptive behavior on the Aberrant Behavior Checklist (ABC). Height and weight measurements were collected. Children were classified as FS or no FS based on parent reported intake and mealtime behavior. A 24-hour dietary recall was used to record intake percentages < 80%. Logistic regression and multivariable modeling were used to evaluate clinical correlates with FS. RESULTS: Of 103 children, 45.6% (n = 47) were classified as FS; 54.4% (n = 56) no FS. After adjusting for potential confounders, the odds of FS increased by 1.91 (95% CI: 1.38, 2.64, P < .001) for every half-SD increase in BAMBI total score and by 1.35 (95% CI: 1.05, 1.74, P = .020) for every half-SD increase in ABC Hyperactivity/Noncompliance. No group differences in anthropometrics or nutritional intake were identified. CONCLUSIONS: Food selectivity (FS) in children with ASD was strongly associated with greater severity of disruptive mealtime and hyperactivity/noncompliance behaviors. FS was not associated with anthropometrics or nutritional intake.

Quantitative impact of frenotomy on breastfeeding: a systematic review and meta-analysis.

BACKGROUND: Symptoms related to infant ankyloglossia/tongue-tie may deter mothers from breastfeeding, yet frenotomy is controversial. METHODS: Databases included PubMed, Embase, CINAHL, PsycINFO, Web of Science, and Google Scholar from 1961-2023. Controlled trials and cohort studies with validated measures of surgical efficacy for breastfeeding outcomes were eligible. Meta-analyses synthesized data with inverse-variance weighting to determine standardized mean differences (SMD) between pre-/postoperative scores. RESULTS: Twenty-one of 1568 screened studies were included. Breastfeeding self-efficacy improved significantly post-frenotomy: medium effect after 5-10 days (SMD 0.60 [95% CI: 0.48, 0.71; P < 0.001]), large effect after 1 month (SMD 0.91 [CI: 0.79, 1.04; P < 0.001]). Nipple pain decreased significantly post-frenotomy: large effect after 5-15 days (SMD -1.10 [CI: -1.49, -0.70; P < 0.001]) and 1 month (SMD -1.23 [CI: -1.79, -0.67; P = 0.002]). Frenotomy had a medium effect on infant gastroesophageal reflux severity at 1-week follow-up (SMD -0.63 [CI: -0.95, -0.31; P = 0.008]), with continued improvement at 1 month (SMD -0.41 [CI: -0.78, -0.05; P = 0.04]). From LATCH scores, breastfeeding quality improved after 5-7 days by a large SMD of 1.28 (CI: 0.56, 2.00; P = 0.01). CONCLUSIONS: Providers should offer frenotomy to improve outcomes in dyads with ankyloglossia-associated breastfeeding difficulties. PROTOCOL REGISTRATION: PROSPERO identifier CRD42022303838 . IMPACT: This systematic review and meta-analysis showed that breastfeeding self-efficacy, maternal pain, infant latch, and infant gastroesophageal reflux significantly improve after frenotomy in mother-infant dyads with breastfeeding difficulties and ankyloglossia. Providers should offer frenotomy to improve breastfeeding outcomes in symptomatic mother-infant dyads who face challenges associated with ankyloglossia.

Systematic review of pharmacological treatments that reduce conditioned taste aversions in rodents: A potential animal model of pediatric feeding disorder and avoidant/restrictive food intake disorder (ARFID).

Avoidant/restrictive food intake disorder (ARFID) is diagnosed when food avoidance leads to clinically significant nutritional, weight/growth, or psychosocial impairment. As many as 81.5% of children and adolescents diagnosed with ARFID have a history of a medical condition associated with pain, fatigue, or malaise. ARFID is diagnosed and treatment begins after the medical condition is resolved but food avoidance remains. Effective treatment involves repeated exposure to eating food and related stimuli aimed at creating inhibitory learning to counteract learned fears and aversions. Treatment usually involves positive reinforcement of food approach behavior and escape extinction/response prevention to eliminate food avoidant behavior. To shed light on the neural mechanisms that may maintain ARFID and to identify candidate pharmacological treatments for adjuncts to behavioral interventions, this paper systematically reviews research on drug treatments that successfully reduce conditioned taste aversions (CTA) in animal models by disrupting reconsolidation or promoting extinction. The mechanism of action of these treatments, brain areas involved, and whether these CTA findings have been used to understand human eating behavior are assessed. Collectively, the results provide insight into possible neural mechanisms associated with resuming oral intake following CTA akin to the therapeutic goals of ARFID treatment and suggest that CTA animal models hold promise to facilitate the development of interventions to prevent feeding problems. The findings also reveal the need to investigate CTA reduction in juvenile and female animals and show that CTA is rarely studied to understand disordered human feeding even though CTA has been observed in humans and parallels many of the characteristics of rodent CTA.

Preparedness of Speech Language Pathologists and Occupational Therapists to Treat Pediatric Feeding Disorder: A Cross-Sectional Survey.

BACKGROUND: Pediatric feeding disorder (PFD) is increasingly common and is often treated by speech language pathologists (SLPs) and occupational therapists (OTs) in the community setting. However, the preparedness of these disciplines to effectively address PFD is relatively unknown. METHODS: A national (US), online survey was disseminated to providers who assess and treat PFD. For the present analysis, the responses of SLPs (N = 418) and OTs (N = 195) related to their clinical background, educational background, post-graduate training, and self-rated clinical effectiveness were statistically analyzed and compared across the two disciplines. RESULTS: Both SLPs and OTs report feeling underprepared to work with PFD clients immediately following their academic training, but time spent in post-graduate training and years of clinical practice both significantly (p < 0.0001) increased feelings of effectiveness in assessing and treating PFD. Most SLPs and OTs pursued self-directed learning activities to increase competence, with the most common activities being article review, podcasts, and peer case review, although SLPs were significantly more likely to use podcasts (p < 0.0001) and peer review (p = 0.0004) than OTs. The most common barriers for providers were financial, time, travel, and institutional support barriers. CONCLUSIONS: While PFD is a key practice area of both SLPs and OTs, both provider groups feel unprepared and under-supported in providing competent care to these patients upon graduation. Future research and policy should support advancements in training for current SLPs and OTs related to PFD and address current barriers to a specialized educational pathway.

Feeding after congenital heart surgery: a mixed-methods study of the caregiver experience.

OBJECTIVES: Feeding difficulties after congenital heart surgery are a common concern for caregivers of children with CHD. Insight into the intricacies of their experience is lacking. With a better understanding, healthcare providers can continue to optimize the approach and support mechanisms for these families. This study will explore the psychosocial impacts on caregivers, define barriers to care, and identify areas to improve their care. STUDY DESIGN: This mixed-methods study combined semi-structured interviews with surveys. Purposive sampling targeted caregivers of a child who underwent heart surgery and was discharged with alternative enteral feeding access. A hybrid inductive-deductive methodology was used to analyse interview transcripts. Survey scores were compared to interview content for concordance. RESULTS: Fifteen interviews were conducted with socio-demographically diverse caregivers. Feeding difficulties were often identified as their greatest challenge, with the laborious feeding schedule, sleep deprivation, and tube management being common contributors. Most caregivers described feeling overwhelmed and worried. Time-intensive feeding schedules and lack of appropriate childcare options precluded caregivers' ability to work. Barriers to care included imperfect feeding education, proximity of specialist clinics, and issues with medical supply companies. Caregiver proposals for improved care addressed easing the transition home, improving emotional support mechanisms, and intensifying feeding therapy for expedited tube removal. CONCLUSION: This study describes the psychosocial toll on the caregiver, typical barriers to care, and ideas for improved provision of care. These themes and ideas can be used to advance the family-centered approach to feeding difficulties after heart surgery.

Assessing the US treatment landscape for paediatric feeding disorder: A survey of multidisciplinary providers.

BACKGROUND: Paediatric feeding disorder (PFD) is a common childhood condition, estimated to impact one in 37 American children under the age of five. Such high prevalence occurs against a backdrop of limited understanding of the community treatment landscape in the United States. METHOD: To better understand the community treatment landscape for PFD in the United States and identify provider and treatment delivery characteristics, we collected primary data through a web-based survey targeting providers from all four PFD domains (i.e., medical, nutritional, feeding skill, and/or psychosocial) between January 2022 and March 2022. The 71-item cross sectional survey focussed on patient, provider and treatment characteristics. We distributed the survey using an electronic survey tool through Feeding Matters listserv followed by solicitation to discipline specific listservs and professional networks. The analytic approach involved descriptive statistics compared across settings and provider types, focussing on respondents within the United States. RESULTS: Eighty-three percent of respondents reported practicing in the United States. Most of the US sample (74.3%) involved providers from the feeding skill domain (speech-language pathologist - SLP, occupational therapist - OT) who reported delivering care through early intervention or outpatient settings using responsive and sensory based approaches. These approaches lack rigorous empirical evaluation. CONCLUSIONS: Survey results suggest a need to support community providers in engagement with research activity to promote a better understanding of treatment approaches and outcomes associated with a large cohort of providers delivering care (i.e. SLPs, OTs) to patients with PFD.

Quantifying the Healthcare Burden of Pediatric Feeding Disorder after Congenital Heart Surgery.

OBJECTIVE: To determine the healthcare costs and use burden of pediatric feeding disorder after congenital heart surgery. STUDY DESIGN: A retrospective, population-based cohort study using claims data (2009-2018) was performed. Participants include patients aged 0-18 years who had undergone congenital heart surgery and were included in the insurance database ≥1 year after surgery. The main exposure variable was the presence of a pediatric feeding disorder, defined as a need for a feeding tube at discharge or diagnosis of dysphagia or feeding-related difficulty within the study timeframe. Main outcomes include overall and feeding-related medical care use, defined as readmissions and outpatient use, and feeding-related cost of care within 1 year of surgery. RESULTS: A total of 10 849 pediatric patients were identified, with 3347 (30.9%) presenting with pediatric feeding disorder within 1 year of surgery. Patients with pediatric feeding disorder spent a median of 12 days (IQR, 6-33 days) in the hospital, compared with 5 days (IQR, 3-8 days) in patients without (P < .001). Rate ratios for overall readmissions, feeding-related readmissions, feeding-related outpatient use, and cost of care over the first year after surgery were significantly increased at 2.9 (95% CI, 2.5-3.4), 5.1 (95% CI, 4.6-5.7), 7.7 (95% CI, 6.5-9.1), and 2.2 (95% CI, 2.0-2.3) among patients with pediatric feeding disorder as compared with those without. CONCLUSIONS: Pediatric feeding disorder after congenital heart surgery is associated with a significant healthcare burden. Multidisciplinary care for and research on this health condition is needed to identify optimal management strategies to reduce this burden and improve outcomes.

Changes in Medical Charges Following Intensive Multidisciplinary Intervention for Pediatric Gastrostomy Tube Dependence.

OBJECTIVE: Intensive multidisciplinary intervention (IMI) is the most evidence-based approach to treat pediatric feeding disorders. The goal of this exploratory study was to assess changes in health care charges for patients with gastrostomy tube dependence following participation in IMI compared to a waitlist control. METHODS: Medical charges were assessed for 9 families who participated in IMI compared to 6 control families on a multi-year waitlist for IMI. The IMI and control groups were compared on raw charges submitted as well as individual year-over-year changes in medical charges. RESULTS: The IMI group decreased health care charges by 71% on average in the year following IMI compared to the control group increasing charges by 22% over the same period. CONCLUSIONS: IMI also holds potential cost-savings in the year following treatment compared to children who do not receive treatment and adds to previous research focusing on long-term cost effectiveness of IMI.

A systematic review of parent report measures assessing the psychosocial impact of food allergy on patients and families.

BACKGROUND: Reducing the psychosocial impact of food allergy (FA) represents a top patient-centered research priority. This priority recognizes that psychosocial impact is an important outcome of current FA therapies (eg, oral immunotherapy), as well as interventions aimed at improving overall quality of life and illness adaptation. Reliable and valid measurement is a necessary prerequisite to developing and evaluating current and emerging FA therapies and potential changes in psychosocial impact. METHODS: In this systematic review, we applied the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement to evaluate available parent report measures assessing the psychosocial impact of pediatric IgE-mediated FA. RESULTS: The systematic search yielded 64 articles involving 13 unique measures. Measures were evaluated through the lens of the Patient Reported Outcomes Measurement Information System (PROMIS) guidelines. Findings indicated that available measures show some evidence of reliability and validity; however, none completely adhere to PROMIS guidelines for measure development. CONCLUSION: Results highlight a continued need to dedicate research to develop a measurement approach that assesses the full range of psychosocial impact that parents and families may experience as a result of FA, as well as serve as a research outcome as the field continues to develop effective treatments, including immunotherapy.

Toward Better Understanding of Pediatric Feeding Disorder: A Proposed Framework for Patient Characterization.

To establish a foundation for methodologically sound research on the epidemiology, assessment, and treatment of pediatric feeding disorder (PFD), a 28-member multidisciplinary panel with equal representation from medicine, nutrition, feeding skill, and psychology from seven national feeding programs convened to develop a case report form (CRF). This process relied upon recent advances in defining PFD, a review of the extant literature, expert consensus regarding best practices, and review of current patient characterization templates at participating institutions. The resultant PFD CRF involves patient characterization in four domains (ie, medical, nutrition, feeding skill, and psychosocial) and identifies the primary features of a feeding disorder based on PFD diagnostic criteria. A corresponding protocol provides guidance for completing the assessment process across the four domains. The PFD CRF promotes a standard procedure to support patient characterization, enhance methodological rigor, and provide a useful clinical tool for providers and researchers working with these disorders.

Intensive multidisciplinary feeding intervention for patients with avoidant/restrictive food intake disorder associated with severe food selectivity: An electronic health record review.

OBJECTIVE: Expert consensus increasingly recognizes intensive multidisciplinary intervention (IMI) as the standard of care to address chronic and severe feeding problems in pediatric populations. In this study, we examined the clinical presentation, intervention characteristics, and treatment outcomes for young children receiving IMI for avoidant restrictive rood intake disorder (ARFID) involving nutritional insufficiencies associated with severe food selectivity. METHOD: We followed the Strengthening the Reporting of Observational Studies in Epidemiology statement to conduct this retrospective chart review. The review focused on consecutive patients (birth to age 21 years) admitted to the IMI program over a 5-year period (June 2014 to June 2019). Inclusion criteria required micronutrient insufficiencies (vitamins A, B12, C, D, E; folic acid; calcium; iron; and zinc) and chronic mealtime refusal behavior (e.g., turning head away from food/spoon, pushing or throwing spoon, crying, screaming, and leaving the table) associated with severe food selectivity. RESULTS: Over the 5-year period, 63 of the patients met study entry requirements. Of these, 60 patients (50 boys and 10 girls; mean age = 72 ± 39 months; range = 23-181) completed intervention (95% treatment completion rate). At discharge, dietary diversity improved by 16 new therapeutic foods (range: 8-22), rapid acceptance and swallowing of new foods exceeded clinical benchmarks (80% or > bites), and risk for nutritional inadequacies declined for this patient cohort. DISCUSSION: Results of the current study support the benefits of IMI to increase dietary variety, improve mealtime behaviors, and enhance nutritional intake for children with ARFID presenting with severe food selectivity.

Feeding outcomes after paediatric cardiothoracic surgery: a retrospective review.

BACKGROUND: Feeding difficulty is a known complication of congenital heart surgery. Despite this, there is a relative sparsity in the available data regarding risk factors, incidence, associated symptoms, and outcomes. METHODS: In this retrospective chart review, patients aged 0-18 years who underwent congenital heart surgery at a single institution between January and December, 2017 were reviewed. Patients with feeding difficulties before surgery, multiple surgeries, and potentially abnormal recurrent laryngeal nerve anatomy were excluded. Data collected included patient demographics, feeding outcomes, post-operative symptoms, flexible nasolaryngoscopy findings, and rates of readmission within a 1-year follow-up period. Multivariable regression analyses were performed to evaluate the risk of an alternative feeding plan at discharge and length of stay. RESULTS: Three-hundred and twenty-six patients met the inclusion criteria for this study. Seventy-two (22.09%) were discharged with a feeding tube and 70 (97.22%) of this subgroup were younger than 12 months at the time of surgery. Variables that increased the risk of being discharged with a feeding tube included patient age, The Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery score, procedure group, aspiration, and reflux. Speech-language pathology was the most frequently utilised consulting service for patients discharged with feeding tubes (90.28%) while other services were not frequently consulted. The median length of stay was increased from 4 to 10 days for patients who required an enteral feeding tube at discharge. DISCUSSION: Multidisciplinary management protocol and interventions should be developed and standardised to improve feeding outcomes following congenital heart surgery.

Intensive Multidisciplinary Intervention for Young Children with Feeding Tube Dependence and Chronic Food Refusal: An Electronic Health Record Review.

OBJECTIVE: To assess characteristics and outcomes of young children receiving intensive multidisciplinary intervention for chronic food refusal and feeding tube dependence. STUDY DESIGN: We conducted a retrospective study of consecutive patients (birth to age 21 years) admitted to an intensive multidisciplinary intervention program over a 5-year period (June 2014-June 2019). Inclusion criteria required dependence on enteral feeding, inadequate oral intake, and medical stability to permit tube weaning. Treatment combined behavioral intervention and parent training with nutrition therapy, oral-motor therapy, and medical oversight. Data extraction followed a systematic protocol; outcomes included anthropometric measures, changes in oral intake, and percentage of patients fully weaned from tube feeding. RESULTS: Of 229 patients admitted during the 5-year period, 83 met the entry criteria; 81 completed intervention (98%) and provided outcome data (46 males, 35 females; age range, 10-230 months). All patients had complex medical, behavioral, and/or developmental histories with longstanding feeding problems (median duration, 33 months). At discharge, oral intake improved by 70.5%, and 27 patients (33%) completely weaned from tube feeding. Weight gain (mean, 0.39 ± 1 kg) was observed. Treatment gains continued following discharge, with 58 patients (72%) weaned from tube feeding at follow-up. CONCLUSIONS: Our findings support the effectiveness of our intensive multidisciplinary intervention model in promoting oral intake and reducing dependence on tube feeding in young children with chronic food refusal. Further research on the generalizability of this intensive multidisciplinary intervention approach to other specialized treatment settings and/or feeding/eating disorder subtypes is warranted.

The Autism Managing Eating Aversions and Limited Variety Plan vs Parent Education: A Randomized Clinical Trial.

OBJECTIVE: To assess the feasibility and initial efficacy of a structured parent training program for children with autism spectrum disorder and moderate food selectivity. STUDY DESIGN: This 16-week randomized trial compared the Managing Eating Aversions and Limited variety (MEAL) Plan with parent education. MEAL Plan (10 core and 3 booster sessions) provided parents with nutrition education and strategies to structure meals and expand the child's diet. Parent education (10 sessions) provided information about autism without guidance on nutrition, meal structure, or diet. In addition to feasibility outcomes, primary efficacy outcomes included the Clinical Global Impression - Improvement scale and the Brief Autism Mealtime Behaviors Inventory. Grams consumed during a meal observation served as a secondary outcome. RESULTS: There were 38 eligible children (19 per group, 32 males). For MEAL Plan, attrition was <10% and attendance >80%. Therapists achieved >90% fidelity. At week 16, positive response rates on the Clinical Global Impression - Improvement scale were 47.4% for the MEAL Plan and 5.3% for parent education (P < .05). The adjusted mean difference (SE) on Brief Autism Mealtime Behaviors Inventory at week 16 was 7.04 (2.71) points (P = .01) in favor of MEAL Plan. For grams consumed, the adjusted standard mean difference (SE) was 30.76 (6.75), also in favor of MEAL Plan (P = .001). CONCLUSIONS: The MEAL Plan seems to be feasible, and preliminary efficacy results are encouraging. If further study replicates these results, the MEAL Plan could expand treatment options for children with autism spectrum disorder and moderate food selectivity. TRIAL REGISTRATION: Clinicaltrials.gov: NCT02712281.

Avoidant/restrictive food intake disorder: A diagnosis at the intersection of feeding and eating disorders necessitating subtype differentiation.

Avoidant/restrictive food intake disorder (ARFID) is a diagnosis that sits squarely at the cross roads of feeding disorders and eating disorders. It is historically tied to feeding disorders as a replacement of the DSM-IV diagnosis of feeding disorder of infancy or early childhood. The revision process, however, extended the diagnostic umbrella by removing its predecessor's weight loss requirement and age of onset restriction (i.e., 6 years). Implications of this extension include capturing an older cohort of patients with ARFID accessing care at eating disorders clinics, as well as providing a diagnostic home to previously orphaned pediatric subgroups with feeding disorders that lacked a diagnostic home prior to DSM-5. While recognizing notable strengths of this now 5-year-old diagnostic entity, ARFID is largely recognized as a very heterogeneous condition that lacks specificity to best guide clinical and research activities. The current commentary discusses the implications of ARFID as a replacement and extension of the DSM-IV diagnosis of feeding disorder of infancy or early childhood and provides the rationale and guidance for developing a subtype taxonomy.

Radcliffe ARFID Workgroup: Toward operationalization of research diagnostic criteria and directions for the field.

OBJECTIVE: Since its introduction to the psychiatric nomenclature in 2013, research on avoidant/restrictive food intake disorder (ARFID) has proliferated highlighting lack of clarity in how ARFID is defined. METHOD: In September 2018, a small multi-disciplinary pool of international experts in feeding disorder and eating disorder clinical practice and research convened as the Radcliffe ARFID workgroup to consider operationalization of DSM-5 ARFID diagnostic criteria to guide research in this disorder. RESULTS: By consensus of the Radcliffe ARFID workgroup, ARFID eating is characterized by food avoidance and/or restriction, involving limited volume and/or variety associated with one or more of the following: weight loss or faltering growth (e.g., defined as in anorexia nervosa, or by crossing weight/growth percentiles); nutritional deficiencies (defined by laboratory assay or dietary recall); dependence on tube feeding or nutritional supplements (≥50% of daily caloric intake or any tube feeding not required by a concurrent medical condition); and/or psychosocial impairment. CONCLUSIONS: This article offers definitions on how best to operationalize ARFID criteria and assessment thereof to be tested in existing clinical populations and to guide future study to advance understanding and treatment of this heterogeneous disorder.

Analysis of Aortic Growth Rates in Uncomplicated Type B Dissection.

BACKGROUND: Uncomplicated type B dissections have historically been treated medically with hemodynamic control. Early progression of the disease and late aneurysmal dilation have been considered as indications for intervention. The aim of this study is to analyze growth rate patterns of type B dissections based on computed tomography (CT) measurements over time. METHODS: We conducted a retrospective review of patients with acute type B dissection from 2008 to 2014 who had at least 2 follow-up CT scans. Patients with rapid progression requiring interventions were also included. Using M2S software (M2S, Lebanon, NH), we calculated the mean centerline diameter of the true and false lumens at 3 different sites of the descending aorta. Growth rate was calculated as the change in maximal diameter between the first interval and last available CT scans. Primary outcome was to compare the growth rate pattern between the 2 time intervals. Secondary outcomes included early and delayed aortic intervention and overall mortality (OM). RESULTS: A total of 108 patients were included. Average age of patients was 58.7 years. Median follow-up time was 3 months for the first CT and 32 months for the second. OM was 27.8% (n = 30), whereas the disease-specific mortality was 11.1% (n = 12). Thirty-seven percent (n = 40) required operative intervention (18 open and 22 endovascular repair): 20 at 30 days, 12 at 12 months, and 8 patients at >1 year. Mean aortic growth rate was higher in the first time interval compared with the second: 0.89 vs. 0.19 mm/month (P < 0.05) at the proximal descending aorta, 1.01 vs. 0.18 mm/month (P < 0.05) at the mid-descending aorta, and 0.65 vs. 0.28 mm/month; (P < 0.05) at the distal descending aorta. Those who underwent intervention had a higher aortic growth rate at early and late interval (P < 0.05). Age and number of comorbidities were associated with OM. Thrombosis of the false lumen did not affect the mortality and intervention rate. CONCLUSIONS: Type B dissection is associated with aortic growth over time. The overall growth rate was not linear with a more prominent initial phase. Faster aortic growth rate is associated with an increased intervention rate, whereas advanced age and number of comorbidities are associated with increased mortality. Prospectively designed studies are needed to identify the subgroup of patients who may benefit from early intervention based on growth rate measurements.