Improving Home Ventilator Alarm Use Among Children Requiring Chronic Mechanical Ventilation

BACKGROUND AND OBJECTIVES

Children requiring long-term mechanical ventilation are at high risk of mortality. Setting ventilator alarms may improve safety, but best practices for setting ventilator alarms have not been established. Our objective was to increase the mean proportion of critical ventilator alarms set for those children requiring chronic mechanical ventilation followed in our pulmonary clinic from 63% to >90%.

METHODS

Using the Institute for Healthcare Improvement Model for Improvement, we developed, tested, and implemented a series of interventions using Plan-Do-Study-Act cycles. We followed our progress using statistical process control methods. Our primary interventions were: (1) standardization of the clinic workflow, (2) development of an algorithm to guide physicians in selecting and setting ventilator alarms, (3) updating that algorithm based on review of failures and inpatient testing, and (4) enhancing staff engagement to change the culture surrounding ventilator alarms.

RESULTS

We collected baseline data from May 1 to July 13, 2017 on 130 consecutive patients seen in the pulmonary medicine clinic. We found that 63% of critical ventilator alarms were set. Observation of the process, standardization of workflow, and adaptation of an alarm algorithm led to an increase to 85.7% of critical alarms set. Through revising our algorithm to include an apnea alarm, and maximizing provider engagement, more than 95% of critical ventilator alarms were set, exceeding our goal. We sustained this improvement through January 2021.

CONCLUSIONS

Our stepwise approach, including process standardization, staff engagement, and integration of an alarm algorithm, improved the use of ventilator alarms in chronically ventilated pediatric patients.

A Description of Children Dependent on Long Term Ventilation via Tracheostomy and Their Hospital Resource Use

PURPOSE

To describe the proportion of children with an index hospitalization in 2014 who had established long-term invasive ventilator dependence (LTVD), and determine regional variation in hospital length of stay, charges, and readmissions.

DESIGN AND METHODS

Multicenter, longitudinal, retrospective cohort study using a recently established algorithm to identify children with LTVD from the Pediatric Health Information System database with an index hospitalization at least once during 2014, excluding normal newborn care or chemotherapy, and the subset with established LTVD. Hospitals were grouped by geographic regions. Analysis included descriptive statistics and multi-variable mixed modeling for length of stay, charges, and readmissions.

RESULTS

Of the 615,883 unique children discharged from 45 children's hospitals in 2014, 2235 (0.4%) had established LTVD. Of these, 342 (15%) were hospitalized in the Northeast, 677 (30%) Midwest, 733 (32%) South and 481 (22%) West. Most had at least two complex chronic conditions (97%) and used a medical device for at least two body systems (71%). No statistically significant regional variation was found for length of stay, charges, or readmissions after adjustment for child demographics, admission type, disposition, primary diagnosis, ICU stay, and number of chronic conditions.

CONCLUSIONS

This study characterized the population of children with LTVD hospitalized in 2014. No regional variation was found for length of stay, charges, or readmissions.

PRACTICE IMPLICATIONS

Children with established LTVD make up a small subset of all children admitted to children's hospitals however, they require substantial, costly, multifaceted care as most have additional complex chronic conditions and require multiple medical devices.

The Impact of Socioeconomic Status on Time to Decannulation Among Children With Tracheostomies

OBJECTIVE

To determine if time to tracheostomy decannulation differs among children by socioeconomic status.

STUDY DESIGN

Case series with chart review.

SETTING

Tertiary pediatric medical center.

METHODS

Patients (≤21 years old) who underwent tracheostomy from January 1, 2011, to December 31, 2016. Patients were divided into 2 groups based on their socioeconomic status (SES), low SES and high SES. Principal components analysis was used to create an index for SES using census data obtained by the US Census Bureau's American Community Survey 5 year data profile from 2013 to 2017. Statistical analysis was performed using a χ² for categorical variables and Wilcoxon rank-sum test for continuous variables. A general linear model was constructed to control for clinical factors to understand the independent effect of SES on time to decannulation.

RESULTS

In total, 215 patients were included; of these patients, 111 patients (52%) were included in the high-SES group and 104 patients (48%) were included in the low-SES group. There was a significant difference in the time to decannulation for children based on SES status, with those children in the low-SES group taking on average 10 months longer to decannulate (38.7 vs 28.0 months, P = .0007). Median follow-up was 44.1 months (interquartile range, 29.6-61.3 months).

CONCLUSION

Health care disparities appear to exist among children undergoing decannulation of their tracheostomy tube. Patients with lower SES had a significantly longer time to decannulation than those with higher SES.

Timing of Initial Posttracheostomy Surveillance Endoscopy in Pediatric Patients

Objective

To determine the optimal timing of the first posttracheostomy microlaryngoscopy and bronchoscopy (MLB).

Study Design

Case series with chart review.

Setting

Tertiary pediatric medical center.

Subjects and Methods

Patients (<21 years of age) who underwent tracheostomy placement from January 1, 2011, to December 31, 2016. Patients were divided into early and late posttracheostomy surveillance groups (<6 weeks vs 6 to 14 weeks, respectively) based on the timing of their first posttracheostomy MLB. The primary outcome was to ascertain the clinical yield of the initial posttracheostomy MLB by documenting whether a medical or surgical treatment decision was made based on MLB findings.

Results

In total, 202 patients were included; of these patients, 162 met criteria for placement in the early group and 40 met criteria for the late group. There was no significant difference between the early and late groups regarding whether a medical or surgical decision was made at the time of the first MLB (21.5% vs 19%, respectively; P = .49). Multiple logistic regression identified that the presence of tracheostomy-related symptoms prior to MLB (odds ratio, 6.75; 95% confidence interval, 2.78-16.39) was the sole predictor of a medical or surgical decision being made at the first posttracheostomy MLB.

Conclusion

The presence of tracheostomy-related symptoms was predictive of a medical or surgical decision being made using information obtained at the time of the first posttracheostomy MLB. We thus recommend that surveillance endoscopy be initiated when tracheotomized children start to develop tracheostomy-related symptoms.

Thoracoscopic posterior tracheopexy for tracheomalacia: A minimally invasive technique

BACKGROUND

Tracheomalacia is the most common congenital abnormality of the trachea. Posterior tracheopexy to alleviate posterior intrusion contributing to dynamic tracheal collapse has been reported using thoracotomy or median sternotomy. Here we describe the minimally invasive operative technique of thoracoscopic posterior tracheopexy with bronchoscopic guidance.

OPERATIVE TECHNIQUE

After preoperative computed tomography and bronchoscopy, a right thoracoscopic approach is utilized. The esophagus is mobilized and the membranous trachea is sutured to the prevertebral fascia under direct bronchoscopic visualization. Immediate improvement in tracheal collapse is noted. No major complications are reported and length of stay is short. Aortopexy may also be required to address anterior vascular compression.

CONCLUSION

Thoracoscopic posterior tracheopexy is safe and feasible. Further studies with more patients and longer follow-up are needed to assess durability.

Identification of hospitalized tracheostomy and ventilator dependent patients in administrative data

BACKGROUND

Patients with established tracheostomy and ventilator dependence are hospitalized more frequently and use more healthcare resources than other patients with complex chronic conditions. However, data to compare variation in hospitalization and resource use among patients in this population across the United States is deficient, partly due to the lack of structured methods to query national databases.

AIM

Determine the best method for identifying the subset of children with established tracheostomy and ventilator dependence in Pediatric Health Information System (PHIS).

HYPOTHESIS

A combination of identifiable characteristics coded in the PHIS database can be used to identify the population of patients with established tracheostomy and ventilator dependence who are admitted to the hospital.

METHODS

This cross-sectional, retrospective cohort study used established methods to extract data from PHIS and assessed the sensitivity and specificity of an algorithm to identify patients with established tracheostomy and ventilator dependence as compared with a local registry of ventilator dependent patients.

RESULTS

A newly created algorithm identified >90% of the 157 patients with established tracheostomy and ventilator dependence hospitalized at our organization during 2014. The sensitivity and specificity of the algorithm to identify these patients was 91% and 99%, respectively.

CONCLUSIONS

This new algorithm can be used to reliably identify and further study healthcare utilization by this population of patients with established tracheostomy and ventilator dependence. In addition, future work can determine the applicability of this algorithm to other administrative datasets.

Bronchiectasis, Chronic Suppurative Lung Disease and Protracted Bacterial Bronchitis

Bronchiectasis is a structural airway disease characterized by dilated bronchi and bronchioles due to severe or recurrent lower airways inflammation. Bronchiectasis can occur as a result of chronic pulmonary aspiration. Bronchiectasis may also be associated with a wide variety of systemic diseases, which should be considered in the differential diagnosis. Children with bronchiectasis typically have a chronic or recurrent productive cough and carry a significant burden of disease with a considerable impact on quality of life. The diagnosis of bronchiectasis is made by high-resolution chest computerized tomography. Aggressive management of bronchiectasis is necessary to reduce the daily symptom burden and frequency of exacerbations. Chronic suppurative lung disease may be a precursor to bronchiectasis, only lacking the defining radiographic features of bronchiectasis. Children with chronic suppurative lung disease may have the same symptoms as children with bronchiectasis and should be treated similarly. Protracted bacterial bronchitis is defined as a cough lasting at least four weeks that responds to antibiotic therapy. Protracted bacterial bronchitis may occur following a viral respiratory tract infection. Protracted bacterial bronchitis can be treated with a prolonged course of empiric antibiotics. Further evaluation is necessary if a child with suspected protracted bacterial bronchitis does not adequately respond to antibiotics as chronic suppurative lung disease or bronchiectasis must be considered.

Structure and Functions of Pediatric Aerodigestive Programs: A Consensus Statement

Aerodigestive programs provide coordinated interdisciplinary care to pediatric patients with complex congenital or acquired conditions affecting breathing, swallowing, and growth. Although there has been a proliferation of programs, as well as national meetings, interest groups and early research activity, there is, as of yet, no consensus definition of an aerodigestive patient, standardized structure, and functions of an aerodigestive program or a blueprint for research prioritization. The Delphi method was used by a multidisciplinary and multi-institutional panel of aerodigestive providers to obtain consensus on 4 broad content areas related to aerodigestive care: (1) definition of an aerodigestive patient, (2) essential construct and functions of an aerodigestive program, (3) identification of aerodigestive research priorities, and (4) evaluation and recognition of aerodigestive programs and future directions. After 3 iterations of survey, consensus was obtained by either a supermajority of 75% or stability in median ranking on 33 of 36 items. This included a standard definition of an aerodigestive patient, level of participation of specific pediatric disciplines in a program, essential components of the care cycle and functions of the program, feeding and swallowing assessment and therapy, procedural scope and volume, research priorities and outcome measures, certification, coding, and funding. We propose the first consensus definition of the aerodigestive care model with specific recommendations regarding associated personnel, infrastructure, research, and outcome measures. We hope that this may provide an initial framework to further standardize care, develop clinical guidelines, and improve outcomes for aerodigestive patients.

Life-threatening airway bleeding after palliation of single ventricle congenital heart disease

Objective

To describe acute and mid-term outcomes following presentation with, and treatment for, life-threatening airway bleeding (hemoptysis) in palliated single ventricle congenital heart disease (SV-CHD).

Methods

Case series of patients with SV-CHD who presented to a large congenital heart centre with hemoptysis between 2004 and 2015.

Results

Twenty-one episodes of hemoptysis occurred in 12 patients (58% female, median 10.5 (IQR 7.2, 16.4) years). First hemoptysis episode occurred after Fontan completion (n=8), after superior cavopulmonary anastomosis (SCPA, n=3) and in one shunt-dependent patient. Bronchoscopy was performed in conjunction with catheterisation in 14/21 (67%) initial catheterisations. A specific anatomic source of airway bleeding was identified in 95% of bronchoscopy cases and was uniformly distributed in all lobar segments. Transcatheter intervention with systemic-to-pulmonary collateral artery (SPC) occlusion was performed in 28/30 catheterisations. Apart from increased airway bleeding during interventional bronchoscopy (37%), there were no procedural complications. Median hospital length of stay was 9.0 (3.5, 14.5) days with patients undergoing 1.0 (1.0,2.0) catheterisations per episode of hemoptysis. Two SCPA patients did not survive to discharge. During a median follow-up of 32.5 (12.5, 87.5) months, freedom from mortality was 75%, with all three deaths occurring in the SCPA group by 4 months posthemoptysis. Recurrent hemoptysis occurred in 60% of patients.

Conclusions

Despite the potentially life-threatening nature of hemoptysis in patients with SV-CHD, a policy of bronchoscopic evaluation and transcatheter treatment is safe and may contribute to low mortality at mid-term follow-up in Fontan patients. Hemoptysis in SCPA patients may portend a poor prognosis. Recurrent hemoptysis is common.