Dataset Information

Improvement in Pulmonary Function Following Discontinuation of Vaping or E-Cigarette Use in Adolescents with EVALI.

ABSTRACT: Introduction: In 2019, an alarming number of cases coined as e-cigarette, or vaping, product use-associated lung injury (EVALI) were described in adolescents ranging from mild respiratory distress to fulminant respiratory failure. Limited data have been published on outcomes at short-term follow-up. We aimed to describe pulmonary manifestations, function, and radiologic findings after corticosteroid therapy in a cohort of adolescent patients. Methods: A retrospective chart analysis of all patients presenting to our institution between July 2019 and December 2019 with EVALI was conducted. Patients who had pulmonary follow-up were included. Spirometry was performed before discharge from the hospital and during outpatient follow-up. A paired t-test was used to compare serial spirometry data between visits. Results: Eight patients (6 males) were included. Two patients required intubation with mechanical ventilation, 2 required bilevel positive airway pressure, and 3 required oxygen supplementation. All patients received glucocorticoids (3 receiving pulse dosing). Initial spirometry revealed decreased forced expiratory volume in one second and forced vital capacity with clinically and statistically significant improvement at follow-up (mean follow-up was 46.5 days). Radiographic manifestations also improved after vaping was discontinued. Conclusion: In our cohort of patients with EVALI, at short-term follow-up, all normalized their spirometry parameters and showed clinical resolution of symptoms.

SUBMITTER: Lee SA

PROVIDER: S-EPMC8082033 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature

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Improvement in Pulmonary Function Following Discontinuation of Vaping or E-Cigarette Use in Adolescents with EVALI.

Lee Stanley A SA Sayad Edouard E Yenduri Naga Jaya Smitha NJS Wang Kevin Yuqi KY Guillerman Robert Paul RP Farber Harold J HJ

Pediatric allergy, immunology, and pulmonology 20210301 1

Introduction: In 2019, an alarming number of cases coined as e-cigarette, or vaping, product use-associated lung injury (EVALI) were described in adolescents ranging from mild respiratory distress to fulminant respiratory failure. Limited data have been published on outcomes at short-term follow-up. We aimed to describe pulmonary manifestations, function, and radiologic findings after corticosteroid therapy in a cohort of adolescent patients. Methods: A retrospective ...[more]

PMID: 33734875

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Project description:BackgroundSince August, 2019, US public health officials have been investigating a national outbreak of e-cigarette, or vaping, product use-associated lung injury (EVALI). A spectrum of histological patterns consistent with acute to subacute lung injury has been seen in biopsies; however, autopsy findings have not been systematically characterised. We describe the pathological findings in autopsy and biopsy tissues submitted to the US Centers for Disease Control and Prevention (CDC) for the evaluation of suspected EVALI.MethodsBetween Aug 1, 2019, and Nov 30, 2019, we examined lung biopsy (n=10 individuals) and autopsy (n=13 individuals) tissue samples received by the CDC, submitted by 16 US states, from individuals with: a history of e-cigarette, or vaping, product use; respiratory, gastrointestinal, or constitutional symptoms; and either pulmonary infiltrates or opacities on chest imaging, or sudden death from an undetermined cause. We also reviewed medical records, evaluated histopathology, and performed infectious disease testing when indicated by histopathology and clinical history.Findings21 cases met surveillance case definitions for EVALI, with a further two cases of clinically suspected EVALI evaluated. All ten lung biopsies showed histological evidence of acute to subacute lung injury, including diffuse alveolar damage or organising pneumonia. These patterns were also seen in nine of 13 (69%) autopsy cases, most frequently diffuse alveolar damage (eight autopsies), but also acute and organising fibrinous pneumonia (one autopsy). Additional pulmonary pathology not necessarily consistent with EVALI was seen in the remaining autopsies, including bronchopneumonia, bronchoaspiration, and chronic interstitial lung disease. Three of the five autopsy cases with no evidence of, or a plausible alternative cause for acute lung injury, had been classified as confirmed or probable EVALI according to surveillance case definitions.InterpretationAcute to subacute lung injury patterns were seen in all ten biopsies and most autopsy lung tissues from individuals with suspected EVALI. Acute to subacute lung injury can have numerous causes; however, if it is identified in an individual with a history of e-cigarette, or vaping, product use, and no alternative cause is apparent, a diagnosis of EVALI should be strongly considered. A review of autopsy tissue pathology in suspected EVALI deaths can also identify alternative diagnoses, which can enhance the specificity of public health surveillance efforts.FundingUS Centers for Disease Control and Prevention.

Project description:"E-Cigarette (e-cig) Vaping-Associated Acute Lung Injury" (EVALI) has been linked to vitamin-E-acetate (VEA) and Δ-9-tetrahydrocannabinol (THC), due to their presence in patients' e-cigs and biological samples. Lacking standardized methodologies for patients' data collection and comprehensive physicochemical/toxicological studies using real-world-vapor exposures, very little data are available, thus the underlying pathophysiological mechanism of EVALI is still unknown. This review aims to provide a comprehensive and critical appraisal of existing literature on clinical/epidemiological features and physicochemical-toxicological characterization of vaping emissions associated with EVALI. The literature review of 161 medical case reports revealed that the predominant demographic pattern was healthy white male, adolescent, or young adult, vaping illicit/informal THC-containing e-cigs. The main histopathologic pattern consisted of diffuse alveolar damage with bilateral ground-glass-opacities at chest radiograph/CT, and increased number of macrophages or neutrophils and foamy-macrophages in the bronchoalveolar lavage. The chemical analysis of THC/VEA e-cig vapors showed a chemical difference between THC/VEA and the single THC or VEA. The chemical characterization of vapors from counterfeit THC-based e-cigs or in-house-prepared e-liquids using either cannabidiol (CBD), VEA, or medium-chain triglycerides (MCT), identified many toxicants, such as carbonyls, volatile organic compounds, terpenes, silicon compounds, hydrocarbons, heavy metals, pesticides and various industrial/manufacturing/automotive-related chemicals. There is very scarce published toxicological data on emissions from THC/VEA e-liquids. However, CBD, MCT, and VEA emissions exert varying degrees of cytotoxicity, inflammation, and lung damage, depending on puffing topography and cell line. Major knowledge gaps were identified, including the need for more systematic-standardized epidemiological surveys, comprehensive physicochemical characterization of real-world e-cig emissions, and mechanistic studies linking emission properties to specific toxicological outcomes.

Project description:IntroductionNews media can shape public perceptions about e-cigarettes, particularly in the context of ongoing uncertainty from the recent outbreak of e-cigarette or vaping product use-associated lung injury (EVALI). This study aimed to characterize news articles published about e-cigarettes in 2019, including before and during the EVALI outbreak.Aims and methodsUsing 24 e-cigarette-related search terms, we gathered all articles published in leading print and online U.S. news sources in 2019 from databases (i.e., Factiva, Access World News) and archival web sites (i.e., www.newspapers.com). We conducted a content analysis of e-cigarette themes and statements, identifying differences in themes between articles that did and did not mention EVALI.ResultsOf the 1643 e-cigarette news articles published in 2019, 62% mentioned EVALI. Frequency of e-cigarette articles peaked in September (n = 532) at the height of the EVALI outbreak. Among all articles discussing e-cigarettes, the most prevalent main topics were policy/regulation (45%) and health effects (35%). Articles that mentioned EVALI frequently discussed youth e-cigarette use (40%) and JUUL (33%). Compared to non-EVALI articles, EVALI articles were more likely to discuss health effects (p < .001) but less likely to discuss policies/regulations, except for flavor bans (47% of EVALI articles vs. 39% of non-EVALI articles, p = .002). EVALI articles were also less likely to discuss e-cigarettes being less risky than cigarettes (p = .005).ConclusionsE-cigarette news coverage was prevalent in 2019, and patterns in frequency and content reflected major events (i.e., EVALI). In turn, news media can shape public perceptions, and even policy, about e-cigarettes and must continue to be monitored.ImplicationsE-cigarette news coverage in 2019 was high, driven in large part by news coverage of the EVALI outbreak. Indeed, the peak in e-cigarette news articles in September directly coincided with the peak in EVALI cases in the United States. Of note, articles that mentioned EVALI frequently discussed youth e-cigarette use, JUUL, and flavor bans, which may have triggered national and state-level policy responses, and likely influenced public perceptions (including misperceptions) regarding the harms of e-cigarettes.

Project description:ImportanceResearch indicates that electronic cigarette (e-cigarette) use (vaping) among adolescents is associated with the initiation and progression of combustible cigarette smoking. The reasons for this association are unknown.ObjectiveTo evaluate whether use of e-cigarettes with higher nicotine concentrations is associated with subsequent increases in the frequency and intensity of combustible cigarette smoking and vaping.Design, setting, and participantsIn this prospective cohort study involving students from 10 high schools in the Los Angeles, California, metropolitan area, surveys were administered during 10th grade in the spring (baseline) and 11th grade in the fall (6-month follow-up) of 2015 to students who reported using e-cigarettes within the past 30 days and the nicotine concentration level they used at baseline.ExposuresSelf-report of baseline e-cigarette nicotine concentration of none (0 mg/mL), low (1-5 mg/mL), medium (6-17 mg/mL), or high (≥18 mg/mL) typically used during the past 30 days.Main outcomes and measuresFrequency of combustible cigarette smoking and e-cigarette use within the past 30 days (0 days [none], 1-2 days [infrequent], or ≥3 days [frequent]) and daily intensity of smoking and vaping (number of cigarettes smoked per day, number of vaping episodes per day, and number of puffs per vaping episode) at the 6-month follow-up.ResultsThe analytic sample included 181 students (96 boys [53.0%] and 85 girls [47.0%]; mean [SD] age, 16.1 [0.4] years). Each successive increase in nicotine concentration (none to low, low to medium, and medium to high) vaped was associated with a 2.26 (95% CI, 1.28-3.98) increase in the odds of frequent (vs no) smoking and a 1.65 (95% CI, 1.09-2.51) increase in the odds of frequent (vs no) vaping at follow-up after adjustment for baseline frequency of smoking and vaping and other relevant covariates. Use of e-cigarettes with high (vs no) nicotine concentration was associated with a greater number of cigarettes smoked per day at follow-up (adjusted rate ratio [RR], 7.03; 95% CI, 6.11-7.95). An association with a significantly greater number of vaping episodes per day was found with use of low (adjusted RR, 3.32; 95% CI, 2.61-4.03), medium (adjusted RR, 3.32; 95% CI, 2.54-4.10), and high (adjusted RR, 2.44; 95% CI, 1.63-3.24) nicotine concentrations (vs no nicotine) at baseline. Similar results were found for the number of puffs per vaping episode for low (adjusted RR, 2.05; 95% CI, 1.41-2.70), medium (adjusted RR, 3.39; 95% CI, 2.66-4.11), and high (adjusted RR, 2.23; 95% CI, 1.42-3.03) nicotine concentrations.Conclusions and relevanceThe results of this study provide preliminary evidence that use of e-cigarettes with higher nicotine concentrations by youths may increase subsequent frequency and intensity of smoking and vaping.

Dataset Information

Improvement in Pulmonary Function Following Discontinuation of Vaping or E-Cigarette Use in Adolescents with EVALI.

Publications

Improvement in Pulmonary Function Following Discontinuation of Vaping or E-Cigarette Use in Adolescents with EVALI.

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