Inhaled therapies targeting prostacyclin pathway in pulmonary hypertension due to COPD: systematic review.

Background: Pulmonary hypertension due to chronic obstructive pulmonary disease (COPD) and interstitial lung disease (ILD) is classified as group 3 pulmonary hypertension. Inhaled treprostinil, a prostaglandin I2 analogue also known as prostacyclin, has recently been approved as a first drug for patients with pulmonary hypertension secondary to ILD. However, due to a lack of evidence, no therapies are currently approved for those with COPD-associated pulmonary hypertension. Thus, this systematic review aims to summarise the current evidence to assess the impact of inhaled prostaglandin I2 analogue use on the pulmonary hemodynamics, exercise function, lung function, and gas exchange in patients with pulmonary hypertension due to COPD. Methods: We systematically searched the electronic databases of Medline, Embase, Scopus and Cochrane from inception to 1 February 2023. Studies of adult patients with a confirmed diagnosis of COPD-associated pulmonary hypertension who received inhaled drugs targeting the prostacyclin pathway were included in the systematic review. Case reports, systematic reviews, conference abstracts with no full text, non-full-text articles, non-English manuscripts and book chapters were excluded from this systematic review. A risk-of-bias assessment was carried out for the studies included in this review, using two different Cochrane risk-of-bias tools for randomised and non-randomised clinical trials. Results: A total of four studies met our inclusion criteria and were included in this systematic review. The results of one prospective clinical trial showed an improvement in the pulmonary hemodynamics (e.g., cardiac index, cardiac output and mean pulmonary artery pressure) in response to inhaled prostacyclin use in patients with pulmonary hypertension secondary to COPD. However, the severity of dyspnoea, lung function, exercise capacity and gas exchange were not affected when inhaled prostacyclin was used for patients with COPD-related pulmonary hypertension. Conclusion: This systematic review demonstrated that although inhaled prostacyclin does not seem to improve COPD-related outcomes (e.g., lung function and exercise capacity), short-term use of inhaled prostacyclin has the potential to reduce mean pulmonary artery pressure and pulmonary vascular resistance without impairing ventilation-perfusion mismatch. Further studies with larger sample sizes are warranted. Systematic review registration: CRD42022372803, https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=372803.

Cross-sectional study evaluating the impact of SARS-CoV-2 variants on Long COVID outcomes in UK hospital survivors.

OBJECTIVES: COVID-19 studies report on hospital admission outcomes across SARS-CoV-2 waves of infection but knowledge of the impact of SARS-CoV-2 variants on the development of Long COVID in hospital survivors is limited. We sought to investigate Long COVID outcomes, aiming to compare outcomes in adult hospitalised survivors with known variants of concern during our first and second UK COVID-19 waves, prior to widespread vaccination. DESIGN: Prospective observational cross-sectional study. SETTING: Secondary care tertiary hospital in the UK. PARTICIPANTS: This study investigated Long COVID in 673 adults with laboratory-positive SARS-CoV-2 infection or clinically suspected COVID-19, 6 weeks after hospital discharge. We compared adults with wave 1 (wildtype variant, admitted from February to April 2020) and wave 2 patients (confirmed Alpha variant on viral sequencing (B.1.1.7), admitted from December 2020 to February 2021). OUTCOME MEASURES: Associations of Long COVID presence (one or more of 14 symptoms) and total number of Long COVID symptoms with SARS-CoV-2 variant were analysed using multiple logistic and Poisson regression, respectively. RESULTS: 322/400 (wave 1) and 248/273 (wave 2) patients completed follow-up. Predictors of increased total number of Long COVID symptoms included: pre-existing lung disease (adjusted count ratio (aCR)=1.26, 95% CI 1.07, 1.48) and more COVID-19 admission symptoms (aCR=1.07, 95% CI 1.02, 1.12). Weaker associations included increased length of inpatient stay (aCR=1.02, 95% CI 1.00, 1.03) and later review after discharge (aCR=1.00, 95% CI 1.00, 1.01). SARS-CoV-2 variant was not associated with Long COVID presence (OR=0.99, 95% CI 0.24, 4.20) or total number of symptoms (aCR=1.09, 95% CI 0.82, 1.44). CONCLUSIONS: Patients with chronic lung disease or greater COVID-19 admission symptoms have higher Long COVID risk. SARS-CoV-2 variant was not predictive of Long COVID though in wave 2 we identified fewer admission symptoms, improved clinical trajectory and outcomes. Addressing modifiable factors such as length of stay and timepoint of clinical review following discharge may enable clinicians to move from Long COVID risk stratification towards improving its outcome.

Prevalence of Nomophobia and Its Association with Academic Performance Among Physiotherapy Students in Saudi Arabia: A Cross- Sectional Survey.

Background: Nomophobia is common among students in many healthcare disciplines, and its association with academic performance has been explore before. However, there is no available data on its prevalence and association with academic performance among undergraduate physiotherapy (PT) students in Saudi Arabia. Methods: Between 22 December 2022 and 30 January 2023, a cross-sectional survey was conducted by dissemination using an online platform (Survey Monkey). Results: In total, 806 PT students, with males accounting for 494 (61%), responded to the survey. The prevalence of nomophobia among PT students was 98.4% (793). The mean (±SD) of the total NMP-Q items scores was 49 (±17), indicating a mild level of nomophobia. Female PT students had significantly higher nomophobia scores than the males (47 (39-65); 44 (38-52); (p < 0.001)). Non-smokers had significant higher nomophobia scores than smokers (46 (38-61); 44 (38-49); (p = 0.004)). Regarding grade point averages (GPA), the students with a GPA of less than 3.49 had the highest nomophobia score (51 (43-74); p <0.001)). Concerning the stage of their studies, bridging students had the highest nomophobia score (51 (34-76); p = 0.023)). Regarding academic warnings, those who reported no academic warnings had the highest nomophobia score (46 (42-50); p = 0.023)). Finally, regarding study hours, the students who spent ≥ five hours studying per week had the highest nomophobia score (54 (42-68); p < 0.001)). Conclusion: Nomophobia is common among PT students, with the majority experiencing a mild level. Being female, non-smoker, and having a higher academic performance were risk factors associated with higher nomophobia levels.

Diagnostic testing for interstitial lung disease in common variable immunodeficiency: a systematic review.

Introduction: Common variable immunodeficiency related interstitial lung disease (CVID-ILD, also referred to as GLILD) is generally considered a manifestation of systemic immune dysregulation occurring in up to 20% of people with CVID. There is a lack of evidence-based guidelines for the diagnosis and management of CVID-ILD. Aim: To systematically review use of diagnostic tests for assessing patients with CVID for possible ILD, and to evaluate their utility and risks. Methods: EMBASE, MEDLINE, PubMed and Cochrane databases were searched. Papers reporting information on the diagnosis of ILD in patients with CVID were included. Results: 58 studies were included. Radiology was the investigation modality most commonly used. HRCT was the most reported test, as abnormal radiology often first raised suspicion of CVID-ILD. Lung biopsy was used in 42 (72%) of studies, and surgical lung biopsy had more conclusive results compared to trans-bronchial biopsy (TBB). Analysis of broncho-alveolar lavage was reported in 24 (41%) studies, primarily to exclude infection. Pulmonary function tests, most commonly gas transfer, were widely used. However, results varied from normal to severely impaired, typically with a restrictive pattern and reduced gas transfer. Conclusion: Consensus diagnostic criteria are urgently required to support accurate assessment and monitoring in CVID-ILD. ESID and the ERS e-GLILDnet CRC have initiated a diagnostic and management guideline through international collaboration. Systematic review registration: https://www.crd.york.ac.uk/prospero/, identifier CRD42022276337.

Prevalence of Nomophobia and Its Impact on Academic Performance Among Respiratory Therapy Students in Saudi Arabia.

Background: Nomophobia has been highly prevalent among health discipline students. However, there is no available data on the prevalence of nomophobia among respiratory therapy (RT) students in Saudi Arabia. Methods: A cross-sectional survey using the nomophobia questionnaire (NMP-Q) was conducted and distributed using a convenience sample of RT students through an online platform (Survey Monkey) between September and November 2022. Results: Overall, 1428 RT students, with males accounting for 773 (54%), responded to the online survey. The prevalence of nomophobia among RT students was 97.3% (1390). The mean (±SD) of the total NMP-Q items scores was 62 (±22), indicating a moderate level of nomophobia among the RT students. Female RT students had significantly higher nomophobia scores than male RT students (63 (47-80) vs 59 (43-75); p <0.001)). Single RT students had significantly higher nomophobia scores than married RT students (62 (46-78) vs 46 (37-64); p <0.001)). RT students who were living outside the family home had significantly higher nomophobia scores than RT students who were living with their family (66 (54-78) vs 60 (44-77); p = 0.001)). RT students with a GPA of 4.50 to 5.00 had the highest nomophobia score (63 (46-79); p = 0.005)). RT students who were in their third year had the highest nomophobia score (66 (48-80); p <0.001)). RT students who reported no academic warnings had the highest nomophobia score (63 (48-80); p <0.001)). RT students who spent ≥ five hours studying per week had the highest nomophobia score (64 (51-80); p <0.001)). Conclusion: Nomophobia is common among RT students, with the majority experiencing a moderate level. Being female, single, living outside the family home, and having a higher academic performance were risk factors associated with higher nomophobia levels.

Corticosteroid-induced remission and mycophenolate maintenance therapy in granulomatous lymphocytic interstitial lung disease: long-term, longitudinal change in lung function in a single-centre cohort.

Aim: The aim of the study was to evaluate the response in lung function to different treatment regimens for common variable immunodeficiency patients with granulomatous lymphocytic interstitial lung disease (GLILD). Method: A longitudinal retrospective cohort study was carried out. Patients were divided into three groups. To assess the response to different treatments, we compared baseline lung function with post-treatment tests. Results: 14 patients with GLILD were included, seven of whom were treated with acute corticosteroids for a mean duration of 132±65 days. Spirometry results were unchanged, but there was a significant improvement in diffusing capacity of the lung for carbon monoxide (D LCO)% and transfer coefficient of the lung for carbon monoxide (K CO)% (median change in D LCO%=7%, p=0.04, and K CO%=13%, p=0.02). Relapse occurred in three out of seven patients. Five patients were treated with long-term mycophenolate mofetil (MMF) with/without corticosteroids for a mean duration of 1277±917 days. No changes were found in spirometry; however, there was a significant increase in D LCO% and K CO% (median change in each of D LCO% and K CO%=10%, p=0.04). Four patients on steroids with MMF successfully weaned the prednisone dose over 12 months. Four patients never received immunosuppression therapy. A significant decline was found in their lung function assessed over 7.5 years. The median reduction in the forced vital capacity (FVC)%, forced expiratory volume in 1 s (FEV1)% and D LCO% was 15%, 7% and 15%, equivalent to 2%, 1% and 2% per year, respectively. Conclusion: Corticosteroids improve gas transfer in GLILD, but patients often relapse. The use of MMF was associated with long-term effectiveness in GLILD and permits weaning of corticosteroids. A delay in initiating and continuing maintenance treatment could lead to disease progression.

Granulomatous-lymphocytic interstitial lung disease: an international research prioritisation.

The first ever research prioritisation exercise in GLILD: this survey identified areas of interest in the diagnosis, treatment and management of GLILD, which can be used as a roadmap for future research https://bit.ly/3nVuzti.