Obstructive sleep apnea (OSA) is a common disease that is often under-diagnosed and under-treated in all ages. This is due to differences in morphology, diversity in clinical phenotypes, and differences in diagnosis and treatment of OSA in children and adults, even among individuals of the same age. Therefore, a personalized medicine approach to diagnosis and treatment of OSA is necessary for physicians in clinical practice. In children and adults without serious underlying medical conditions, polysomnography at sleep labs may be an inappropriate and inconvenient testing modality compared to home sleep apnea testing. In addition, the apnea–hypopnea index should not be considered as a single parameter for making treatment decisions. Thus, the treatment of OSA should be personalized and based on individual tolerance to sleep-quality-related parameters measured by the microarousal index, harmful effects of OSA on the cardiovascular system related to severe hypoxia, and patients’ comorbidities. The current treatment options for OSA include lifestyle modification, continuous positive airway pressure (CPAP) therapy, oral appliance, surgery, and other alternative treatments. CPAP therapy has been recommended as a cornerstone treatment for moderate-to-severe OSA in adults. However, not all patients can afford or tolerate CPAP therapy. This narrative review seeks to describe the current concepts and relevant approaches towards personalized management of patients with OSA, according to pathophysiology, cluster analysis of clinical characteristics, adequate combined therapy, and the consideration of patients’ expectations.

Symptoms control remains challenging for most patients with asthma. This study was conducted to evaluate the level of asthma symptoms control and lung function over 5 years of GINA (Global INitiative for Asthma) implementation. We included all patients with asthma who had been managed following GINA recommendations at the Asthma and COPD Outpatient Care Unit (ACOCU) of the University Medical Center in Ho Chi Minh City, Vietnam from October 2006 to October 2016. Of 1388 patients with asthma managed following GINA recommendations, the proportion of patients with well-controlled asthma significantly improved from 2.6% at baseline to 66.8% at month 3, 64.8% at year 1, 59.6% at year 2, 58.6% at year 3, 57.7% at year 4, and 59.5% at year 5 (p < 0.0001 for all comparisons). The proportion of patients with persistent airflow limitation significantly decreased from 26.7% at baseline to 12.6% at year 1 (p < 0.0001), 14.4% at year 2 (p < 0.0001), 15.9% at year 3 (p = 0.0006), 12.7% at year 4 (p = 0.0047), and 12.2% at year 5 (p = 0.0011). In patients with asthma managed according to GINA recommendations, asthma symptoms control and lung function improved after 3 months and the improvement was sustained over 5 years.

(1) Background: Exhaled nitric oxide (NO) has been considered as a biomarker of airway inflammation. The measurement of fractional exhaled NO (FENO) is a valuable test for assessing local inflammation in subjects with allergic rhinitis (AR). (2) Objective: To evaluate (a) the correlation between nasal FENO with anthropometric characteristics, symptoms of AR and nasal peak flows in children without and with AR; and (b) the cut-off of nasal FENO for diagnosis of AR in symptomatic children. (3) Methods: The study was a descriptive and cross-sectional study in subjects with and without AR < 18 years old. All clinical and functional characteristics of the study subjects were recorded for analysis. They were divided into healthy subjects for the control group and subjects with AR who met all inclusion criteria. (4) Results: 100 subjects (14 ± 3 years) were included, including 32 control subjects and 68 patients with AR. Nasal FENO in AR patients was significantly higher than in control subjects: 985 ± 232 ppb vs. 229 ± 65 ppb (p < 0.001). In control subjects, nasal FENO was not correlated with anthropometric characteristics and nasal inspiratory or expiratory peak flows (IPF or EPF) (p > 0.05). There was a correlation between nasal FENO and AR symptoms in AR patients and nasal IPF and EPF (p = 0.001 and 0.0001, respectively). The cut-off of nasal FENO for positive AR diagnosis with the highest specificity and sensitivity was ≥794 ppb (96.7% and 92.6%, respectively). (5) Conclusion: The use of nasal FENO as a biomarker of AR provides a useful tool and additional armamentarium in the management of allergic rhinitis.

Trinh TH, et al. Yonsei Med J. 2024 Jul;65:e42. https://doi.org/10.3349/ymj.2023.0567

Background/Objectives: Asthma action plans (AAPs) are recommended for patients’ self-management of asthma and should be adapted to a country’s situation. This study aimed to develop expert consensus on the optimal structure, content, and action of asthma action plans for Vietnamese settings to ensure feasibility, acceptance, and implementation. Methods: A Delphi consensus was conducted over two rounds. The proposed items were evaluated by a Vietnamese panel of pulmonologists, allergists, tuberculosis/lung disease specialists, and general practitioners. Structured online questionnaires with five-point Likert scales were used. Consensus was defined as >80% agreement and <10% strong disagreement. Results: A total of 26 and 21 participants completed round 1 and round 2, respectively. The 4-zone format of AAP was preferred (42.3%) over the 3-zone (38.5%) or 2-zone (19.2%) formats. The AAP should include some key statements for asthma, symptoms for self-monitoring, an objective asthma control questionnaire, actions for changes in maintenance medication, and instructions in emergency situations. AAP zones should be classified by symptom frequency and severity. Patient actions should be tailored to their treatment regimen (MART or ICS/LABA + SABA). The APP might not include peak expiratory flow monitoring and oral corticosteroid self-administration for both the MART and ICS/LABA + SABA regimens and might not add SABA together with ICS dose escalation for the ICS/LABA + SABA regimen. Conclusions: This study established an expert consensus on fundamental AAP structural elements and actions for the Vietnamese. The failure to achieve consensus on PEF monitoring tools and OCS for the self-management of asthma exacerbation reflects concerns about medication abuse, especially in Vietnamese healthcare settings.

Background/Objectives: Asthma action plans (AAP) are recommended for patients’ self-management of asthma and should be adapted countries’ situation. This study aimed to develop expert consensus on the optimal structure and content and action of asthma action plans for Vietnamese settings to ensure feasibility, acceptance and implementation. Methods: A Delphi consensus conducted over two rounds. The proposed items were evaluated by a Vietnamese panel of pulmonologists, allergist, tuberculosis/lung disease specialists and general practitioners. Structured online questionnaires with 5-point Likert scales were used. Consensus was defined as >80% agreement and < 10% strong disagreement. Results: 26 and 21 participants completed round 1 and round 2, respectively. 4-zone of AAP was preferred (42.3%) over 3-zone (38.5%) or 2-zone (19.2%). AAP should include some key statements for asthma, symptoms for self-monitoring, objective asthma control questionnaire, actions for changes of maintenance medication and instructions in emergency situations. AAP zones should be classified on symptom frequency and severity. Patient actions should be tailored to their treatment regimen (MART or ICS/LABA + SABA). APP might not include peak expiratory flow monitoring and oral corticosteroid self-administration for both MART and ICS/LABA + SABA regimen, and might not add SABA together with ICS dose escalation for ICS/LABA + SABA regimen. Conclusions: This study established an expert consensus on fundamental AAP structural elements and actions for the Vietnamese. The failure to achieve consensus on PEF monitoring tools and OCS for self-management of asthma exacerbation reflects concerns about medication abuse, especially in Vietnam healthcare settings.