Lung Volume Research Articles

Safety and efficacy of CT-guided percutaneous radiofrequency ablation for non-small cell lung cancer: a single-center, single-arm analysis.

Non-small cell lung cancer (NSCLC) is a prevalent malignant tumor, and the commonly treatment modalities include surgery, radiotherapy, chemotherapy, etc. Currently, CT-guided percutaneous radiofrequency ablation (RFA) for the treatment of cancers has been widely performed. This study aimed to evaluate the safety and efficacy of this therapy in NSCLC patients. Thirty-five NSCLC patients were enrolled in this study and all received CT-guided percutaneous RFA therapy. The outcome measures included the changes in forced respiratory volume in the first second (FEV1), total lung volume (TLC), lesion size and computed tomography (CT) values of the region of interest (ROI) before and after treatment. The main efficacy measures comprised complete tumor ablation and local recurrence after initial treatment, as well as the objective response rate (ORR) and disease control rate (DCR) after 6 months of treatment. After receiving CT-guided percutaneous RFA therapy, the target lesion was effectively controlled and CT values gradually decreased. Besides, no significant changes were observed in the patient's lung function, postoperative complications were experienced by a total of 10 patients, primarily including pneumothorax, infection, lung hollowing. Fortunately, all these complications were successfully managed with appropriate treatment. Following the initial RFA treatment, 31 patients (88.57%) achieved complete ablation, while 6 patients experienced local recurrence. After 6 months of treatment, the ORR and DCR were found to be 68.57% and 82.86% respectively. CT-guided percutaneous RFA has demonstrated favorable safety and efficacy in the treatment of patients with NSCLC at different stages, which represented a promising therapeutic modality.

Local Injection of Stem Cells Can Be a Potential Strategy to Improve Bladder Dysfunction after Outlet Obstruction in Rats.

This study investigates whether hAFSCs can improve bladder function in partial bladder outlet obstruction (pBOO) rats by targeting specific cellular pathways. Thirty-six female rats were divided into sham and pBOO groups with and without hAFSCs single injection into the bladder wall. Cystometry, inflammation/hypoxia, collagen/fibrosis/gap junction proteins, and smooth muscle myosin/muscarinic receptors were examined at 2 and 6 weeks after pBOO or sham operation. In pBOO bladders, significant increases in peak voiding pressure and residual volume stimulated a significant upregulation of inflammatory and hypoxic factors, TGF-β1 and Smad2/3. Collagen deposition proteins, collagen 1 and 3, were significantly increased, but bladder fibrosis markers, caveolin 1 and 3, were significantly decreased. Gap junction intercellular communication protein, connexin 43, was significantly increased, but the number of caveolae was significantly decreased. Markers for the smooth muscle phenotype, myosin heavy chain 11 and guanylate-dependent protein kinase, as well as M2 muscarinic receptors, were significantly increased in cultured detrusor cells. However, hAFSCs treatment could significantly ameliorate bladder dysfunction by inactivating the TGFβ-Smad signaling pathway, reducing collagen deposition, disrupting gap junctional intercellular communication, and modifying the expressions of smooth muscle myosin and caveolae/caveolin proteins. The results support the potential value of hAFSCs-based treatment of bladder dysfunction in BOO patients.

Real-World Clinical Profile and Safety of Nintedanib in Systemic Sclerosis-Associated Interstitial Lung Disease: A Subgroup Analysis of Interstitial Lung Disease Data From an Interstitial Lung Disease (ILD) Specialty Clinic in India.

Systemic sclerosis (SSc) is a multisystem autoimmune disorder characterized by dysregulated innate and adaptive immunity. Interstitial lung disease (ILD) is a common and serious complication of SSc, often leading to significant morbidity and mortality. Consistent demographic characteristics that aid in the early diagnosis of ILD in SSc are lacking. This study aims to identify clinical and demographic parameters associated with ILD in SSc patients and assess the safety and tolerability of nintedanibwith other immunosuppressants. This study is a subgroup analysis of data from the ILD clinic at All India Institute of Medical Sciences Raipur, collected between January 2022 and January 2024. We assessed the clinical and demographic profiles, high-resolution computed tomography thorax patterns, autoantibody profiles, lung function, and treatments used in the patients. We enrolled 57 patients with SSc-associated ILD. The mean age of the participants was 39.0 ± 11.1 years, with 53 (92.9%) being women. The mean body mass index was 20.4 ± 4.32 kg/m². Dyspnea was the most common symptom, followed by skin tightening and cough. Antinuclear antibody tests were positive in 92.9% of patients, and anti-Scl-70 antibodies were positive in 57.9%. Rheumatoid arthritis-SSc overlap was observed in 15.8% of patients. The mean predicted forced vital capacity was 46.5 ± 19.9%, the mean predicted total lung capacity was 64.5 ± 20.4%, and the mean predicted diffusing capacity for carbon monoxide was 46.2 ± 15.7%. The mean six-minute walk distance was 360.3 ± 81.2 meters, and the mean King's Brief Interstitial Lung Disease score was 63.9 ± 10.7. Common radiological abnormalities included ground-glass opacities in 57.8%, traction bronchiectasis in 43.8%, and honeycombing in 28.07%. The predominant ILD pattern was nonspecific interstitial pneumonia. Patients received a combination of prednisolone (5 mg/day) with mycophenolate mofetil (63.2%), hydroxychloroquine (17.5%), cyclophosphamide (12.3%), and methotrexate (7.02%). Nintedanib, the only antifibrotic used, was administered to 17 (29.8%) patients. ILD is relatively common in SSc, particularly in patients with diffuse cutaneous SSc and those with anti-topoisomerase antibodies. Female patients comprised the predominant population in this study. Patients tolerated mycophenolate mofetil and cyclophosphamide well. Nintedanib was the only antifibrotic used, and all patients tolerated the combination of antifibrotics and immunosuppressants well. Early diagnosis is crucial to slow disease progression and preserve lung function. Our results highlight the need for vigilant screening in high-risk groups and suggest that MMF, cyclophosphamide, and nintedanib can be safely incorporated into treatment regimens, offering a potential strategy to improve patient outcomes.

High antinuclear antibody titer is associated with increased mortality risk in patients with idiopathic pulmonary fibrosis

Idiopathic pulmonary fibrosis (IPF) is a diagnosis of exclusion, requiring that potential etiologies of interstitial lung disease be ruled out. Antinuclear antibody (ANA) testing is commonly performed in individuals with IPF, but the clinical significance of ANA positivity remains uncertain. A retrospective search identified 161 patients diagnosed with IPF between May 2010 and January 2021. Data on ANA titers at the time of diagnosis were available in all cases. Mean age of the patients was 66.4 ± 9.6 years; 70.8% were male. ANA titers were high (≥ 1:160) in 25.4% of the cohort. Baseline characteristics were comparable between those with high and low ANA titers. During follow-up (median 28 months), 93 patients (57%) died. On Cox proportional-hazards analysis with lung transplantation entered as a competing risk and adjusting for potential confounders (age, sex, and baseline forced vital capacity and diffusing lung capacity for carbon monoxide), ANA ≥ 1:160, as a dichotomized variable, was significantly associated with case-specific mortality (HR 2.25, 95% CI 1.14−4.42, P = 0.02) and older age (for each 10-year increment, HR 1.55, 95% CI 1.07−2.25, P = 0.02). High ANA titers appear to be associated with increased mortality in IPF. This finding emphasizes the potential prognostic value of ANA testing. Further studies are needed to validate these findings and explore their implications for patient management.

Current Practices for Severe Alpha-1 Antitrypsin Deficiency Associated COPD and Emphysema

Alpha-1 antitrypsin deficiency is a genetic disorder that can lead to chronic obstructive pulmonary disease and emphysema. Although it is the most well-studied genetic risk factor for emphysema, data is still scarce. Traditionally, medical therapy is similar to standard chronic obstructive pulmonary disease patients. Over the past several decades, enzyme augmentation therapy has emerged as a highly utilized alpha-1 antitrypsin-specific therapy. It has become the standard of care for severe alpha-1 antitrypsin deficiency despite unclear effects on a multitude of clinical outcomes. Significant data supports interventional therapies, including lung volume reduction surgery and bronchoscopic lung volume reduction, for chronic obstructive pulmonary disease patients without alpha-1 antitrypsin deficiency. These interventions have less robust data in the treatment of alpha-1 antitrypsin-induced chronic obstructive pulmonary disease. This review will explore the data regarding various treatment options for severe alpha-1 antitrypsin deficiency associated with chronic obstructive pulmonary disease and emphysema.

Effects of Sodium-Glucose Cotransporter 2 Inhibitors in Diabetic and Non-Diabetic Patients with Advanced Chronic Kidney Disease in Peritoneal Dialysis on Residual Kidney Function: In Real-World Data.

Background and Objectives: Peritoneal dialysis (PD) is a renal replacement therapy modality in which the dialysis dose can be individually adapted according to the patients' residual kidney function (RKF). RKF is a crucial factor for technique and patient survival. Pharmacological strategies aimed at slowing the loss of RKF in patients on PD are limited. Therefore, we aimed to assess the potential effects and safety of sodium-glucose cotransporter 2 (SGLT-2) inhibitors on the preservation of RKF in patients with and without type 2 diabetes mellitus (T2DM) on PD during an average follow-up of 6 months. Materials and Methods: In this retrospective observational, single-center study on real-world data, we included patients from the Peritoneal Dialysis Unit of the Hospital General Universitario de Ciudad Real, who started treatment with SGLT-2 inhibitors during the period from December 2022 to December 2023. Data on analytical and clinical parameters, RKF, and peritoneal membrane transport function were retrospectively collected at months 0, 3, and 6. Results: Out of 31 patients in our unit, 16 prevalent patients initiated treatment with SGLT-2 inhibitors (13 empagliflozin and 3 dapagliflozin). A total of 62.5% were male and the mean age was 67.3 years. The baseline peritoneal ultrafiltration was higher in the non-diabetic patient (NDMP) group than in the diabetic patient (DMP) group. However, the residual diuresis volume, 24 h residual renal clearance rate of urea in urine, and 24 h proteinuria were higher in the DMP group than in the NDMP group. At the sixth month, patients in both groups preserved RKF and diuresis, with a trend towards a non-significant reduction in proteinuria and blood pressure. Only two patients of the DMP group presented adverse effects. Conclusions: The use of SGLT-2 inhibitors in our sample of patients with and without T2DM on PD appears to be safe and effective to preserve RKF.

Comprehensive appraisal of lung function in young COPD patients: a single center observational study

PurposeThe present study aimed to investigate the clinical characteristics and lung function impairment in young people diagnosed with chronic obstructive pulmonary disease (COPD).Patients and methodsWe retrospectively enrolled patients with COPD who underwent symptom assessment and comprehensive pulmonary function tests at the First Affiliated Hospital of Guangzhou Medical University between August 2017 and March 2022. The patients were categorized into two groups based on age: a young COPD group (aged 20–50 years) and an old COPD group (aged > 50 years).ResultsA total of 1282 patients with COPD were included in the study, with 76 young COPD patients and 1206 old COPD patients. Young COPD patients exhibited a higher likelihood of being asymptomatic, lower rates of smoking, and a lower smoking index compared to old COPD patients. Although young COPD patients had higher median post-bronchodilator forced expiratory volume in 1 s (post-BD FEV1) (1.4 vs.1.2 L, P = 0.019), diffusing capacity of the lung for carbon monoxide (DLCO) (7.2 vs. 4.6, P<0.001), and a lower median residual volume to total lung capacity ratio (RV/TLC) compared to their older counterparts, there were no differences observed in severity distribution by GOLD categories or the proportion of lung hyperinflation (RV/TLC%pred > 120%) between two groups. Surprisingly, the prevalence of reduced DLCO was found to be 71.1% in young COPD, although lower than in old COPD (85.2%).ConclusionYoung COPD showed fewer respiratory symptoms, yet displayed a similar severity distribution by GOLD categories. Furthermore, a majority of them demonstrated lung hyperinflation and reduced DLCO. These results underscore the importance of a comprehensive assessment of lung function in young COPD patients.

A dive into the physiological responses to maximal apneas, O2 and CO2 tables in apnea novices.

Apnea duration is dependent on three factors: oxygen storage, oxygen consumption, hypoxia and hypercapnia tolerance. While current literature focuses on maximal apneas to improve apnea duration, apnea trained individuals use timed-repeated submaximal apneas, called "O2 and CO2 tables". These tables claim to accommodate the body to cope with hypoxia and hypercapnia, respectively. The aim of this study was twofold. First, to investigate the determinants of maximal apnea duration in apnea novices. Second, to compare physiologic responses to maximal apneas, O2 and CO2 tables. After medical screening, lung function test and hemoglobin mass measurement, twenty-eight apnea novices performed three apnea protocols in random order: maximal apneas, O2 table and CO2 table. During apnea, peripheral oxygen saturation (SpO2), heart rate (HR), muscle (mTOI) and cerebral (cTOI) tissue oxygenation index were measured continuously. End-tidal carbon dioxide (EtCO2) was measured before and after apneas. Larger lung volumes, higher resting cTOI and lower resting EtCO2 levels correlated with longer apnea durations. Maximal apneas induced greater decreases in SpO2 (- 16%) and cTOI (- 13%) than O2 (- 8%; - 8%) and CO2 tables (- 6%; - 6%), whereas changes in EtCO2, HR and mTOI did not differ between protocols. These results suggest that, in apnea novices, O2 and CO2 tables did not induce a more profound hypoxia and hypercapnia, but a similar reduction in oxygen consumption than maximal apneas. Therefore, apnea novices should mainly focus on maximal apneas to improve hypoxia and hypercapnia tolerance. The use of specific lung training protocols can help to increase oxygen storage capacity.

Trend of prevalence and characteristics of preserved ratio impaired spirometry (PRISm): Nationwide population-based survey between 2010 and 2019.

This study aimed to evaluate the prevalence, trends, and factors of preserved ratio with impaired spirometry (PRISm) by using a nationally representative sample. The datasets of the Korea National Health and Nutrition Examination Survey 2010-2019 were used: of total 32,949 participants aged ≥40 and no missing data on spirometry, 24,523 with normal, 4,623 with obstructive, and 3,803 with PRISm were identified. PRISm was defined as FEV1/FVC ≥70% and FEV1% of the predicted value (%pred) <80. PRISm-lower limit of normal (LLN) was defined when FEV1/FVC ≥LLN and FEV1 <LLN. The prevalence and trend of PRISm were estimated using the Joinpoint regression method. The trend was calculated for the periods 2010-2015 and 2017-2019, due to a change in spirometry device in June, 2016. A complex sample multivariable-adjusted regression model was used to identify factors associating PRISm. Estimated average prevalence of PRISm was 10.4% (PRISm-LLN 11.1%). Joinpoint regression analyses found a relatively stable trend of PRISm for both fixed ratio and LLN. The multivariable-adjusted logistic regression model showed female sex, BMI ≥25 kg/m2, metabolic syndrome, hypertriglyceridemia, abdominal obesity, low HDL-choleterol, hypertension, and diabetes were associated with the increased probability of PRISm. Whenever a PRISm pattern is identified in a clinical context, it may be necessary to measure absolute lung volumes to investigate underlying physiological abnormalities and to identify factors that is modifiable.

Clinical Effect of Combination Therapy of Milrinone and Nifedipine in Treating Chronic Pulmonary Heart Disease

Objective: To analyze the therapeutic effect achieved and the occurrence of adverse reactions in patients with chronic pulmonary heart disease treated with milrinone combined with nifedipine. Methods: 120 cases of chronic pulmonary heart disease patients treated in the hospital from May 2023 to February 2024 were selected as research subjects, and based on the randomized numerical table method, the 120 patients were divided into the study group and the comparison group, and the treatment of milrinone combined with nifedipine was carried out for 60 patients in the study group, and the conventional treatment was carried out for 60 patients in the comparison group, so as to make a comparison on the therapeutic effect and the occurrence of adverse reactions of patients in the two groups. The therapeutic effects and adverse reactions of the two groups were compared. Results: After receiving medication of milrinone combined with nifedipine, the patients in the study group had an exertional lung capacity of 68.12 ± 5.63% and a maximal expiratory volume of 82.41 ± 7.84 L/min, which were significantly higher than those in the comparison group, and the total rate of adverse reactions of the patients in the study group was 1.67%, which was significantly lower than that of the comparison group, with a P value of &lt; 0.05, which is statistically significant. Conclusion: In the implementation of treatment for patients with chronic pulmonary heart disease, the treatment of milrinone combined with nifedipine can significantly improve the patient’s exertional lung capacity and maximum expiratory volume, and the chance of adverse reactions in patients will also be significantly reduced.

The Immediate Effect of Chest Mobilization Technique on Chest Expansion in Patients of COPD

Introduction: Chronic Obstructive Pulmonary Disease (COPD) is characterized by chronic airflow obstruction. Patients with COPD often experience reductions in lung volumes and vital capacity due to chronic respiratory muscle weakness. Additionally, they may exhibit decreased lung distensibility, leading to restrictions in lung volume. The passive recoil of the thoracic cage is influenced by gross muscle weakness, altering the neutral position at which lung and cage recoil pressures are balanced. Mobilizing rib cage joints is a specific therapeutic goal, as it aims to improve reduced rib cage mobility commonly observed in obstructive lung disease. Method: A study was conducted on COPD patients aged over 40 years, specifically including males with VC&lt;80%. Participants with unstable vital parameters, active lung infections, or those requiring continuous oxygen therapy or mechanical ventilation were excluded. The participants were divided into two groups: Group 1 received chest mobilization and breathing exercises, while Group 2 received only breathing exercises. Chest expansion measurements were taken at the 2nd intercostal space, 4th intercostal space, and xiphoid process in both groups before and after the procedures. Result: Result obtained from SPSS20. Mean-age of Group1 was (61.9+6.0) &amp; of Group2 was (62.05+6.1). Comparison between groups found using independent t-tests. There was significant difference of chest-expansion at 2nd IC, 4th IC and xiphoid process between both the groups. Chest-expansion at 2nd IC(M=2.0), 4th IC(M=2.85) and xiphoid process (M=3.43) was increased in group1 than group2 (M=1.58), (M=2.01) &amp; (M=2.49) having significant difference of p&lt;0.05. Conclusion: This study concludes that Chest Wall mobilization has significant effect on Chest-expansion in COPD patients. Hence Chest-Mobilization is definite tool for the improving condition of COPD patients, so it should be included as a part of management in COPD patients with other exercise treatment-programs. Keywords: Chest mobilization, COPD, Chest expansion, Cloth tape measurement

Identification of risk factors for acute exacerbation of idiopathic pulmonary fibrosis based on baseline high-resolution computed tomography: a prospective observational study

BackgroundThis study aimed to investigate risk factors for acute exacerbation of idiopathic pulmonary fibrosis (AE-IPF) based on baseline high-resolution computed tomography (HRCT).MethodsThis prospective observational study enrolled patients with IPF treated at the General Hospital of Ningxia Medical University between January 2019 and January 2021. HRCT-derived quantitative parameters at baseline were analyzed.ResultsA total of 102 patients [92 (90.2%) males with a mean age of 67 years] with IPF were included, with a median follow-up of 32 (24-40.5) months. AE occurred in 30 (29.4%) IPF patients. Multivariable logistic regression analysis identified Doppler transthoracic echocardiography suggestive of pulmonary hypertension (PH) (13.43; 95% CI: 4.18–41.09; P < 0.001), honeycombing (OR 1.08; 95% CI: 1.02–1.14; P = 0.013), and whole lung volume (OR 0.99; 95% CI: 0.99-1.00; P = 0.037) as independent risk factors for AE-IPF. The combination of PH, honeycombing, whole lung volume, and the percentage of predicted forced vital capacity (FVC% pred) showed a high area under the curve from receiver operating characteristic curves of 0.888, with a sensitivity of 90% and specificity of 78%.ConclusionsThis study emphasizes that quantitative CT parameters (honeycombing, whole lung volume) may serve as risk factors for AE-IPF. The combination of honeycombing, whole lung volume, FVC% pred, and PH may aid in predicting AE-IPF.

Apnoea as a novel method to improve exercise performance: A current state of the literature.

Acute breath-holding (apnoea) induces a spleen contraction leading to a transient increase in haemoglobin concentration. Additionally, the apnoea-induced hypoxia has been shown to lead to an increase in erythropoietin concentration up to 5h after acute breath-holding, suggesting long-term haemoglobin enhancement. Given its potential to improve haemoglobin content, an important determinant for oxygen transport, apnoea has been suggested as a novel training method to improve aerobic performance. This review aims to provide an update on the current state of the literature on this topic. Although the apnoea-induced spleen contraction appears to be effective in improving oxygen uptake kinetics, this does not seem to transfer into immediately improved aerobic performance when apnoea is integrated into a warm-up. Furthermore, only long and intense apnoea protocols in individuals who are experienced in breath-holding show increased erythropoietin and reticulocytes. So far, studies on inexperienced individuals have failed to induce acute changes in erythropoietin concentration following apnoea. As such, apnoea training protocols fail to demonstrate longitudinal changes in haemoglobin mass and aerobic performance. The low hypoxic dose, as evidenced by minor oxygen desaturation, is likely insufficient to elicit a strong erythropoietic response. Apnoea therefore does not seem to be useful for improving aerobic performance. However, variations in apnoea, such as hypoventilation training at low lung volume and repeated-sprint training in hypoxia through short end-expiratory breath-holds, have been shown to induce metabolic adaptations and improve several physical qualities. This shows promise for application of dynamic apnoea in order to improve exercise performance. HIGHLIGHTS: What is the topic of this review? Apnoea is considered as an innovative method to improve performance. This review discusses the effectiveness of apnoea (training) on performance. What advances does it highlight? Although the apnoea-induced spleen contraction and the increase in EPO observed in freedivers seem promising to improve haematological variables both acutely and on the long term, they do not improve exercise performance in an athletic population. However, performing repeated sprints on end-expiratory breath-holds seems promising to improve repeated-sprint capacity.

Effectiveness of Pranic Healing as complementary therapy on lower urinary tract symptoms and sleep: Single-blind randomized trial

BackgroundBenign Prostatic Hyperplasia (BPH) commonly affects older men, leading to lower urinary tract symptoms (LUTS) that affect sleep and quality of life. This study evaluates the effect of Pranic Healing (PH) as a complementary therapy for bothersome LUTS by normalising biofield energy centres called Chakras. MethodologyA single blind trial involving 76 men with LUTS was conducted, randomised into Medication-only (MED) and Medication-plus-Pranic Healing (MEDPH) groups. The MEDPH received PH sessions twice weekly for 5 weeks. ResultsThe study compared MED (n = 30) and MEDPH (n = 36) participants, finding significant improvements in IPSS scores (p ≤ .001) in both groups. The MEDPH group showed a greater reduction in incomplete bladder emptying and intermittency. The post void residual volume increased significantly in the MED group (Wilcoxon Z = −2.335, p = .02), while the MEDPH group reduced non-significantly. Sleep quality index improved significantly (McNemar=.013) in the MEDPH group, while the MED group showed no significant change. Subjective sleep quality, duration, and latency improved significantly in the MEDPH group. Healers reported improved energy balance in chakras of MEDPH group. Perceived energy by healers in lower chakra relates to urinary parameters. ConclusionPH could alleviate LUTS, enhancing quality of life due to urination, and improved sleep, among moderate BPH patients. Trial registrationThis study has been registered under the Clinical Trial Registry of India. (CTRI No: CTRI/2023/01/049004)

Bronchoscopic Lung Volume Reduction: A Review.

Bronchoscopic lung volume reduction (BLVR) is an established treatment modality for the management of advanced chronic obstructive pulmonary disease complicated by severe emphysema and hyperinflation refractory to other therapies. BLVR aims to reduce hyperinflation and residual volume, thereby improving pulmonary function, symptom control, and quality of life. Multiple distinct devices and technologies, including endobronchial coils, thermal vapor ablation, bio-lung volume reduction, and airway bypass stenting, have been developed to achieve lung volume reduction with varying degrees of accessibility and evidence. The most promising BLVR treatment modality to date has been the placement of one-way endobronchial valves (EBVs), with more than 25,000 cases performed worldwide. Identifying symptomatic patients who would benefit from BLVR is challenging and can be time and resource intensive, and candidacy may be limited by physiologic parameters. Additional new technologies may be able to improve the identification and evaluation of candidates as well as increase the portion of evaluated patients who ultimately qualify for BLVR. In this review, we aim to provide historical context to BLVR, summarize the available evidence regarding its use, discuss potential complications, and provide readers with a clear guide to patient selection and referral for BLVR, with a focus on EBV placement. In addition, we will highlight potential future directions for the field.

Relationship between lung vital capacity, nutritional status activity and motivation to exercise on physical fitness among students in Jakarta

This research aims to determine the vital capacity of the lungs, nutritional status, physical activity and motivation to exercise on physical fitness for students of Jakarta 140 Junior High School in 2019, a sample of 60 male and female students. This research uses a survey method to see the effect between variables. Data analysis techniques using path analysis. Path analysis technique is used to test the direct and indirect effects on vital lung capacity, nutritional status, physical activity and motivation to exercise on physical fitness in students of Jakarta 140 Junior High School. Path analysis technique with the help of SPSS program version 20.00 at the significance level α = 0.05. The results of this research are as follows: (1) The vital capacity of the lungs directly influences physical fitness; (2) Nutritional status directly influences physical fitness; (3) Physical activity directly influences physical fitness; (4) Sport motivation has a direct effect on physical fitness; (5) the vital capacity of the lungs directly affects the motivation to exercise; (6) Nutritional status directly influences sports motivation; (7) Physical activity directly influences the motivation to exercise; (8) Lung's vital capacity through motivation to exercise simultaneously has direct effect on physical fitness; (9) Nutritional status through motivation to exercise simultaneously has direct effect on physical fitness; and (10) Physical activity through motivation to exercise simultaneously has direct effect on physical fitness. Thus, the higher the lung's vital capacity, nutritional status, physical activity and motivation to exercise a person, the better the physical fitness level of the person and vice versa, the lower the vital capacity of the lungs, nutritional status, physical activity, then the lower the person's physical fitness level. Keywords: vital lung capacity, nutritional status, physical activity, exercise motivation, and physical fitness

Thoracic and vertebral deformities in lung transplantation: perioperative complications and long-term prognoses

BackgroundLung transplantation (LTx) is a crucial therapeutic strategy for patients suffering from end-stage respiratory diseases, necessitating precise donor-recipient size matching to ensure optimal graft function. While standard allocation protocols rely on predicted lung capacity based on factors such as sex, age, and height, a subset of patients with respiratory diseases presents an additional challenge – thoracic or vertebral deformities. These deformities can complicate accurate volume predictions and may impact the success of lung transplantation.MethodsIn this retrospective cohort study of patients who underwent LTx at Tohoku University Hospital between January 2007 and April 2022, with follow-up until October 2022, the primary objective was to assess the influence of thoracic and vertebral deformities on perioperative complications, emphasizing interventions, such as volume reduction surgery. The secondary objective aimed to identify any noticeable impact on long-term prognoses in recipients with these deformities.ResultsOf 129 LTx recipients analyzed, 17.8% exhibited thoracic deformities, characterized by pectus excavatum, while 16.3% had vertebral deformities. Perioperative complications, requiring delayed chest closure, tracheostomy, and volume reduction surgery, were more prevalent in the deformity group. Thoracic deformities were notably associated with the need for volume reduction surgery. However, long-term prognoses did not differ significantly between patients with deformities and those without. Vertebral deformities did not appear to significantly impact perioperative or long-term outcomes.ConclusionsThis study highlights the prevalence of thoracic deformities in LTx recipients, correlating with increased perioperative complications, particularly the potential need for volume reduction surgery. Importantly, these deformities do not exert a significant impact on long-term prognoses. Additionally, patients with vertebral deformities, such as scoliosis and kyphosis, appear to be manageable in the context of LTx.

Lung Volumes in a Mouse Model of Pulmonary Allergic Inflammation

PurposeAir trapping, often attested in humans by elevated residual volume (RV) and ratio of RV on total lung capacity (RV/TLC), is frequently observed in asthma. Confirming these alterations in experimental asthma would be important for translational purposes. Herein, lung volumes were investigated in a mouse model of pulmonary allergic inflammation.MethodsEight- to 10-week-old male C57BL/6 and BALB/c mice were exposed once daily to intranasal house dust mite (HDM) for 10 consecutive days. All readouts were measured 24 h after the last exposure. Lung volumes were assessed with the flexiVent using a new automated method consisting of degassing the lungs followed by a full-range pressure–volume maneuver. The weight and the volume of the lungs were also measured ex vivo and a lobe was further processed for histological analyses.ResultsHDM exposure led to tissue infiltration with inflammatory cells, goblet cell hyperplasia, thickening of the airway epithelium, and elevated ex vivo lung weight and volume. It also decreased TLC and vital capacity but without affecting RV and RV/TLC. These observations were similar between the two mouse strains.ConclusionAlterations of lung volumes in a murine model of pulmonary allergic inflammation are inconsistent with observations made in human asthma. These discrepancies reflect the different means whereby lung volumes are measured between species. The invasive method used herein enables RV to be measured more precisely and without the confounding effect of air trapping, suggesting that changes in RV and RV/TLC using this method in mice should be interpreted differently than in humans.

Impact of CrossFit Training Programs on the Physical Health and Sociogenic Somatic Anxiety of Adolescents.

A decline in adolescent health holds significant repercussions for public health. Promoting exercise is essential to improve physical and mental health among youth. This study aimed to explore the effect of CrossFit training programs on the physical health and sociogenic somatic anxiety of adolescents. In March 2023, 100 adolescents were openly recruited from eight middle schools in Jinhua, China. The participants, were divided equally into control and experimental groups, experienced either traditional or CrossFit training, respectively, over nine weeks. Evaluation measures included the analysis of social physique anxiety, body esteem, physical self-efficacy, and general physical health before and after the exercise program. Post-intervention data demonstrated marked reductions across all facets of the social physique anxiety scale, including worries about public scrutiny, anxiety from social comparison, and discomfort related to one's physical self-image, more so in the experimental group (P<0.05). Likewise, assessments of the physical self-perception profile and physical self-efficacy scale were enhanced, again with the experimental cohort displaying more pronounced improvements (P<0.05). Results from biophysical function evaluations indicated significant health improvements post-intervention, with noted advancements in lung capacity, aerobic fitness by the standing long jump, and muscular endurance as assessed by grip strength, sit-up, and push-up counts, primarily in the experimental group (P<0.05). CrossFit training offered considerable advantages by reducing social physique anxiety and enhancing adolescents' body esteem and physical self-efficacy. The program stimulated improvements in body composition, cardiorespiratory fitness, muscle strength, and flexibility.

Preoperative gastric volume assessment using ultrasound in cerebral palsy pediatric patients: a prospective observational study

BackgroundAlthough cerebral palsy is a risk factor for aspiration, there is insufficient research on residual gastric volume after preoperative fasting in children with cerebral palsy. We evaluated the incidence of a full stomach by ultrasound assessment of the gastric volume in children with cerebral palsy who underwent orthopedic surgery after preoperative fasting. MethodsThe patients fasted for 8 h for solid foods and 2 h for clear liquids. We obtained the gastric antral cross-sectional area using ultrasound in the semi-recumbent and right lateral decubitus positions. A calculated stomach volume > 1.5 mL.kg−1 was considered as full, which poses a high aspiration risk. The primary outcome was the incidence of full stomach, and the secondary outcomes were the qualitative gastric volume, correlation of disease severity categorized according to the Gross Motor Function Classification System with the residual gastric volume, gastric volume per body weight, and qualitative gastric volume. ResultsThirty-seven pediatric patients with cerebral palsy, scheduled for elective orthopedic surgery, were included for analysis. Full-stomach status was observed in none, and the gastric volume per body weight was 0.5 (0.4–0.7) mL.kg−1. No significant differences were observed in the residual gastric volume (p = 0.114), gastric volume per body weight (p = 0.117), or qualitative grade of gastric volume (p = 0.642) in relation to disease severities. ConclusionChildren with cerebral palsy who fasted preoperatively had empty or nearly empty stomachs. Further studies are required to determine the optimal fasting duration for such children.