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Patients with chronic obstructive pulmonary disease (COPD) commonly exhibit muscle atrophy and dysfunction due to a reduction in muscle mass; and protein supplements such as chicken egg whites have been reported to improve muscle mass. The aim of this study was to evaluate the impact of physical exercise and egg white supplementation on the muscle mass of COPD patients. An experimental study was conducted among stable COPD patients at Universitas Sumatra Utara Hospital Medan, Indonesia, between August and October 2022. The patients were divided into two groups, control and interventional groups, with each patient subjected to a pre- and post-muscle mass assessment. All the patients performed respiratory endurance and upper extremity muscle strength training three times/week for a total of 12 weeks. In addition, the patients in the intervention group were also given egg white supplementation (10 eggs/day) during the period of intervention in addition to the physical training. The Wilcoxon and Mann-Whitney tests were performed to identify the significance of the difference between pre- and post-intervention and between the control and intervention groups, respectively. A total of 38 COPD patients were included in the study, 19 from each group. Our data suggested no significant difference in muscle mass of the patients in the control group before and after 12 weeks of physical exercise (pre-intervention 27.37±4.54% and post-intervention 27.68±4.5% with p =0.174). However, there was a significant muscle mass increment of patients in the intervention group upon 12 weeks of physical training and egg white supplementation (pre-intervention 27.18±4.15%, post-intervention 29.95±3.76%, p <0.001). A significant difference in muscle mass was observed between patients in the control and the intervention groups ( p =0.046) after the intervention. The study highlights that physical exercise in combination with egg white supplementation may serve as potential and effective non-pharmacological treatment for muscle mass restoration in COPD patients as compared to physical exercise alone., Competing Interests: All the authors declare that there are no conflicts of interest., (© 2024 by the authors.)

Coronary artery disease (CAD) remains a significant global health concern with considerable high morbidity and mortality and its development is influenced by various genetic and environmental factors. Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a vital regulator of low-density lipoprotein receptor (LDLR) metabolism, directly impacting serum cholesterol levels. However, its role in development of CAD is not fully understood. The aim of this study was to assess the association between the level of PCSK9 and coronary lesion severity in patients with CAD. A case-control study using consecutive sampling was conducted among CAD patients at H. Adam Malik General Hospital and Murni Teguh Memorial Hospital, Medan, Indonesia. A total of 200 CAD patients were divided into two groups based on the SYNTAX score: control (score ≤22, n=100) and case (score >22, n=100). Plasma PCSK9 levels were measured from venous blood using quantitative sandwich enzyme immunoassay. The Chi-squared test was used to analyze the data. Our data suggested that PCSK9 level was associated with coronary lesion severity ( p <0.001) of which high PCSK9 level was associated with severe coronary lesion. We also found that hypertension ( p <0.001), smoking ( p =0.072), diabetes ( p <0.001), dyslipidemia ( p <0.001), obesity ( p =0.023), and family history ( p =0.001) were associated with lesion severity. Using the receiver operating characteristic (ROC) curve analysis, the cut-off 70.35 ng/mL of PCSK9 had sensitivity 75% and specificity 78% to predict severe coronary lesion. This study highlights that PCSK9 level has moderate sensitivity and specificity to predict the coronary lesion severity among CAD patients., Competing Interests: The authors declare that there is no conflict of interest., (© 2023 The Author(s).)

The low treatment rate, low treatment success rate and high mortality rate of patients with pre-extensively drug-resistant tuberculosis (pre-XDR-TB) and extensively drug-resistant TB (XDR-TB) need serious attention. The aim of this study was to describe the profiles of patients with pre-XDR-TB and XDR-TB cases and to determine associated risk factors of their incidence in Indonesia. A retrospective case-control study was conducted at H. Adam Malik General Hospital in Medan, North Sumatra of which all sensitive-drug TB (SD-TB), pre-XDR-TB, and XDR-TB patients aged 18 years or older treated between October 2019 to June 2022 were included. Chi-squared test or Kruskal Wallis test and multiple logistic regression were used to determine the risk factors associated with pre-XDR-TB and XDR-TB incidence. A total 16 patients of case group (15 pre-XDR-TB and one XDR-TB) and 116 SD-TB patients (control group) were included in the final analysis. Out of total patients within case group, 62.5% were male, 43.8% aged between 56-65 years, 62.5% graduated from high school or equivalent, and 25% were unemployed. The majority of patients had no comorbid (62.5%), had history of anti-TB treatment (93.8%), and had secondary resistance (93.8%). Multivariate analysis indicated that age (OR: 10.01; 95%CI: 1.49- 66.91, p =0.018) and previous history of anti-TB treatment (OR: 216.25; 95%CI: 18.62- 2511.60, p <0.001) were significantly associated with incidence of pre-XDR-TB and XDR-TB. This study highlights that having previous history of anti-TB treatment and older age are the predictors of the incidence of pre-XDR-TB and XDR-TB., Competing Interests: The authors declare that there is no conflict of interest., (© 2023 The Author(s).)

Chronic obstructive pulmonary disease (COPD) is among top ten of the world's causes of death. The development of the "Paru Sehat" smartphone application is a positive initiative and might have the potential to improve the disease management of COPD, improve patient's quality of life, and reduce complications associated with COPD. However, its effectiveness in improving the knowledge of the COPD patients is unknown. The aim of this study was to determine the effectiveness of "Paru Sehat" in increasing knowledge on COPD and its non-pharmacological management in COPD patients. A quasi-experimental study with a one-group pretest-posttest was conducted among stable COPD patients at Prof. Chairuddin Panusunan Lubis Hospital, Medan, Indonesia. Bristol COPD knowledge questionnaire (BCKQ) was used to assess the knowledge scores of the patients before and after exposure to the "Paru Sehat" twice a week for four weeks. A dependent Student t-test was used to compare the knowledge scores between pre- and post-intervention for both knowledge domains (i.e., knowledge on the disease and non-pharmacological management). Student t-test or one-way ANOVA were used to determine the association between patients' characteristics and the knowledge scores within pre- and posttreatment. Our data indicated a significant improvement of the knowledge scores on disease between pre- and post-treatment (15.92±3.79 vs 19.56±3.68, p <0.001). The knowledge score on non-pharmacological management also increased significantly post-treatment (7.52±2.02) compared to pre-treatment (10.08±2.379), p <0.001. In addition, this study found that educational attainment was associated with the scores of both knowledge domains of which individuals with senior high school or higher education level had significantly improvement of knowledge scores. This study highlights that although "Paru Sehat" application could improve the knowledge on COPD and its non-pharmacological management, its effects are less effective among individuals with low educational attainment., Competing Interests: The authors declare that there is no conflict of interest., (© 2023 The Author(s).)

Coronavirus disease 2019 (COVID-19) has been identified for more than two years, yet studies assessing post-infection lung function are limited. Reports on lung function in COVID-19 patients indicate that patients have restrictive defects and small airway dysfunction that can persist and are not necessarily related to the severity of the disease. The aim of this study was to assess the incidence of small airway obstruction and its incidence-associated factors among COVID-19 survivors to better describe the long-term effects of COVID-19. A cross-sectional study was conducted among COVID-19 survivors who less than 50 years at Medan Adventist Hospital between 2020-2022. The data were collected through interview, direct assessment and respiratory examination. A total of 89 COVID-19 survivors were recruited of which the majority of them were female with a mean age of 32.6-year-old with the largest group was 19-30 years. The comorbidities found among the survivors were heart and thyroid disorders, with the most common symptom of post-COVID-19 was fatigue. Most of them had mild COVID-19. The mean forced mid-expiratory flow (FEF 25-75% ) was 96.3±20.22, with an incidence rate of small airway obstruction was 19.1%. Univariate and multivariate analyses indicated no significant association between age, gender, comorbidities, history of oxygenation during COVID-19 treatment, COVID-19 severity and the type of post COVID-19 syndrome symptoms with the incidence of small airway obstruction. In conclusion, among COVID-19 survivors who were less than 50 years old, those studied variables seems have less association with the incidence of small airway obstruction. Nevertheless, a further study with a bigger sample size is important to be conducted., Competing Interests: The authors declare that there is no conflict of interest., (© 2023 The Author(s).)

Traumatic brain injury (TBI) is a traumatic that often leads to death due to untreatable cerebral hypoxia, indicated by oxygen saturation of <90%. Cerebral hypoxia is rarely monitored and thereby often overlooked as a cause of mortality and monitoring oxygen saturation is an accurate method to detect the condition. Propofol, an anesthetic agent, is commonly used in the management of TBI; however, its effect on brain tissue and cerebral hypoxia in TBI cases is not well understood. The aim of this study was to evaluate the profile of oxygen saturation in TBI animal model after propofol administration. A laboratory experimental study was conducted, involving 18 male Rattus novergicus rats (aged 4-8 weeks with weight between 150-200 grams) divided into three different treatment groups (non-TBI, TBI without propofol, and TBI with propofol). Oxygen saturation was measured regularly from day 1 to day 8 using pulse oximetry. The oxygen saturation percentages were compared between the TBI rats with and without propofol administration using independent Student t-rest. The results revealed significant reductions of oxygen saturation levels of animals within propofol-treated TBI group compared to that of the untreated-TBI group ( p <0.05), with the average oxygen saturation ranging from 80.8%±6.96% vs 86.8%±5.48%. This finding suggests a reducing effect of propofol administration on oxygen saturation levels in rats with TBI and this potentially causes cerebral hypoxia., Competing Interests: All the authors declare that there are no conflicts of interest., (© 2023 The Author(s).)