Displaying publications 21 - 40 of 67 in total

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  1. Fulltext Incidence, patterns and risk factors of injury & illness among athletes during the Malaysian Higher Education Games (SUKIPT) 2018
    Muhammad Harith, R., Mohamad Shariff, A.H.
    JUMMEC, 2019;22(2):13-23.
    MyJurnal
    Background: Despite regularly participating in international and national level multisport events, there is still
    limited data on the pattern of injuries and illnesses and factors associated with injuries and illnesses in Malaysia.
    Such information is crucial to instil preventive measures because sustaining injuries during competition could
    hamper the athlete’s performance.

    Methods: This cross-sectional study investigated the incidence, patterns and risk factors of injuries and illnesses
    among athletes throughout SUKIPT 2018, from the 2nd to the 10th of February 2018. All injuries and illnesses
    treated by tournament medical personnel were reported using a standardised online injury reporting form.
    This form was adapted from the injury surveillance form used by the International Olympic Committee.

    Results: A total of 6071 athletes from 80 contingents took part in SUKIPT 2018. During the nine days of
    competition 323 injuries and 48 illnesses were reported, resulting in an incidence of 5.3 injuries and 0.8 illness
    per 100 athletes. Approximately 6% of the athletes sustained at least one injury or illness.

    Conclusion: In summary, the incidence of injuries and illnesses among athletes during SUKIPT was 5.3 and
    0.8 per 100 athletes, respectively. Muscle strain/rupture/tear was the most common pattern of injury while
    collision with another athlete was the most frequent mechanism of injury. Meanwhile, the respiratory system
    was the most commonly affected by illness and infection was the most prevalent cause of illness.
    Matched MeSH terms: Respiratory System
  2. Fulltext Excision of tracheocutaneous fistula under local anaesthesia
    Irfan Mohamad, Yusri Musa, M.
    Archives of Orofacial Sciences, 2009;4(1):29-31.
    MyJurnal
    Tracheocutaneous fistula (TCF) is a known complication of tracheostomy. It can cause problems such as saliva leak, predispose to infection from external skin into respiratory tract and cosmetically not acceptable. Treatment of the underlying infection is paramount important. Persistence of tract after sufficient duration of observation period should be surgically treated. Cases reported in the literature are mainly regarding paediatric TCF and the procedures are usually done under general anesthesia. We describe a case of surgical treatment of an adult TCF which was done under local anaesthesia.
    Matched MeSH terms: Respiratory System
  3. Fulltext Revisiting asthma phenotype in children
    Fahisham Taib
    Malaysian Journal of Paediatrics and Child Health, 2011;17(1):0-0.
    MyJurnal
    Asthma is considered as heterogeneous multidimensional disorder due to variable phenotypic presentation. Phenotype is defined as a cluster of either clinical or pathologic features, which tends to be associated with the understanding the mechanisms of the disease. Asthma is typically characterized by airway inflammation, variable airway obstruction, bronchial hyper-reactivity, smooth muscle hypertrophy and apparent reversible airflow obstruction by bronchodilators. ‘Asthma syndrome’ is a term to describe complex pathophysiology of the condition which is not exclusive to allergen triggered episodes. Diagnosing childhood asthma is difficult, due to the similarity of symptoms and overlapping with other wheezing conditions. The precise mechanism for asthma exacerbation, for each individual phenotype is not fully understood. However, it is influenced by genetic interaction with variety of external environmental stimuli. The current understanding on asthma phenotypes were interpreted based on age of onset, associated triggers, clinical aspects, physiologic parameters and type of inflammation (Table 1). Due to the illdefined of the current phenotypic definition and disagreement among the respirologists, it is becoming a challenge to label specific phenotype with certainty. Accurate definition of each phenotype should therefore be helpful to provide better understanding of different mechanistic pathways and focusing on targeted therapy for individual phenotype. (Copied from article).
    Matched MeSH terms: Respiratory System
  4. Fulltext Smoker Desaturation during General Anaesthesia: A Case Report
    Hadi, M.A., Azrina, M.R., Zamzila, A., Ariff, O.
    International Medical Journal Malaysia, 2009;8(1):57-59.
    MyJurnal
    We report a case of sudden hypoxaemia after intubation in a patient who had smoked a few hours prior to a surgical procedure. The cause of his desaturation was not related to bronchial secretions, bronchospasm or obstruction of the upper airways but most likely due to reduced oxygen saturation in the body prior to surgery. We managed to secure the airway and prevent prolonged desaturation by instituting remedial measures. Our conclusion is that cessation of smoking is very important and need to be emphasized in all patients having surgery under general anaesthesia. This applies to emergency cases as well.
    Matched MeSH terms: Respiratory System
  5. Fulltext Recanalization of an occluded left pulmonary artery: A case report and review of the literature
    Elarabi AI, Leong MC, Alwi M
    Ann Pediatr Cardiol, 2017 6 2;10(2):203-205.
    PMID: 28566832 DOI: 10.4103/0974-2069.205157
    We report an 8-year-old male child with tetralogy of Fallot (TOF), who developed left pulmonary artery (LPA) atresia, following surgical repair of TOF and left pulmonary arterioplasty at the age of 6 years. He underwent successful radiofrequency recanalization and stenting of the LPA. The LPA exhibited satisfactory growth for 3 months, following recanalization and stenting.
    Matched MeSH terms: Respiratory System Abnormalities
  6. Fulltext Effects of a Lactobacilli Probiotic on Reducing Duration of URTI and Fever, and Use of URTI-Associated Medicine: A Re-Analysis of a Randomized, Placebo-Controlled Study
    Altadill T, Espadaler-Mazo J, Liong MT
    Microorganisms, 2021 Mar 04;9(3).
    PMID: 33806508 DOI: 10.3390/microorganisms9030528
    We previously reported on the effects of Lactoplantibacillus plantarum DR7 on reducing Upper Respiratory Tract Infections (URTI) symptoms' score and frequency in 109 adults upon a 12-week consumption at 109 colony-forming units (CFU)/day, but several limitations were detected in the publication. Thus, the present study re-analyzed some data with the aim to address some of these weaknesses, and presents new data on duration of URTI and consumption of URTI-associated medication, as compared to the placebo. Our re-analyses found probiotic administration significantly reduced the proportion of patient days of URTI and of fever (all p < 0.05). Recent history of URTI was a prevalent co-factor in affecting duration of URTI symptoms and fever, while other demographic and clinical factors had no influence. Exploratory analyses suggested probiotic had an earlier benefit in patients without a recent history of URTI compared to those with a recent history of URTI. Therefore, recent history of infections could have a modulatory effect on probiotic efficacy. Average number of months with reported use of URTI-related medication was 3.4-times lower in the probiotic group as compared to placebo (p = 0.016) during the intervention. Taken together, our present new data further support previous findings that DR7 probiotic had a beneficial effect on URTI.
    Matched MeSH terms: Respiratory System Abnormalities
  7. Fulltext Characteristics of photo-luminescent (PL) powder applied with polyester resin as glow-in-the-dark emergency signage
    Siti Khadijah Che Osm, Munikanan, Vikneswaran, Hapsa Husen, Zuliziana Suif, Maidiana Othman, Nordila Ahmad, et al.
    ZULFAQAR International Journal of Defence Science, Engineering & Technology, 2020;3(1):32-38.
    MyJurnal
    During a disaster, the rescuer must reach the disaster area within the fastest time with the help of navigation tools. However, there might be some obstacles during the night time that make the evacuation of the victims difficult especially due to the bad weather. Hence, an attempt to produce glow-in-the-dark emergency signage to ease the evacuation process and to enhance visibility during night time is necessary. In this present study, particular emphasis is given to investigate the characteristic of photo-luminescent (PL)powder applied with polyester resin as glow-in-the-dark emergency signage. Five samples of signage were fabricated with different percentage of PL powder, i.e. 20%, 40%. 60%, 80% and 100% and mixed with 150g polyester resin. Three types of luminance test were performed to check the workability of the samples. The tests are physical appearance, one-hours illuminance test and afterglow duration tests. The result showed that the maximum lux meter reading was recorded in Sample 5 with 6 lux luminosity and provided the longest glow duration of the sample before completely off after 12-hours. Results proved that the highest percentage of the PL powder content, the longer the afterglow duration will be achieved. It also noted that the polyester resin could be a good binder of PL powder for producing the glow-in-the-dark emergency signage.
    Matched MeSH terms: Respiratory System Abnormalities
  8. Fulltext The Performance of Flexible Tip Bougie™ in Intubating Simulated Difficult Airway Model
    Mahli N, Md Zain J, Mahdi SNM, Chih Nie Y, Chian Yong L, Shokri AFA, et al.
    Front Med (Lausanne), 2021;8:677626.
    PMID: 34026801 DOI: 10.3389/fmed.2021.677626
    This prospective, randomized, cross-over study compared the performance of the novel Flexible Tip Bougie™ (FTB) with a conventional bougie as an intubation aid in a simulated difficult airway manikin model among anaesthesiology trainees with regards of first pass success rate, time to intubation, number of attempts and ease of use. Sixty-two anesthesiology trainees, novice to the usage of FTB, participated in this study. Following a video demonstration, each participant performed endotracheal intubation on a manikin standardized to a difficult airway view. Each participant performed direct laryngoscopy and intubated the manikin using a conventional bougie and FTB, at least 1 day in between devices, in a randomized order. The first pass success rate was significantly higher with FTB (98.4%) compared to conventional bougie (85.5%), p = 0.008. The median time to intubation was significantly faster when using FTB, median = 32.0 s [Interquartile range (IQR): 23.8-41.3 s] compared to when using conventional bougie, median = 41.5 s (IQR: 31.8-69.5 s), p < 0.001. The FTB required significantly less intubation attempts compared to conventional bougie, p = 0.024. The overall ease of use, scored on a Likert scale from 1 to 5, was significantly higher in the FTB (4.26 ± 0.53) compared to the conventional bougie (3.19 ± 0.83), p < 0.001. This simulated difficult airway manikin study finding suggested that FTB is a useful adjunct for difficult airway intubation. The FTB offered a higher first pass success rate with a faster time to intubation and less required attempts.
    Matched MeSH terms: Respiratory System
  9. Fulltext Role of Biomaterials in the Development of Epithelial Support in 3D In Vitro Airway Epithelium Development: A Systematic Review
    Nashihah AK, Muhammad Firdaus FI, Fauzi MB, Mobarak NN, Lokanathan Y
    Int J Mol Sci, 2023 Oct 05;24(19).
    PMID: 37834382 DOI: 10.3390/ijms241914935
    Respiratory diseases have a major impact on global health. The airway epithelium, which acts as a frontline defence, is one of the most common targets for inhaled allergens, irritants, or micro-organisms to enter the respiratory system. In the tissue engineering field, biomaterials play a crucial role. Due to the continuing high impact of respiratory diseases on society and the emergence of new respiratory viruses, in vitro airway epithelial models with high microphysiological similarities that are also easily adjustable to replicate disease models are urgently needed to better understand those diseases. Thus, the development of biomaterial scaffolds for the airway epithelium is important due to their function as a cell-support device in which cells are seeded in vitro and then are encouraged to lay down a matrix to form the foundations of a tissue for transplantation. Studies conducted in in vitro models are necessary because they accelerate the development of new treatments. Moreover, in comparatively controlled conditions, in vitro models allow for the stimulation of complex interactions between cells, scaffolds, and growth factors. Based on recent studies, the biomaterial scaffolds that have been tested in in vitro models appear to be viable options for repairing the airway epithelium and avoiding any complications. This review discusses the role of biomaterial scaffolds in in vitro airway epithelium models. The effects of scaffold, physicochemical, and mechanical properties in recent studies were also discussed.
    Matched MeSH terms: Respiratory System
  10. Drowning
    Sarvesvaran R
    Malays J Pathol, 1992 Dec;14(2):77-83.
    PMID: 1304628
    A body recovered from the water does not necessarily imply that death was due to drowning. The diagnosis of drowning is discussed together with the significance of the "diatom" and biochemical tests.
    Matched MeSH terms: Respiratory System/pathology*
  11. Respiratory epithelium, production performance and behaviour of formaldehyde-exposed broiler chicks
    Zulkifli I, Fauziah O, Omar AR, Shaipullizan S, Siti Selina AH
    Vet Res Commun, 1999 Mar;23(2):91-9.
    PMID: 10359153
    Two experiments were conducted to evaluate the effect of formaldehyde vaporization of a hatcher on the tracheal epithelium of chick embryos, and on the production performance and behaviour of commercial broiler chicks. In experiment 1, chick embryos were exposed to 23.5 ppm of formaldehyde vapour during the last 3 days of incubation. Tracheal samples were taken at 0, 6, 30 and 54 h after exposure to formaldehyde and examined by scanning electron microscopy for pathological changes. Observable lesions included excessive accumulation of mucus, matted cilia, loss of cilia and sloughing of the epithelium. The lesions were more severe in chicks exposed for 54 h as compared to those exposed for 6 or 30 h. In experiment 2, 60 chicks that had been exposed to formaldehyde vapour as above and 60 control chicks were used to investigate the effect of formaldehyde fumigation on production performance and behaviour. Formaldehyde vaporization resulted in higher weekly (days 0-6 and 21-27) and total (days 0-41) feed intake and poorer weekly (days 0-6, 7-13, 21-27 and 28-34) and overall (days 0-41) feed conversion ratios. Body weight, mortality and behaviour (eating, drinking, sitting and standing activities) were not affected by formaldehyde fumigation.
    Matched MeSH terms: Respiratory System/drug effects*
  12. Comparative analysis of realistic CT-scan and simplified human airway models in airflow simulation
    Johari NH, Osman K, Helmi NH, Abdul Kadir MA
    Comput Methods Biomech Biomed Engin, 2015;18(1):48-56.
    PMID: 23521065 DOI: 10.1080/10255842.2013.776548
    Efforts to model the human upper respiratory system have undergone many phases. Geometrical proximity to the realistic shape has been the subject of many research projects. In this study, three different geometries of the trachea and main bronchus were modelled, which were reconstructed from computed tomography (CT) scan images. The geometrical variations were named realistic, simplified and oversimplified. Realistic refers to the lifelike image taken from digital imaging and communications in medicine format CT scan images, simplified refers to the reconstructed image based on natural images without realistic details pertaining to the rough surfaces, and oversimplified describes the straight wall geometry of the airway. The characteristics of steady state flows with different flow rates were investigated, simulating three varied physical activities and passing through each model. The results agree with previous studies where simplified models are sufficient for providing comparable results for airflow in human airways. This work further suggests that, under most exercise conditions, the idealised oversimplified model is not favourable for simulating either airflow regimes or airflow with particle depositions. However, in terms of immediate analysis for the prediction of abnormalities of various dimensions of human airways, the oversimplified techniques may be used.
    Matched MeSH terms: Respiratory System/radiography*
  13. The presence of Nipah virus in respiratory secretions and urine of patients during an outbreak of Nipah virus encephalitis in Malaysia
    Chua KB, Lam SK, Goh KJ, Hooi PS, Ksiazek TG, Kamarulzaman A, et al.
    J Infect, 2001 Jan;42(1):40-3.
    PMID: 11243752
    To study the excretion of Nipah virus in the upper respiratory secretions and urine of infected patients in relation to other clinical features.
    Matched MeSH terms: Respiratory System/secretion; Respiratory System/virology*
  14. Cellular and humoral responses in the respiratory tract of goats following intranasal stimulation using formalin-killed Pasteurella haemolytica A2
    Zamri-Saad M, Effendy AW, Israf DA, Azmi ML
    Vet Microbiol, 1999 Mar 12;65(3):233-40.
    PMID: 10189198
    A study to determine the immunoglobulin and cellular responses in the respiratory tract of goats following intranasal exposures to formalin-killed Pasteurella haemolytica A2 was carried out. Forty-two goats were divided into two groups. Goats in Group 1 were subjected to double intranasal exposures to formalin-killed P. haemolytica A2 while goats in Group 2 were the unexposed control. Prior to and at weekly intervals post-exposure, three goats from each group were killed, serum samples were collected while the lungs were flushed with 50 ml normal saline before the right apical lobes were fixed in 10% buffered formalin. Both serum and lung lavage fluid were subjected to enzyme-linked immunosorbent assay (ELISA) to determine the levels of IgA, IgM and IgG while the formalin-fixed tissues were examined histologically. IgA levels in the lung lavage fluid increased rapidly to reach a significantly (p < 0.05) high level as early as Week 2 post-exposure and remained significantly (p < 0.05) high throughout the study period. The IgM levels increased at an intermediate rate to reach a significantly (p < 0.05) high level at Week 3 post-exposure before they decreased to an insignificant (p > 0.05) level the following week and the weeks thereafter. IgG levels increased gradually and only reached a significantly (p < 0.01) high level at Weeks 5 and 6 of the study. The size of the bronchus-associated lymphoid tissue (BALT) and the number of lymphocytes in BALT increased significantly from Week 2 and remained high thereafter. However, differences in the numbers of BALT were insignificant (p > 0.05) initially before becoming significantly (p < 0.05) high at Weeks 5 and 6. The BALT responses were parallel to those of imunoglobulins in the lung lavage fluid.
    Matched MeSH terms: Respiratory System/immunology*; Respiratory System/microbiology
  15. Fulltext Cytomegalovirus infection associated with Atypical Bronchopulmonary Dysplasia in a Preterm Neonate: a case report
    Aisha Fadhilah Abang Abdullah, Zurina Zainudin, Dg. Zuraini Sahadan
    Malaysian Journal of Medicine and Health Sciences, 2018;14(2):97-99.
    MyJurnal
    Cytomegalovirus (CMV) is frequently isolated from neonates. Symptomatic infection is only apparent in 10% of affected babies with particular predilection for the reticuloendothelial and central nervous system. Isolated respiratory system involvement is rarely encountered. We report a case of a premature 32 weeks infant who required prolonged oxygen dependency and treated for bronchopulmonary dysplasia. The diagnosis of CMV pneumonitis was only discovered after detection of CMV DNA in the bronchoalveolar lavage. A high level of clinical awareness is crucial as a definite diagnosis and treatment will significantly alter the morbidity and the cost of therapy.
    Matched MeSH terms: Respiratory System
  16. Development and validation of a Chinese translated questionnaire: A single simultaneous tool for assessing gastrointestinal and upper respiratory tract related illnesses in pre-school children
    Lau ASY, Yusoff MSB, Lee YY, Choi SB, Xiao JZ, Liong MT
    J Taibah Univ Med Sci, 2018 Apr;13(2):135-141.
    PMID: 31435316 DOI: 10.1016/j.jtumed.2017.11.003
    Objectives: Children are prone to contagious illnesses that come from peers in nurseries, kindergartens, and day care centres. The administration of probiotics has been reported to decrease the episodes of such illnesses, leading to decreased absences and consumption of antibiotics. With less emphasis on, and preferences for, blood collection from young subjects, quantifiable data are merely obtained from surveys and questionnaires. Malaysia has a population which is 25% ethnic Chinese. We aimed to develop a single tool that enables simultaneous assessments of both gastrointestinal and respiratory tract-related illnesses among young Chinese children.

    Methods: The English-language validated questionnaires using data about demographics and monthly health records were translated into the Chinese language. Both forward and backward translated versions were validated.

    Results: The developed demographic and monthly health questionnaires showed an overall item-level content validity index (I-CVI) of 0.99 and 0.97, respectively; while the translated Chinese versions showed I-CVI of 0.97 and 0.98, respectively. Item-level of response process validity index of 1.00 for this questionnaire was obtained from 30 respondents inferring that the items were clear and comprehensible.

    Conclusions: This study showed acceptable levels validity in the Chinese translated version, illustrating a valid and reliable tool to be used for simultaneous assessment of gastrointestinal and respiratory tract-related illnesses in young children that is applicable for Malaysia's Chinese population and other Chinese-speaking nations.

    Matched MeSH terms: Respiratory System
  17. Fulltext A review on development of blood substitute
    Mislia Othman, Muhammad Azrul Zabidi
    Jurnal Sains Kesihatan Malaysia, 2020;18(2):59-71.
    MyJurnal
    This review paper aims to present an overview of the development of blood substitute particularly red blood cell substitute or artificial oxygen carrier. Knowledge on human blood inspired from the understanding of human blood circulation system. Ibn Nafis was first to describe that blood flow through respiratory system before entering the heart. This finding denied the claim that tiny pores present within the septum of the heart. Then, William Harvey further described human cardiovascular system in detail and contributed to better understanding on the roles of blood in body. Several blood transfusions were attempted using blood collected from human, animal and other blood substitutes such as milk before the practice was banned for almost 150 years in Europe. Major discoveries on blood group and antibody reaction have made blood transfusion safer. However, several issues and challenges have re-triggered the exploration to develop red cell substitutes. Two approaches have been taken to develop the red blood cell substitute which are classified into biological and chemical based oxygen carriers. The earliest efforts have been on haemoglobin based oxygen carrier (HBOC) and perfluorocarbon (PFC) while the recent developement are on polymer-based oxygen carrier and in-vitro stem cell derived red blood cell.
    Matched MeSH terms: Respiratory System
  18. Fulltext Investigation of the natural supplement IQP-AS-119 for the prevention of upper respiratory tract infections in marathon race participants: A randomized, double-blind, placebo-controlled pilot study
    Bongartz U, Hochmann U, Pohl U, Bothe G, Costa P, Chong PW, et al.
    Exp Ther Med, 2021 Feb;21(2):144.
    PMID: 33456511 DOI: 10.3892/etm.2020.9575
    Intense and prolonged exercise leads to immune suppression, causing upper respiratory tract infections (URTI). A proprietary standardized dietary supplement, IQP-AS-119 has been previously developed to aid immune responses under such conditions. The current randomized, double-blind, placebo-controlled pilot study aimed to investigate the effects of IQP-AS-119 on marathon runners. A total of 80 participants were randomized equally into groups receiving either placebo (P group) or IQP-AS-119 (V group) treatment, starting 3 weeks before and for 14 days after the marathon. Benefit assessment was performed using different questionnaires. Post-marathon, the V and P groups reported 1±2.38 and 2.11±3.25 days with upper respiratory tract symptoms (URTS), respectively (P=0.038). During the 14 days post-marathon, 20.0% of the participants in the V group compared with 44.4% in the P group reported URTS (P=0.042). The V group reported significantly milder URTS compared with the P group on Days 9, 12, 13 and 14 post-marathon (P<0.05). The total Perceived Stress Questionnaire-20 score on days 2-14 were significantly lower for the V group compared with the P group (P=0.035). In the Short Form 12 Health Survey, the V group exhibited significant improvement in mental composite score on days -5 to 14 compared with the P group (P=0.038). In the overall treatment effect assessment, there were no statistically significant differences between the groups. The IQP-AS-119 was rated 'very good' or 'good' by investigators and participants, respectively, for 71 and 65% of the participants. The tolerability of IQP-AS-119 was rated as 'very good' or 'good' by both investigators and 95% of participants. No clinically relevant differences were observed between groups regarding adverse events or other safety parameters. Therefore, IQP-AS-119 was demonstrated to reduce the incidence and severity of URTI in marathon runners. Given its good tolerability profile, IQP-AS-119 may be a good nutritional supplement for the reduction of URTS in susceptible individuals.
    Matched MeSH terms: Respiratory System
  19. Fulltext The molecular genetics and pathogenesis of cystic fibrosis lung disease
    Abdullah, S.
    Buletin Persatuan Genetik Malaysia, 2006;12(1):10-17.
    MyJurnal
    Cystic Fibrosis (CF) is a life-threatening inherited disease that particularly affects the airways and digestive systems, which is caused by mutations in the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene. CF is considered as the most common autosomal recessive disorder in the Caucasian population. However, the prevalence of this disease amongst Asians is considered to be low, hence the lack of awareness of this disease amongst geneticists and physicians in Malaysia. This review will describe the features of CF, its molecular genetics, the current classification of CFTR mutation classes, the genotype-phenotype correlations, the effects of modifier genes, and the discourse of the disease pathogenesis, in the hope of raising public awareness of the condition and ultimately to improve the clinical and social care of those affected by CF in Malaysia.
    Matched MeSH terms: Respiratory System
  20. Causes of chronic oxygen dependency in new borns in a tertiary level neonatal unit
    Jacqueline, H.O.
    Malaysian Journal of Child Health, 1992;4(1):20-22.
    MyJurnal
    A retrospective survey was carried out in a neonatal unit to identify babies who required oxygen for more than the first 28 days of life and to determine the cause of their oxygen dependency. A total of 9173 neonates were admitted over a three year period. Approximately 750 were ventilated. Fifteen required oxygen for more than the first 28 days. Ten (67%) of these were due to bronchopulmonary dysplasia. 2 had upper airway complications of mechanical ventilation, one had recurrent apnoea, one had recurrent pneumonia, and one who did not require ventilation had chronic oxygen dependency of unknown cause. Bronchopulmonary dysplasia was the commonest cause of chronic oxygen dependency. The incidence was 1.5% of ventilated babies.
    Matched MeSH terms: Respiratory System
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