The addition of functional coatings to packaging materials is a key requirement for increasing their performance and creating innovative packaging solutions. Flexography, a cost-effective printing method commonly used to print information and graphics directly onto a wide variety of packaging substrates, shows good potential for applying functional coatings. In this study, conventional clay-latex coating formulations containing approximately 1.3 wt% silica nanospheres were applied to a linerboard using a pilot scale flexographic printing web press. The performance of multilayered silica nanosphere-based coatings was compared with conventional coatings containing talc and/or wax dispersion in terms of coating grammage, runnability, and barrier performance. Coating grammage increased with an increased number of coating layers and a significant decrease in both the water vapor transmission rate (WVTR) and the direct water uptake of water (Cobb 120 wettability test) was observed for coatings containing silica nanoparticles. In general, the silica nanosphere-based coatings performed better than talc-based coatings. Talc/wax-based coatings had the highest variation in surface roughness due to an uneven distribution and variations of coating layers.
{"title":"Multilayering of conventional latex-based dispersion coatings containing small amounts of silica nanospheres: Runnability on a pilot scale flexographic coater and barrier performance","authors":"Beko Mesic, James H. Johnston","doi":"10.32964/tj22.11.675","DOIUrl":"https://doi.org/10.32964/tj22.11.675","url":null,"abstract":"The addition of functional coatings to packaging materials is a key requirement for increasing their performance and creating innovative packaging solutions. Flexography, a cost-effective printing method commonly used to print information and graphics directly onto a wide variety of packaging substrates, shows good potential for applying functional coatings. In this study, conventional clay-latex coating formulations containing approximately 1.3 wt% silica nanospheres were applied to a linerboard using a pilot scale flexographic printing web press. The performance of multilayered silica nanosphere-based coatings was compared with conventional coatings containing talc and/or wax dispersion in terms of coating grammage, runnability, and barrier performance. Coating grammage increased with an increased number of coating layers and a significant decrease in both the water vapor transmission rate (WVTR) and the direct water uptake of water (Cobb 120 wettability test) was observed for coatings containing silica nanoparticles. In general, the silica nanosphere-based coatings performed better than talc-based coatings. Talc/wax-based coatings had the highest variation in surface roughness due to an uneven distribution and variations of coating layers.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"20 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Did you know that TAPPI’s Coating and Graphic Arts Division has changed its name to Coating, Printing, and Surface Enhancement (CPSE) Division? This change occurred mid-year, as our members realized that the new name fits much better with the day-to-day workings of the Division, as well as the broader activities to functionalize and add value to paper and paperboard that continue to expand into new arenas.
{"title":"Editorial: Special coating issue contains highlighted works from TAPPICon 2023","authors":"Steven Ottone, Gregg Reed, Greg Welsch","doi":"10.32964/tj22.11.663","DOIUrl":"https://doi.org/10.32964/tj22.11.663","url":null,"abstract":"Did you know that TAPPI’s Coating and Graphic Arts Division has changed its name to Coating, Printing, and Surface Enhancement (CPSE) Division? This change occurred mid-year, as our members realized that the new name fits much better with the day-to-day workings of the Division, as well as the broader activities to functionalize and add value to paper and paperboard that continue to expand into new arenas.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"564 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139195275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Watti Lehtimäki, Andreas Schröder, Vesa Kukkamo, M. Toivakka
This study aimed to understand the effect of various rheological additives on the extensional viscosity of barrier coating dispersions, as well as to understand the role extensional viscosity plays in stabilizing a liquid curtain. The apparent extensional viscosity was measured using two devices that create accelerating flows: a capillary viscometer and an orifice rheometer. Additives tested include several polyvinyl alcohols, a high molecular weight polyethylene oxide, and carboxymethylcellulose. Extensional viscosity plays a significant role in stabilizing a liquid curtain, as it slows down hole expansion and prevents impurities and disturbances from causing holes in the first place. Some of the additives could substantially increase the extensional viscosity of the dispersions without increasing the shear viscosity outside the typical range of processability for a curtain coater. Some of the additives exhibited coil-stretch transition, meaning they start increasing extensional viscosity above a certain extension rate. Polymers with low chain lengths exhibited finite extensibility, which indicates the polymer chain has fully extended and cannot provide further extensional viscosity, even though the extending force is increased. Polymeric additives with stiff or branched chains significantly raised shear viscosity without increasing extensional viscosity. Both methods could reliably measure extensional viscosity in curtain coating barrier dispersions.
{"title":"Measurement and control of extensional viscosity in barrier coating dispersions","authors":"Watti Lehtimäki, Andreas Schröder, Vesa Kukkamo, M. Toivakka","doi":"10.32964/tj22.11.699","DOIUrl":"https://doi.org/10.32964/tj22.11.699","url":null,"abstract":"This study aimed to understand the effect of various rheological additives on the extensional viscosity of barrier coating dispersions, as well as to understand the role extensional viscosity plays in stabilizing a liquid curtain. The apparent extensional viscosity was measured using two devices that create accelerating flows: a capillary viscometer and an orifice rheometer. Additives tested include several polyvinyl alcohols, a high molecular weight polyethylene oxide, and carboxymethylcellulose. Extensional viscosity plays a significant role in stabilizing a liquid curtain, as it slows down hole expansion and prevents impurities and disturbances from causing holes in the first place. Some of the additives could substantially increase the extensional viscosity of the dispersions without increasing the shear viscosity outside the typical range of processability for a curtain coater. Some of the additives exhibited coil-stretch transition, meaning they start increasing extensional viscosity above a certain extension rate. Polymers with low chain lengths exhibited finite extensibility, which indicates the polymer chain has fully extended and cannot provide further extensional viscosity, even though the extending force is increased. Polymeric additives with stiff or branched chains significantly raised shear viscosity without increasing extensional viscosity. Both methods could reliably measure extensional viscosity in curtain coating barrier dispersions.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"85 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139195704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paper was pre-calendered in a pilot scale configuration with a traditional soft nip calender and a metal belt calender. All calendering strategies reduced surface roughness and permeability of the samples, but different strategies affected the surface roughness and permeability differently. The metal belt calender seemed to have a larger effect on the large-scale variations compared to the soft nip calender. Six test points from the pilot calendered papers were chosen for laboratory coating studies. Uncalendered paper was included as reference samples. The calendered samples and the reference were pre-coated with a regular pigmented coating consisting of a ground calcium carbonate (GCC) pigment and a styrene acrylate (SA) latex. Both uncoated and pre-coated substrates were barrier coated with a polyvinyl alcohol (PVOH) in one and two layers. The coating pickup was determined gravimetrically, and the barrier properties were evaluated with TAPPI Standard Test Method T 454 grease resistance test. All samples needed two PVOH coating layers to form a grease barrier. The uncalendered sheets showed the best results with one coating layer, but this was at the expense of a higher coating pickup compared to the calendered sheets. The barrier coating pickup could be reduced by a combination of high temperature metal belt calendering and pre-coating. The high temperature and long residence time in the nip enabled plasticization of the fibers. This led to an irreversible deformation, even after water application. This meant that the smoothness obtained during calendering would be less affected by water-induced roughening during the coating operation.
在试验规模的配置中，使用传统的软压区压光机和金属带压光机对纸张进行了预压光。所有压光方法都降低了样品的表面粗糙度和渗透性，但不同的压光方法对表面粗糙度和渗透性的影响不同。与软压区压光机相比，金属带压光机似乎对大规模变化的影响更大。从试验压光纸中选择了六个测试点进行实验室涂布研究。未压光的纸张被列为参考样本。压光纸样和参考纸样都预先涂上了由研磨碳酸钙（GCC）颜料和丙烯酸苯乙烯酯（SA）胶乳组成的普通颜料涂层。未涂覆和预涂覆的基底都涂有一层和两层聚乙烯醇 (PVOH) 阻隔涂层。涂层拾取量以重力法测定，阻隔性能则通过 TAPPI 标准测试方法 T 454 耐油脂性测试进行评估。所有样品都需要两层 PVOH 涂层才能形成油脂阻隔层。未压光的板材在使用一层涂层时效果最好，但与压光板材相比，这是以较高的涂层拾取率为代价的。通过结合使用高温金属带压延和预涂覆技术，可以降低阻隔涂层的附着率。压区的高温和较长的停留时间使纤维发生塑化。这导致了不可逆的变形，即使在加水后也是如此。这意味着在压延过程中获得的平滑度在涂覆过程中受水引起的粗糙度影响较小。
{"title":"Impact of different calendering strategies on barrier coating pickup","authors":"Peter Rättö, K. Junel, Dimitar Valtakari","doi":"10.32964/tj22.11.665","DOIUrl":"https://doi.org/10.32964/tj22.11.665","url":null,"abstract":"Paper was pre-calendered in a pilot scale configuration with a traditional soft nip calender and a metal belt calender. All calendering strategies reduced surface roughness and permeability of the samples, but different strategies affected the surface roughness and permeability differently. The metal belt calender seemed to have a larger effect on the large-scale variations compared to the soft nip calender. Six test points from the pilot calendered papers were chosen for laboratory coating studies. Uncalendered paper was included as reference samples. The calendered samples and the reference were pre-coated with a regular pigmented coating consisting of a ground calcium carbonate (GCC) pigment and a styrene acrylate (SA) latex. Both uncoated and pre-coated substrates were barrier coated with a polyvinyl alcohol (PVOH) in one and two layers. The coating pickup was determined gravimetrically, and the barrier properties were evaluated with TAPPI Standard Test Method T 454 grease resistance test. All samples needed two PVOH coating layers to form a grease barrier. The uncalendered sheets showed the best results with one coating layer, but this was at the expense of a higher coating pickup compared to the calendered sheets. The barrier coating pickup could be reduced by a combination of high temperature metal belt calendering and pre-coating. The high temperature and long residence time in the nip enabled plasticization of the fibers. This led to an irreversible deformation, even after water application. This meant that the smoothness obtained during calendering would be less affected by water-induced roughening during the coating operation.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139187782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Ventresca, Benjamin Benz, David Eisenhauer, G. Welsch, Dustin Burton
Functional coatings are applied to paper and paperboard substrates to provide resistance, or a barrier, against media such as oil and grease, water, water vapor, and oxygen, for applications such as food packaging, food service, and other non-food packaging. Today, there is increasing interest in developing recyclable and more sustainable approaches for producing these types of packages. This paper focuses on water-based barrier coatings (WBBC) for oil and grease resistance (OGR), water, moisture vapor transmission rate (MVTR), and oxygen barrier performance. The main goal is to create coated systems that can achieve more than one barrier property using multilayer curtain coating (MLCC) in a single application step. One advantage is in optimizing coating material cost with the use of functional chemistry in confined layers where performance is balanced within the coating layered structure. This allows simultaneous application of layers of different polymer types in one step to achieve the appropriate performance needs for a given barrier application. This paper provides working examples of using MLCC to create coating structures with multiple barrier properties in a single application pass. Barrier polymers studied include styrene butadiene, styrene acrylate, starch-containing emulsions, and polyvinyl alcohol. The paper also shows the effect of increasing the pigment volume concentration with platy clay or fine ground calcium carbonate on MVTR and OGR barrier properties.
{"title":"Multifunctional barrier coating systems created by multilayer curtain coating","authors":"D. Ventresca, Benjamin Benz, David Eisenhauer, G. Welsch, Dustin Burton","doi":"10.32964/tj22.11.706","DOIUrl":"https://doi.org/10.32964/tj22.11.706","url":null,"abstract":"Functional coatings are applied to paper and paperboard substrates to provide resistance, or a barrier, against media such as oil and grease, water, water vapor, and oxygen, for applications such as food packaging, food service, and other non-food packaging. Today, there is increasing interest in developing recyclable and more sustainable approaches for producing these types of packages. This paper focuses on water-based barrier coatings (WBBC) for oil and grease resistance (OGR), water, moisture vapor transmission rate (MVTR), and oxygen barrier performance. The main goal is to create coated systems that can achieve more than one barrier property using multilayer curtain coating (MLCC) in a single application step. One advantage is in optimizing coating material cost with the use of functional chemistry in confined layers where performance is balanced within the coating layered structure. This allows simultaneous application of layers of different polymer types in one step to achieve the appropriate performance needs for a given barrier application. This paper provides working examples of using MLCC to create coating structures with multiple barrier properties in a single application pass. Barrier polymers studied include styrene butadiene, styrene acrylate, starch-containing emulsions, and polyvinyl alcohol. The paper also shows the effect of increasing the pigment volume concentration with platy clay or fine ground calcium carbonate on MVTR and OGR barrier properties.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"136 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Preston, Andrew Findlay, Jonathan Keen, Eli Gaskin
Offset printing of coated paper involves the complex interactions of ink with a surface that is characterized by three major properties: roughness, porosity, and related pore network structure and surface chemistry (related to surface free energy [SFE]). The effects of porosity and roughness are relatively well understood and are documented in the literature, whereas the influence of surface chemistry is much less studied and therefore the focus of this paper. The key results shown include: i) Coating porosity has a negligible effect on SFE determination by contact angle using two fluids. ii) The chemistry of the latex polymer in the coating formulation dominates the influence on SFE compared to pigment, with any surface energy differences present in the pigment being almost completely masked by latex. iii) Wetting agent and corona treatment can impact water absorption rate and surface spreading of water, resulting in small differences in printability. Increasing the concentration of the surfactant on a coated surface indicates switching orientation of the surfactant molecules, giving a “step wise” printing result. When looking to improve offset printability by selection of different pigments, the variation in SFE is less important than variation in either surface roughness or porosity.
{"title":"Surface energy considerations for offset printing of coated paper and paperboard","authors":"J. Preston, Andrew Findlay, Jonathan Keen, Eli Gaskin","doi":"10.32964/tj22.11.724","DOIUrl":"https://doi.org/10.32964/tj22.11.724","url":null,"abstract":"Offset printing of coated paper involves the complex interactions of ink with a surface that is characterized by three major properties: roughness, porosity, and related pore network structure and surface chemistry (related to surface free energy [SFE]). The effects of porosity and roughness are relatively well understood and are documented in the literature, whereas the influence of surface chemistry is much less studied and therefore the focus of this paper. The key results shown include: i) Coating porosity has a negligible effect on SFE determination by contact angle using two fluids. ii) The chemistry of the latex polymer in the coating formulation dominates the influence on SFE compared to pigment, with any surface energy differences present in the pigment being almost completely masked by latex. iii) Wetting agent and corona treatment can impact water absorption rate and surface spreading of water, resulting in small differences in printability. Increasing the concentration of the surfactant on a coated surface indicates switching orientation of the surfactant molecules, giving a “step wise” printing result. When looking to improve offset printability by selection of different pigments, the variation in SFE is less important than variation in either surface roughness or porosity.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"25 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139191290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paper-based packaging with barrier effect, as opposed to single use plastics, is gaining more prominence for sustainability reasons. At the same time, latex- or biopolymer-based aqueous barrier coating dispersions are increasingly being adopted as a better alternative to the traditional barrier coating materials, such as wax, surface active chemicals, and polyethylene. In this work, studies were performed to determine the influence of different kaolin clays in latex binder-based aqueous coatings on barrier properties, namely, oil and grease, water resistance, and water vapor transmission rate, by applying coatings to solid bleached sulfate (SBS) paperboard substrate in the laboratory. The aim was to explore potential benefits of using kaolin clay to replace some of the latex binder in coating and improve or maintain various types of barrier performance and blocking without negatively influencing the other performance attributes, including heat seal. The delaminated clay with the highest shape factor provided improved barrier properties over the clays of low shape factor. The ultrafine and non-delaminated clays required significantly higher coat weights to reach satisfactory barrier properties. Coatings with different latex levels indicated that a considerably high proportion of coarse delaminated clay can be incorporated to replace latex binder, while still achieving exceptional barrier properties. Furthermore, a change in binder system was found to significantly alter the barrier properties and the role that a mineral pigment can play. The results indicate that a proper selection of binder systems for each barrier property would be required while considering the clay/latex coating systems.
{"title":"Use of kaolin clay in aqueous barrier coating applications","authors":"Siva Devisetti, Gus Lempsink, Prakash B. Malla","doi":"10.32964/tj22.11.685","DOIUrl":"https://doi.org/10.32964/tj22.11.685","url":null,"abstract":"Paper-based packaging with barrier effect, as opposed to single use plastics, is gaining more prominence for sustainability reasons. At the same time, latex- or biopolymer-based aqueous barrier coating dispersions are increasingly being adopted as a better alternative to the traditional barrier coating materials, such as wax, surface active chemicals, and polyethylene. In this work, studies were performed to determine the influence of different kaolin clays in latex binder-based aqueous coatings on barrier properties, namely, oil and grease, water resistance, and water vapor transmission rate, by applying coatings to solid bleached sulfate (SBS) paperboard substrate in the laboratory. The aim was to explore potential benefits of using kaolin clay to replace some of the latex binder in coating and improve or maintain various types of barrier performance and blocking without negatively influencing the other performance attributes, including heat seal. The delaminated clay with the highest shape factor provided improved barrier properties over the clays of low shape factor. The ultrafine and non-delaminated clays required significantly higher coat weights to reach satisfactory barrier properties. Coatings with different latex levels indicated that a considerably high proportion of coarse delaminated clay can be incorporated to replace latex binder, while still achieving exceptional barrier properties. Furthermore, a change in binder system was found to significantly alter the barrier properties and the role that a mineral pigment can play. The results indicate that a proper selection of binder systems for each barrier property would be required while considering the clay/latex coating systems.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"57 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139195726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Saidu, Khuan Lee, Iskasymar Ismail, A. Oyedunni, Poh Ying Lim
Introduction: The instructor-led CPR training method has been used for over 4 decades. However, nurses’ knowledge and skills are still low. Instructor-led CPR training is an extremely capital-intensive programme that requires more time, workforce, and space, thus serving as an impediment to effective learning among the prospective nurses’ trainees. Self-directed training method is suggested to improve the knowledge and skills of CPR among healthcare practitioners due to the low cost and flexibility. This study aims to evaluate the effectiveness of self-directed method in improving nurses’ knowledge and skill retention from baseline to post-test, one, three-, and six months. Method: A two-arm double-blinded randomised controlled trial will be conducted in two referral hospitals. The control group training consists of a one-day session taught by AHA-certified instructors, whereas the intervention group training entails participants learning on computers in a simulation lab for seven days. A generalised estimated equation model will be used for statistical analysis. Discussion: Through the self-directed training method, participants will have significantly better knowledge and skills of CPR compared to the conversational training method across the time points. Self-directed training method is a simple, cost-effective and flexible method, which can facilitate the training of more nurses in the acquisition and retention of knowledge and skills, especially for those who prefer to learn at their own pace. Trial Registration: Registration Code: UDUTH/NHREC/30/012/2019 and NHREC/28/01/2020/AKTH/EC/2934
{"title":"Effectiveness of Self-directed Virtual Learning on Retention of Cardiopulmonary Resuscitation Knowledge and Skills among Hospital Nurses in North-western Nigeria: Protocol Paper","authors":"A. Saidu, Khuan Lee, Iskasymar Ismail, A. Oyedunni, Poh Ying Lim","doi":"10.47836/mjmhs.19.6.42","DOIUrl":"https://doi.org/10.47836/mjmhs.19.6.42","url":null,"abstract":"Introduction: The instructor-led CPR training method has been used for over 4 decades. However, nurses’ knowledge and skills are still low. Instructor-led CPR training is an extremely capital-intensive programme that requires more time, workforce, and space, thus serving as an impediment to effective learning among the prospective nurses’ trainees. Self-directed training method is suggested to improve the knowledge and skills of CPR among healthcare practitioners due to the low cost and flexibility. This study aims to evaluate the effectiveness of self-directed method in improving nurses’ knowledge and skill retention from baseline to post-test, one, three-, and six months. Method: A two-arm double-blinded randomised controlled trial will be conducted in two referral hospitals. The control group training consists of a one-day session taught by AHA-certified instructors, whereas the intervention group training entails participants learning on computers in a simulation lab for seven days. A generalised estimated equation model will be used for statistical analysis. Discussion: Through the self-directed training method, participants will have significantly better knowledge and skills of CPR compared to the conversational training method across the time points. Self-directed training method is a simple, cost-effective and flexible method, which can facilitate the training of more nurses in the acquisition and retention of knowledge and skills, especially for those who prefer to learn at their own pace. Trial Registration: Registration Code: UDUTH/NHREC/30/012/2019 and NHREC/28/01/2020/AKTH/EC/2934","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"14 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139278048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nur Amirah Saulius, Nor Rosidah Ibrahim, M. I. Ilias, Fahisham Taib
Introduction: Auditing of paediatric deaths has rarely been evaluated in hospitals especially in low and middle-income countries. The aim of the study is to describe the characteristics of paediatric death in hospitalised children and determine the predictors of death location in Hospital Universiti Sains Malaysia (USM). Method: Paediatric mortality cases for children aged between 29 days and 18 years old at the time of death were analyzed. These were documented cases between the year 2013 and 2020 at Hospital USM. Case notes were reviewed, and data were captured retrospectively. Multiple Logistic Regression was used to assess predictors of the location of death especially in the ward setting.Results: Out of 841 paediatric deaths identified during the period of the study, 544 cases were enrolled. The male gender has a higher proportion (1.4:1). The median age was 56 months, with infancy being the predominant age group. The median length of hospital stay was 10.5 days. More than half of the cases (58.3%) had underlying life-limiting illnesses. The majority of the patients had “Do Not Resuscitate” orders. A longer length of stay (prevalence odds ratio (POR 0.99, 95% CI 0.98, 0.99), being on ventilator (POR 3.42,95% CI 1.95, 6.01), being terminally ill (POR 0.40,95% CI 0.23, 0.70) and having underlying life limiting illness (POR 0.50, 95% CI 0.33, 0.75) were the significant predictors for the ward death. Conclusion: Understanding the characteristics of child death and the factors associated with death location is critical for improving paediatric care and treatment.
导言：医院很少对儿科死亡进行审计评估，尤其是在中低收入国家。本研究旨在描述住院儿童中儿科死亡的特征，并确定马来西亚理科大学医院（USM）死亡地点的预测因素。研究方法对死亡时年龄在29天至18岁之间的儿科死亡病例进行分析。这些病例是马来西亚大学医院在 2013 年至 2020 年期间记录在案的病例。对病例记录进行了审查，并对数据进行了回顾性采集。采用多元逻辑回归评估死亡地点的预测因素，尤其是病房环境：在研究期间发现的 841 例儿科死亡病例中，有 544 例登记在案。男性比例较高（1.4:1）。年龄中位数为 56 个月，以婴儿为主。住院时间中位数为 10.5 天。超过一半的病例（58.3%）患有潜在的危及生命的疾病。大多数患者都下达了 "不要抢救 "的命令。住院时间较长（患病几率比（POR 0.99，95% CI 0.98，0.99））、使用呼吸机（POR 3.42，95% CI 1.95，6.01）、病入膏肓（POR 0.40，95% CI 0.23，0.70）和患有潜在的限制生命疾病（POR 0.50，95% CI 0.33，0.75）是病房死亡的重要预测因素。结论了解儿童死亡的特征以及与死亡地点相关的因素对于改善儿科护理和治疗至关重要。
{"title":"Characteristics of Paediatric Death Cases at a Malaysian University Hospital","authors":"Nur Amirah Saulius, Nor Rosidah Ibrahim, M. I. Ilias, Fahisham Taib","doi":"10.47836/mjmhs.19.6.27","DOIUrl":"https://doi.org/10.47836/mjmhs.19.6.27","url":null,"abstract":"Introduction: Auditing of paediatric deaths has rarely been evaluated in hospitals especially in low and middle-income countries. The aim of the study is to describe the characteristics of paediatric death in hospitalised children and determine the predictors of death location in Hospital Universiti Sains Malaysia (USM). Method: Paediatric mortality cases for children aged between 29 days and 18 years old at the time of death were analyzed. These were documented cases between the year 2013 and 2020 at Hospital USM. Case notes were reviewed, and data were captured retrospectively. Multiple Logistic Regression was used to assess predictors of the location of death especially in the ward setting.Results: Out of 841 paediatric deaths identified during the period of the study, 544 cases were enrolled. The male gender has a higher proportion (1.4:1). The median age was 56 months, with infancy being the predominant age group. The median length of hospital stay was 10.5 days. More than half of the cases (58.3%) had underlying life-limiting illnesses. The majority of the patients had “Do Not Resuscitate” orders. A longer length of stay (prevalence odds ratio (POR 0.99, 95% CI 0.98, 0.99), being on ventilator (POR 3.42,95% CI 1.95, 6.01), being terminally ill (POR 0.40,95% CI 0.23, 0.70) and having underlying life limiting illness (POR 0.50, 95% CI 0.33, 0.75) were the significant predictors for the ward death. Conclusion: Understanding the characteristics of child death and the factors associated with death location is critical for improving paediatric care and treatment.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"31 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139278182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Izzati Mohd Khairunjauhari, Nor Faezah Md Bohari, Nawwal Alwani Mohd Radzi, Ilham Wan Mokhtar
Introduction: Orang Asli refers to the indigenous people of Peninsular Malaysia, representing 0.6% of the Malaysian population. Vast inequality was observed regarding oral health beliefs, behaviour, and utilisation of oral health services between the Orang Asli and non-Orang Asli. The aim of the study was to explore the oral health beliefs, perceptions, and oral health service utilization behaviour among Orang Asli in the district of Bera, Pahang, Malaysia. Methods: Orang Asli’s oral health beliefs and perceptions of oral healthcare service were ascertained through four FGDs. Nineteen participants from Bera’s semi-urban and rural Orang Asli communities were convened. Emerging themes from the qualitative data were analyzed using thematic analysis. Results: Orang Asli believed that oral health is essential for an individual’s function and aesthetics. They are also aware that inadequate oral hygiene care will result in tooth decay and gum disease. Most of the Orang Asli that chewed betel nuts believed that limestone paste could cause oral cancer. The main barriers to Orang Asli accessing oral healthcare services were time constraints and distance to the nearby clinic. Conclusion: The Orang Asli believed oral health care is essential in ensuring a healthy oral condition. Despite their generational belief towards traditional healers and medication, Orang Asli in Bera had a perceived positive acceptance towards oral healthcare services.
{"title":"Oral Health Beliefs, Perceptions and Utilisation of Oral Health Care Services among the Indigenous People (Orang Asli) in Pahang, Malaysia: A Qualitative Study","authors":"Izzati Mohd Khairunjauhari, Nor Faezah Md Bohari, Nawwal Alwani Mohd Radzi, Ilham Wan Mokhtar","doi":"10.47836/mjmhs.19.6.4","DOIUrl":"https://doi.org/10.47836/mjmhs.19.6.4","url":null,"abstract":"Introduction: Orang Asli refers to the indigenous people of Peninsular Malaysia, representing 0.6% of the Malaysian population. Vast inequality was observed regarding oral health beliefs, behaviour, and utilisation of oral health services between the Orang Asli and non-Orang Asli. The aim of the study was to explore the oral health beliefs, perceptions, and oral health service utilization behaviour among Orang Asli in the district of Bera, Pahang, Malaysia. Methods: Orang Asli’s oral health beliefs and perceptions of oral healthcare service were ascertained through four FGDs. Nineteen participants from Bera’s semi-urban and rural Orang Asli communities were convened. Emerging themes from the qualitative data were analyzed using thematic analysis. Results: Orang Asli believed that oral health is essential for an individual’s function and aesthetics. They are also aware that inadequate oral hygiene care will result in tooth decay and gum disease. Most of the Orang Asli that chewed betel nuts believed that limestone paste could cause oral cancer. The main barriers to Orang Asli accessing oral healthcare services were time constraints and distance to the nearby clinic. Conclusion: The Orang Asli believed oral health care is essential in ensuring a healthy oral condition. Despite their generational belief towards traditional healers and medication, Orang Asli in Bera had a perceived positive acceptance towards oral healthcare services.","PeriodicalId":506570,"journal":{"name":"November 2023","volume":"73 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139278198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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