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  1. Hossain MS, Santhanam A, Nik Norulaini NA, Omar AK
    Waste Manag, 2011 Apr;31(4):754-66.
    PMID: 21186116 DOI: 10.1016/j.wasman.2010.11.008
    The management of clinical solid waste (CSW) continues to be a major challenge, particularly, in most healthcare facilities of the developing world. Poor conduct and inappropriate disposal methods exercised during handling and disposal of CSW is increasing significant health hazards and environmental pollution due to the infectious nature of the waste. This article summarises a literature review into existing CSW management practices in the healthcare centers. The information gathered in this paper has been derived from the desk study of open literature survey. Numerous researches have been conducted on the management of CSW. Although, significant steps have been taken on matters related to safe handling and disposal of the clinical waste, but improper management practice is evident from the point of initial collection to the final disposal. In most cases, the main reasons of the mismanagement of CSW are the lack of appropriate legislation, lack of specialized clinical staffs, lack of awareness and effective control. Furthermore, most of the healthcare centers of the developing world have faced financial difficulties and therefore looking for cost effective disposal methods of clinical waste. This paper emphasizes to continue the recycle-reuse program of CSW materials after sterilization by using supercritical fluid carbon dioxide (SF-CO2) sterilization technology at the point of initial collection. Emphasis is on the priority to inactivate the infectious micro-organisms in CSW. In that case, waste would not pose any threat to healthcare workers. The recycling-reuse program would be carried out successfully with the non-specialized clinical staffs. Therefore, the adoption of SF-CO2 sterilization technology in management of clinical solid waste can reduce exposure to infectious waste, decrease labor, lower costs, and yield better compliance with regulatory. Thus healthcare facilities can both save money and provide a safe environment for patients, healthcare staffs and clinical staffs.
    Matched MeSH terms: Medical Waste Disposal/economics; Medical Waste Disposal/legislation & jurisprudence; Medical Waste Disposal/methods*
  2. Bai VR, Vanitha G, Zainal Ariff AR
    Infect Control Hosp Epidemiol, 2013 Nov;34(11):1234-5.
    PMID: 24113615 DOI: 10.1086/673461
    Matched MeSH terms: Medical Waste Disposal/economics*
  3. Idris A, Saed K
    J Hazard Mater, 2002 Jul 22;93(2):201-8.
    PMID: 12117466
    Ash produced from a hospital waste incinerator was treated using a high temperature melting process at 1200 degrees C. The quality of the produced slag was characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), leaching tests and sequential chemical extraction of metals. The slag contained large amounts of SiO(2,) CaO, Al(2)O(3), Sn, Ni, Cu, Ba and B. XRD analysis revealed a moderate crystal structure for the melted slag and identified the main crystals as quartz (SiO(2)), kaolinite (Al(2)Si(2)O(5)(OH)(4)), albite (NaAlSi(3)O(8)) and gibbsite (Al(OH)(3)). The observed crystal structure assists in preventing the leaching of heavy metals from the slag. Furthermore, the leaching results found the produced slag to comply with disposal limits set by the US EPA. Results from sequential chemical extraction analysis showed that metals in the slag exhibited the strongest preference to be bound to the residual fraction (stable fraction), which is known to have very low leaching characteristics. Melting was found to stabilize heavy metals in hospital waste successfully and therefore it can be an acceptable method for disposal.
    Matched MeSH terms: Medical Waste Disposal*
  4. Ang TN, Young BR, Taylor M, Burrell R, Aroua MK, Baroutian S
    Chemosphere, 2020 Jan;239:124839.
    PMID: 31726519 DOI: 10.1016/j.chemosphere.2019.124839
    The inhalational anaesthetic agent - sevoflurane is widely employed for the induction and maintenance of surgical anaesthesia. Sevoflurane possesses a high global warming potential that imposes negative impact to the environment. The only way to resolve the issue is to remove sevoflurane from the medical waste gas before it reaches the atmosphere. A continuous adsorption study with a fixed-bed column was conducted using two commercial granular activated carbons (E-GAC and H-GAC), to selectively remove sevoflurane. The effect of bed depth (Z, 5-15 cm), gas flow rate (Q, 0.5-6.0 L/min) and inlet sevoflurane concentration (C0, ∼55-700 mg/L) was investigated. E-GAC demonstrated ∼60% higher adsorption capacity than H-GAC under the same operating conditions. Varying the levels of Z, Q and C0 showed significant differences in the adsorption capacities of E-GAC, whereas only changing the C0 level had significant differences for H-GAC. Three breakthrough models (Adams-Bohart, Thomas, and Yoon-Nelson) and Bed-depth/service time (BDST) analysis were applied to predict the breakthrough characteristics of the adsorption tests and determine the characteristic parameters of the column. The Yoon-Nelson and Thomas model-predicted breakthrough curves were in good agreement with the experimental values. In the case of the Adams-Bohart model, a low correlation was observed. The predicted breakthrough time (tb) based on kinetic constant (kBDST) in BDST analysis showed satisfactory agreement with the measured values. The results suggest the possibility of designing, scaling up and optimising an adsorption system for removing sevoflurane with the aid of the models and BDST analysis.
    Matched MeSH terms: Medical Waste Disposal/methods*
  5. Leddin D, Omary MB, Veitch A, Metz G, Amrani N, Aabakken L, et al.
    Gastroenterology, 2021 11;161(5):1354-1360.
    PMID: 34629165 DOI: 10.1053/j.gastro.2021.08.001
    Matched MeSH terms: Medical Waste Disposal*
  6. Nosheen F, Malik N, Mehmood Z, Jabeen F, Mahmood A, Ibrahim M, et al.
    Environ Res, 2022 Dec;215(Pt 2):114240.
    PMID: 36103930 DOI: 10.1016/j.envres.2022.114240
    Biomedical waste from healthcare activities poses a higher hazard of infection and damage than other types of trash. The main objective of the study was to assess the awareness knowledge and practices of biomedical waste management (BMWM) among health care professionals in the health care units. The cross-sectional study was carried out to access the awareness, knowledge and practices of health care professionals for BMWM. Using a qualitative approach, the study was escorted in two Apex hospitals i.e. the Allied Hospital and the District Head Quarter Hospital, Faisalabad, Pakistan from August 5, 2019 to October 15, 2019. More than 90% of respondents knew the phrase BMWM, but just 35.4% had awareness about biomedical waste regulations. About 71.6% of the respondents were familiar with biomedical waste's color-coding segregation. The study concludes gap in the awareness, knowledge and practices for BMWM. The sanitary workers of the hospitals had no knowledge about BMWM and the BMWM/healthcare waste management rule 2005 established in Pakistan due to the lack of training regarding waste management and the segregation process. Some of the staff members were aware of the BMWM practices under the rules and regulations of Pakistan but were unable to implement at their work place. It is necessary to dispose of the biomedical waste according to the established terms and conditions of BMWM rules (2005) of Pakistan. Weak structure of BMWM was observed at the study sites due to the lack of training, liabilities and absence of penalties against improper biomedical waste disposal as violation of the rules and regulations. It's a dire need of the time to consider the biomedical waste as hazardous waste and make policies for its safe disposal and ensure the implementation of the policies in all the medical centers of Pakistan.
    Matched MeSH terms: Medical Waste Disposal*
  7. Hantoko D, Li X, Pariatamby A, Yoshikawa K, Horttanainen M, Yan M
    J Environ Manage, 2021 May 15;286:112140.
    PMID: 33652254 DOI: 10.1016/j.jenvman.2021.112140
    The COVID-19 pandemic has imposed a global emergency and also has raised issues with waste management practices. This study emphasized the challenges of increased waste disposal during the COVID-19 crisis and its response practices. Data obtained from the scientific research papers, publications from the governments and multilateral organizations, and media reports were used to quantify the effect of the pandemic towards waste generation. A huge increase in the amount of used personal protective equipments (facemasks, gloves, and other protective stuffs) and wide distribution of infectious wastes from hospitals, health care facilities, and quarantined households was found. The amount of food and plastic waste also increased during the pandemic. These factors caused waste treatment facilities to be overwhelmed, forcing emergency treatment and disposals (e.g., co-disposal in a municipal solid waste incinerator, cement kilns, industrial furnaces, and deep burial) to ramp up processing capacity. This paper discussed the ways the operation of those facilities must be improved to cope with the challenge of handling medical waste, as well as working around the restrictions imposed due to COVID-19. The study also highlights the need for short, mid, and longer-term responses towards waste management during the pandemic. Furthermore, the practices discussed in this paper may provide an option for alternative approaches and development of sustainable strategies for mitigating similar pandemics in the future.
    Matched MeSH terms: Medical Waste Disposal*
  8. Hossain MS, Nik Ab Rahman NN, Balakrishnan V, Alkarkhi AF, Ahmad Rajion Z, Ab Kadir MO
    Waste Manag, 2015 Apr;38:462-73.
    PMID: 25636860 DOI: 10.1016/j.wasman.2015.01.003
    Clinical solid waste (CSW) poses a challenge to health care facilities because of the presence of pathogenic microorganisms, leading to concerns in the effective sterilization of the CSW for safe handling and elimination of infectious disease transmission. In the present study, supercritical carbon dioxide (SC-CO2) was applied to inactivate gram-positive Staphylococcus aureus, Enterococcus faecalis, Bacillus subtilis, and gram-negative Escherichia coli in CSW. The effects of SC-CO2 sterilization parameters such as pressure, temperature, and time were investigated and optimized by response surface methodology (RSM). Results showed that the data were adequately fitted into the second-order polynomial model. The linear quadratic terms and interaction between pressure and temperature had significant effects on the inactivation of S. aureus, E. coli, E. faecalis, and B. subtilis in CSW. Optimum conditions for the complete inactivation of bacteria within the experimental range of the studied variables were 20 MPa, 60 °C, and 60 min. The SC-CO2-treated bacterial cells, observed under a scanning electron microscope, showed morphological changes, including cell breakage and dislodged cell walls, which could have caused the inactivation. This espouses the inference that SC-CO2 exerts strong inactivating effects on the bacteria present in CSW, and has the potential to be used in CSW management for the safe handling and recycling-reuse of CSW materials.
    Matched MeSH terms: Medical Waste Disposal/methods*
  9. Lim MT
    MyJurnal
    There is a growing concern of unintended consequences of inappropriate medications disposal on the environment and public health. Objective: The aims of this study are to determine patients’ medications disposal methods and their awareness of the pharmacy medications take back program.
    Method: A cross sectional survey using a self-administered closed-ended questionnaire on information, medications disposal and views, awareness of medications take back program and reasons for their unwillingness to return the unused and unwanted medication to pharmacy or doctor. A convenient sample of 438 patients at Out Patient Pharmacy and Patient Registration areas in the hospital was collected and completed within three months.
    Results: Only 44.5% had ever received information about medications disposal and were significantly more likely to return to pharmacy or doctor (29.2% versus 6.0%, p < 0.001). There were significant differences between tertiary and nontertiary with regard to not returning to pharmacy or doctor (22.8% versus 42.0 %, p = 0.004). Some common medications disposal methods were throwing medications away with household garbage, 38.3% (n = 168), returning to pharmacy or doctor, 35.1% (n = 154) and flushing medications down the toilet or sink 11.0% (n = 48). About 50.2% (n = 220) knew about medications take back program and were significantly more willing to return the medication to the assigned location (34.7 % versus 20.1%, p < 0.001). The main reasons for unwillingness were availability of time, not convenient or a bother and out-of-vicinity location.
    Conclusion: There is a clear need to create public awareness about issues on safe medication disposal and medications take back program,
    Study site: Outpatient pharmacy, and patient registration area in Sultanah Aminah Hospital, Johor, Malaysia
    Matched MeSH terms: Medical Waste Disposal
  10. Hasan UA, Mohd Hairon S, Yaacob NM, Daud A, Abdul Hamid A, Hassan N, et al.
    PMID: 31514391 DOI: 10.3390/ijerph16183356
    Background: Structured education is needed to cultivate safe sharp disposal behavior among diabetic patients. Thus, this study aimed to assess the effectiveness of the Diabetes Community Sharp Disposal Education Module in improving knowledge and sharp disposal practice among Malaysian Type 2 diabetic patients. Methods: This quasi-experimental study was conducted at primary health clinics in two districts in Kelantan, a state in the North-East Region of Peninsular Malaysia. A total of 132 Type 2 diabetic patients on insulin therapy were involved, with 68 participants in each control and intervention group. The health education intervention was based on the validated Diabetes Community Sharp Disposal Education Module. The knowledge and practices were measured using a validated questionnaire at baseline, one month, and three months after the intervention. Results: There was a significant increment in the mean knowledge score for intervention group; from baseline to one month follow up and from baseline to three months follow up [Greenhouse-Geisser; F(1.5, 199.7) = 62.38, p < 0.001; effect size (η2) = 0.318]. Intervention group had significantly higher mean knowledge score as compared to control group; at one month and three months follow up [F(1, 134) = 17.38, p < 0.001; effect size (η2) = 0.115]. There was a statistically significant increment in the proportion of participants in the intervention group who practiced the proper community sharp disposal method over time, X2(2) = 52.061, p < 0.001. Conclusions: The Diabetes Community Sharp Disposal Education Module was an effective health education tool to improve knowledge and encourage Malaysian diabetic patients to engage with proper sharp disposal practices.
    Matched MeSH terms: Medical Waste Disposal*
  11. Ishak AS, Haque MS, Sadhra SS
    Occup Med (Lond), 2019 Apr 13;69(2):99-105.
    PMID: 30295884 DOI: 10.1093/occmed/kqy129
    BACKGROUND: Needlestick injury (NSI) is a significant occupational health issue among healthcare workers (HCWs).

    AIMS: To determine the national self-reported incidence and risk factors for NSI among Malaysian Ministry of Health (MOH) HCWs.

    METHODS: Using data from the MOH national sharps injury surveillance programme, information on reported NSIs over a 1-year period (2016) for different HCW subgroups were extracted and analysed.

    RESULTS: A total of 1234 NSI cases were reported in 2016, giving an overall incidence of 6 injuries per 1000 HCWs. Medical doctors recorded the highest incidence (21.1 per 1000 HCWs) followed by dental staff (7.5), pharmacy staff (4.2), nurses (3.7), medical assistants (3.4) and allied and auxiliary staff (1.0). Doctors had significantly increased risk of NSI compared with allied and auxiliary staff (relative risk [RR] = 20.7, 95% confidence interval [CI] 15.5-27.5), medical assistants (RR = 6.1, 95% CI 4.5-8.2), nurses (RR = 5.7, 95% CI 5.0-6.6), pharmacy staff (RR = 5.0, 95% CI 3.7-6.6) and dental staff (RR = 2.8, 95% CI 2.2-3.5). Significant differences were found in age and sharps- handling experience between occupational subgroups (P < 0.001 for both variables). Male employees had higher risk than females (RR = 1.33, 95% CI 1.18-1.50), with a significant difference seen in their sharps-handling experience (P < 0.01). Important risk factors included unsafe practices such as recapping of needles and their improper disposal.

    CONCLUSIONS: The national incidence of NSI amongst Malaysian HCWs was lower compared with other countries, but unsafe practices remain an important concern. There is a need to formulate, implement and monitor safe and consistent practices for the different healthcare professionals.

    Matched MeSH terms: Medical Waste Disposal/standards
  12. Amir Sultan MM, Goh CT, Wan Puteh SE, Mokhtar M
    Int J Health Care Qual Assur, 2019 Feb 11;32(1):34-44.
    PMID: 30859864 DOI: 10.1108/IJHCQA-08-2017-0161
    PURPOSE: Mercury is widely used in medical and healthcare facilities as dental amalgam, mercury-added medical devices, thiomersal-containing vaccines, laboratory analysis and for other general applications despite the hazards. Various agencies consistently promote mercury-free medical facilities through mercury-free alternatives and better management practices, which are in line with the Minamata Convention on Mercury that aims to protect human health and environment from anthropogenic mercury release. The paper aims to discuss these issues.

    DESIGN/METHODOLOGY/APPROACH: The authors conducted a gap analysis on recommended practices gathered from the literature and current practices gathered through semi-structured interviews with Malaysian medical personnel. A life cycle approach was adopted covering mercury use: input, storage, handling, accident, waste disposal and governance phases.

    FINDINGS: The authors found that there are significant gaps between recommended and current mercury management practices. Analysis indicates improper mercury management as the main contributor to these gaps. The authors found from recommended practices that core components needing improvement include: mercury management action plan, mercury use identification team, purchasing policy, proper guidelines and monitoring systems.

    PRACTICAL IMPLICATIONS: This study helps us to understand mercury management practices and suggests essential steps to establish a mercury-free medical facility.

    ORIGINALITY/VALUE: This study explored the gaps between recommended and current mercury management practices in a medical facility and contributes to the Minamata Convention on Mercury aspirations.

    Matched MeSH terms: Medical Waste Disposal/standards*
  13. Hasan UA, Mohd Hairon S, Yaacob NM, Daud A, Abdul Hamid A, Hassan N, et al.
    PMID: 31247892 DOI: 10.3390/ijerph16132251
    BACKGROUND: Type 2 diabetic patients are major users of medical sharps in the community. Proper sharp disposal practice among them, however, was reported to be low. The current study was aimed to determine the factors contributing to sharp waste disposal at a health care facility among Type 2 diabetic patients.

    METHODS: In this cross-sectional study, Type 2 diabetic patients who were on insulin therapy attending health clinics were randomly selected and interviewed using a validated questionnaire. Binary logistic regression analysis was applied.

    RESULTS: Out of 304 respondents, only 11.5% of them brought their used sharps to be disposed at health care facilities. Previous advice on sharp disposal from health care providers, knowledge score, and duration of diabetes were significant contributing factors for sharp waste disposal at health care facilities: (Adj. OR 6.31; 95% CI: 2.63, 15.12; p < 0.001), (Adj. OR 1.05; 95% CI: 1.03, 1.08; p < 0.001), and (Adj. OR 2.51; 95% CI: 1.06, 5.93; p = 0.036), respectively.

    CONCLUSION: Continuous education and a locally adapted safe sharp disposal option must be available to increase awareness and facilitate diabetic patients adopting proper sharp disposal behavior.

    Matched MeSH terms: Medical Waste Disposal/methods*
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