14 results on '"Siemens R"'
Search Results
2. Benefit of whole-pelvis radiation for patients with muscle-invasive bladder cancer: An inverse probability treatment weighted analysis
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Marcq, G., primary, Kool, R., additional, Dragomir, A., additional, Kulkarni, G.S., additional, Breau, R.H., additional, Kim, M., additional, Busca, I., additional, Abdi, H., additional, Dawidek, M., additional, Uy, M., additional, Fervaha, G., additional, Cury, F.L., additional, Alimohamed, N., additional, Izawa, J., additional, Jeldres, C., additional, Rendon, R., additional, Shayegan, B., additional, Siemens, R., additional, Black, P.C., additional, and Kassouf, W., additional
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- 2023
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3. Bénéfice de l’irradiation ganglionnaire pour les patients atteints d’un cancer de la vessie infiltrant le muscle : analyse par score de propension d’une cohorte multicentrique
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Marcq, G., Kool, R., Dragomir, A., Kulkarni, G.S., Breau, R.H., Kim, M., Busca, I., Abdi, H., Dawidek, M., Uy, M., Fervaha, G., Alimohamed, N., Izawa, J., Jeldres, C., Ricardo, R., Shayegan, B., Siemens, R., Black, P.C., Cury, F.L., and Kassouf, W.
- Abstract
L’intérêt de l’irradiation des ganglions lymphatiques pelviens est débattu pour les patients atteints d’un cancer de la vessie infiltrant le muscle (TVIM) bénéficiant d’une radiothérapie (RT) à visée curative. L’objectif de notre étude était de comparer les résultats oncologiques entre la RT de la vessie seule (VO) et la RT vessie et pelvis (WP) à l’aide d’une base de données collaborative multicentrique canadienne.
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- 2024
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4. IMPLEMENTING A MULTIDISCIPLINARY MODEL OF CGM CARE IN REAL-WORLD PHARMACY PRACTICE: A CLINICAL CONSENSUS FOR CANADIAN PHARMACISTS
- Author
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Sihota, A., Halperin, I., Jain, A., Chin, A., Chow, W., Jin, S., Molberg, T., Patil, S., Siemens, R., Sivapalan, S., and Smith, T.
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- 2023
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5. A1297 - Benefit of whole-pelvis radiation for patients with muscle-invasive bladder cancer: An inverse probability treatment weighted analysis.
- Author
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Marcq, G., Kool, R., Dragomir, A., Kulkarni, G.S., Breau, R.H., Kim, M., Busca, I., Abdi, H., Dawidek, M., Uy, M., Fervaha, G., Cury, F.L., Alimohamed, N., Izawa, J., Jeldres, C., Rendon, R., Shayegan, B., Siemens, R., Black, P.C., and Kassouf, W.
- Subjects
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CANCER invasiveness , *BLADDER cancer , *PROBABILITY theory , *RADIATION , *BLADDER obstruction , *THERAPEUTICS - Published
- 2023
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6. Benefit of Neoadjuvant Cisplatin-based Chemotherapy for Invasive Bladder Cancer Patients Treated with Radiation-based Therapy in a Real-world Setting: An Inverse Probability Treatment Weighted Analysis.
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Kool R, Dragomir A, Kulkarni GS, Marcq G, Breau RH, Kim M, Busca I, Abdi H, Dawidek M, Uy M, Fervaha G, Cury FL, Alimohamed N, Izawa J, Jeldres C, Rendon R, Shayegan B, Siemens R, Black PC, and Kassouf W
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- Humans, Aged, Female, Male, Middle Aged, Retrospective Studies, Cystectomy methods, Treatment Outcome, Aged, 80 and over, Chemotherapy, Adjuvant, Antineoplastic Agents therapeutic use, Urinary Bladder Neoplasms therapy, Urinary Bladder Neoplasms pathology, Urinary Bladder Neoplasms drug therapy, Urinary Bladder Neoplasms mortality, Urinary Bladder Neoplasms radiotherapy, Neoadjuvant Therapy methods, Cisplatin therapeutic use, Neoplasm Invasiveness
- Abstract
Background: Neoadjuvant chemotherapy (NAC) improves survival for patients with muscle-invasive bladder cancer (MIBC) treated with radical cystectomy. Studies on the potential benefit of NAC before radiation-based therapy (RT) are conflicting., Objective: To evaluate the effect of NAC on patients with MIBC treated with curative-intent RT in a real-world setting., Design, Setting, and Participants: The study cohort consisted of 785 patients with MIBC (cT2-4aN0-2M0) who underwent RT at academic centers across Canada. Patients were classified into two treatment groups based on the administration of NAC before RT (NAC vs no NAC)., Outcome Measurements and Statistical Analysis: The inverse probability of treatment weighting (IPTW) with absolute standardized differences (ASDs) was used to balance covariates across treatment groups. The impact of NAC on complete response, overall, and cancer-specific survival (CSS) after RT in the weighted cohort was analyzed., Results and Limitations: After applying the exclusion criteria, 586 patients were included; 102 (17%) received NAC before RT. Patients in the NAC subgroup were younger (mean age 65 vs 77 yr; ASD 1.20); more likely to have Eastern Cooperative Oncology Group performance status 0-1 (87% vs 78%; ASD 0.28), lymphovascular invasion (32% vs 20%; ASD 0.27), higher cT stage (cT3-4 in 29% vs 20%; ASD 0.21), and higher cN stage (cN1-2 in 32% vs 4%; ASD 0.81); and more commonly treated with concurrent chemotherapy (79% vs 67%; ASD 0.28). After IPTW, NAC versus no NAC cohorts were well balanced (ASD <0.20) for all included covariates. NAC was significantly associated with improved CSS (hazard ratio [HR] 0.28; 95% confidence interval [CI] 0.14-0.56; p < 0.001) and overall survival (HR 0.56; 95% CI 0.38-0.84; p = 0.005). This study was limited by potential occult imbalances across treatment groups., Conclusions: If tolerated, NAC might be associated with improved survival and should be considered for eligible patients with MIBC planning to undergo bladder preservation with RT. Prospective trials are warranted., Patient Summary: In this study, we showed that neoadjuvant chemotherapy might be associated with improved survival in patients with muscle-invasive bladder cancer who elect for curative-intent radiation-based therapy., (Copyright © 2024 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
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- 2024
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7. Benefit of Whole-Pelvis Radiation for Patients With Muscle-Invasive Bladder Cancer: An Inverse Probability Treatment Weighted Analysis.
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Marcq G, Kool R, Dragomir A, Kulkarni GS, Breau RH, Kim M, Busca I, Abdi H, Dawidek M, Uy M, Fervaha G, Alimohamed N, Izawa J, Jeldres C, Rendon R, Shayegan B, Siemens R, Black PC, Cury FL, and Kassouf W
- Abstract
Purpose: The value of pelvic lymph node irradiation is debated for patients with muscle-invasive bladder cancer (MIBC) undergoing curative-intent radiation therapy (RT). We sought to compare the oncological outcomes between bladder-only (BO)-RT and whole-pelvis (WP)-RT using a large Canadian multicenter collaborative database., Patients and Methods: The study cohort consisted of 809 patients with MIBC (cT2-4aN0-2M0) who underwent curative RT at academic centers across Canada. Patients were divided into two groups on the basis of the RT volume: WP-RT versus BO-RT. Inverse probability of treatment weighting (IPTW) and absolute standardized differences (ASDs) were used to balance covariates across treatment groups. Regression models were used to assess the effect of the RT volume on the rates of complete response (CR), cancer-specific survival (CSS), and overall survival (OS)., Results: After exclusion criteria, 599 patients were included, of whom 369 (61.6%) underwent WP-RT. Patients receiving WP-RT were younger (ASD, 0.41) and more likely to have an Eastern Cooperative Oncology Group performance status of 0-1 (ASD, 0.21), clinical node-positive disease (ASD, 0.40), and lymphovascular invasion (ASD, 0.25). In addition, WP-RT patients were more commonly treated with neoadjuvant chemotherapy (ASD, 0.29) and concurrent chemotherapy (ASD, 0.44). In the IPTW cohort, BO-RT and WP-RT groups were well balanced (all pretreatment parameters with an ASD <0.10). In multivariable analysis, WP-RT was not associated with CR rates post-RT (odds ratio, 1.14 [95 CI, 0.76 to 1.72]; P = .526) but was associated with both CSS (hazard ratio [HR], 0.66 [95% CI, 0.47 to 0.93]; P = .016) and OS (HR, 0.68 [95% CI, 0.54 to 0.87]; P = .002), independent of other prognostic factors., Conclusion: Our study demonstrated that WP radiation was associated with better survival compared with bladder radiation alone after adjusted analysis. Additional randomized controlled trials are needed to confirm our findings.
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- 2024
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8. Real-world effectiveness of monoclonal antibody inhibitors of PCSK9 in patients with heterozygous familial hypercholesterolemia: A retrospective cohort study.
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Siemens R, Pryjma M, Buchkowsky S, and Barry AR
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- Humans, Retrospective Studies, Male, Middle Aged, Female, Aged, Cohort Studies, Antibodies, Monoclonal therapeutic use, Antibodies, Monoclonal pharmacology, Treatment Outcome, Heterozygote, Proprotein Convertase 9, PCSK9 Inhibitors, Hyperlipoproteinemia Type II drug therapy, Cholesterol, LDL blood, Anticholesteremic Agents therapeutic use, Antibodies, Monoclonal, Humanized therapeutic use
- Abstract
Background: Heterozygous familial hypercholesterolemia (HeFH) is a genetic condition that is associated with a high risk of atherosclerotic cardiovascular disease (ASCVD) due to elevated lipid levels. Proprotein convertase subtilisin/kexin type 9 (PCSK9) monoclonal antibody inhibitors have been shown to reduce low-density lipoprotein cholesterol (LDL-C) substantially. This study aimed to assess the real-world effectiveness of PCSK9 inhibitor therapy among patients with HeFH., Methods: Retrospective cohort study of patients with probable or definite HeFH on a PCSK9 inhibitor at a specialized lipid clinic between 2015 and 2022. The primary objective was the proportion of patients who attained a ≥50% reduction in LDL-C after 12 months of treatment., Results: In total, 141 patients were screened and 95 were included. Mean age was 63 years, 51% were female, and mean baseline LDL-C level was 4.0 mmol/L (155 mg/dL). A majority of patients (60%) had statin intolerance, and 73% were on ezetimibe. The most common PCSK9 inhibitor was evolocumab (94%). Overall, 74% of patients achieved a ≥50% reduction in LDL-C after 12 months of therapy. Mean LDL-C concentration decreased to 1.7 mmol/L (66 mg/dL) (approximately 59% reduction from baseline) after 12 months of follow-up but increased to 1.9 mmol/L (73 mg/dL) after ≥24 months of follow-up. Similar trends were observed in non-high-density lipoprotein cholesterol and apolipoprotein B. Lipoprotein(a) was significantly reduced by 45% over 12 months. Twelve percent of patients permanently discontinued therapy. Barriers to PCSK9i use were mostly related to cost., Conclusions: In a real-world cohort of HeFH patients, most of which were intolerant to statins, a high majority were able to achieve a ≥50% reduction in LDL-C after 12 months of PCSK9 inhibitor therapy (mean reduction of approximately 59%), which is similar to clinical trial data of patients with ASCVD. A significant reduction in non-high-density lipoprotein cholesterol, apolipoprotein B, and lipoprotein(a) were also observed., (© 2024 The Author(s). Pharmacotherapy: The Journal of Human Pharmacology and Drug Therapy published by Wiley Periodicals LLC on behalf of Pharmacotherapy Publications, Inc.)
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- 2024
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9. Effect of Complete Transurethral Resection on Oncologic Outcomes After Radiation Therapy for Muscle-Invasive Bladder Cancer.
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Avolio PP, Kool R, Shayegan B, Marcq G, Black PC, Breau RH, Kim M, Busca I, Abdi H, Dawidek M, Uy M, Fervaha G, Cury FL, Sanchez-Salas R, Alimohamed N, Izawa J, Jeldres C, Rendon R, Siemens R, Kulkarni GS, and Kassouf W
- Abstract
Purpose: To compare the oncologic outcomes of patients with nonmetastatic muscle-invasive bladder cancer (MIBC) undergoing complete versus incomplete transurethral tumor resection (TURBT) before radiation therapy., Methods and Materials: Patients with nonmetastatic MIBC who underwent curative-intent radiation therapy between 2002 and 2018 at 10 Canadian institutions were retrospectively evaluated. Inverse probability of treatment weighting was performed using baseline characteristics. Differences in survival outcomes by complete and incomplete TURBT were analyzed., Results: Of the 757 patients included, 66% (498) had documentation of a complete and 34% (259) an incomplete TURBT. Before adjustment, 121 (47%) and 45 (9%) patients who underwent incomplete and complete TURBT, respectively, were diagnosed with cT3-4 tumor (P <.001). After weight-adjustment, all baseline cohort characteristics were balanced (absolute standardized differences < 0.1). The adjusted median follow-up was 27 months. Adjusted survival analyses showed no significant difference in 5-year overall survival (48% vs 52%, 1.03 [0.82-1.29]; P = .8), cancer-specific survival (64% vs 61%, 0.93 [0.70-1.25]; P = .7), metastasis-free survival (43% vs 46%, 0.97 [0.79-1.19]; P = .8), and disease-free survival (32% vs 35%, 0.95 [0.79-1.15]; P = .7) between the 2 groups., Conclusions: Complete TURBT may be associated with clinical organ-confined disease. Extent of TURBT was not independently associated with oncologic outcomes in patients with MIBC treated with radiation therapy., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
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- 2024
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10. Understanding the Factors that Affect the Assessment of Student Performance in Pharmacy Practicums.
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Pelletier T, Liang J, Siemens R, and Yeung J
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- Humans, Students, Education, Pharmacy, Pharmaceutical Services, Pharmacies, Pharmacy, Students, Pharmacy
- Abstract
Objective: The purpose of this study was to explore factors that may influence a practice educator's assessment of an entry-to-practice pharmacy student during inpatient direct patient care practicums., Methods: This was a qualitative analysis of semi-structured interviews of existing practice educators from a variety of hospital practice environments. Participants were asked to assess a fictional case of a student's work, which provided a framework for a broader discussion of assessment practices. Interviews were transcribed and subjectively analyzed for themes and factors that each study participant considered for the case and in their past precepting experiences., Results: A total of 13 participants consented and were interviewed. Identified themes included the quality of student work, key aspects of the student's performance, professionalism, and the complexity of the patient assigned to the student. There was significant heterogeneity in both the assessment of the fictional student and the factors that influenced each participant's assessment. It was clear that not all guidance provided by the academic institution is read or followed. Participants described challenges in applying the assessment rubric, including lack of time, training, resources, knowledge of the degree requirements/structure, and psychological factors inherent in high-stakes courses., Conclusion: Complex, varied, and often contradictory factors are used by experiential practice educators in their assessment of pharmacy students on practicum. These findings lead to inconsistency and heterogeneity when assessing a mock case and actual students. Educators should consider mandatory training to ensure those who assess students have an understanding of practicum course expectations and assessments., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 American Association of Colleges of Pharmacy. All rights reserved.)
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- 2024
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11. Bibliometric analysis of academic journal recommendations and requirements for surgical and anesthesiologic adverse events reporting.
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Sholklapper TN, Ballon J, Sayegh AS, La Riva A, Perez LC, Huang S, Eppler M, Nelson G, Marchegiani G, Hinchliffe R, Gordini L, Furrer M, Brenner MJ, Dell-Kuster S, Biyani CS, Francis N, Kaafarani HMA, Siepe M, Winter D, Sosa JA, Bandello F, Siemens R, Walz J, Briganti A, Gratzke C, Abreu AL, Desai MM, Sotelo R, Agha R, Lillemoe KD, Wexner S, Collins GS, Gill I, and Cacciamani GE
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- Humans, Bibliometrics, Journal Impact Factor, Europe, Middle East, Anesthesiology
- Abstract
Background: Standards for reporting surgical adverse events (AEs) vary widely within the scientific literature. Failure to adequately capture AEs hinders efforts to measure the safety of healthcare delivery and improve the quality of care. The aim of the present study is to assess the prevalence and typology of perioperative AE reporting guidelines among surgery and anesthesiology journals., Materials and Methods: In November 2021, three independent reviewers queried journal lists from the SCImago Journal & Country Rank (SJR) portal (www.scimagojr.com), a bibliometric indicator database for surgery and anesthesiology academic journals. Journal characteristics were summarized using SCImago, a bibliometric indicator database extracted from Scopus journal data. Quartile 1 (Q1) was considered the top quartile and Q4 bottom quartile based on the journal impact factor. Journal author guidelines were collected to determine whether AE reporting recommendations were included and, if so, the preferred reporting procedures., Results: Of 1409 journals queried, 655 (46.5%) recommended surgical AE reporting. Journals most likely to recommend AE reporting were: by category surgery (59.1%), urology (53.3%), and anesthesia (52.3%); in top SJR quartiles (i.e. more influential); by region, based in Western Europe (49.8%), North America (49.3%), and the Middle East (48.3%)., Conclusions: Surgery and anesthesiology journals do not consistently require or provide recommendations on perioperative AE reporting. Journal guidelines regarding AE reporting should be standardized and are needed to improve the quality of surgical AE reporting with the ultimate goal of improving patient morbidity and mortality., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2023
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12. Users' perspectives on the quality of family planning services in Mozambique: a case study.
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Pires P, Mupueleque M, Macaringue C, Zakus D, Siemens R, and Belo C
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- Adolescent, Adult, Contraceptive Agents, Delivery of Health Care, Female, Humans, Infant, Newborn, Male, Mozambique, Pregnancy, Contraception methods, Family Planning Services methods
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Introduction: user satisfaction assessment has been increasingly important in ensuring health care quality and guidance in the health sector. Africa is the region in the world with the lowest prevalence of contraception use. Universal access to family planning has one of the highest rates of benefits for cost among strategic options for development. Family planning can reduce mortality associated with pregnancy, childbirth, and postpartum, and family planning consultations are available in primary health care in Mozambique since 1980, with services delivered at all different levels of the national public health system. In 2017 this country had a high maternal mortality rate and one of the known causes was the low use of family planning. Among other causes for low utilization is the bias introduced by health professionals in the prescription of contraceptives and service deficiencies. We intended to assess the users' opinion about family planning visit quality at the Marrere Health Center, to understand how we might consequently increase the use and quality of these services. This study was designed as a planned intermediary evaluation, as part of a larger implementation research project, aiming to reduce maternal and newborn mortality rates in Natikiri neighbourhood, in Nampula peri-urban area., Methods: we carried out a descriptive cross- sectional quantitative case study, where the target population was users of family planning services at a local health center. A random sample of 137 individuals answered a survey consisting of satisfaction, and we consulted family planning service statistical indicators. Users were considered satisfied if they answered "satisfied" or "very satisfied" on questions. Frequencies were calculated with statistical package for the social sciences (SPSS) 22.0 with a confidence interval of 95% and a 5% margin of error. The study protocol was approved by Lúrio University and the University of Saskatchewan (Canada) Ethics Committees., Results: almost all respondents (93%), were adult women with low levels of education. They stated, in general (88%), they were satisfied with the quality of care in the family planning consultation. There was minor participation of men in family planning. However, health professionals were found to not generally follow a patient-centered service protocol, with weaknesses in communication and information sharing, more commonly with adolescent clients., Conclusion: most family planning visits users were adult women, satisfied with the service provided. Successful changes in family planning practice require broad support from political, religious and community sectors. Additionally, proper technical and professional training of health professionals is necessary to achieve a positive impact on individuals, families, communities, and government. Family planning promotion in primary health care is recommended as an important strategy for achieving universal health coverage, protecting the lives of women, and promoting the country's development., Competing Interests: The authors declare no competing interests., (Copyright: Paulo Pires et al.)
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- 2022
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13. Remote Pharmacist-Assisted Flash Continuous Glucose Monitoring Improves Glycemic Outcomes in Patients With Poorly Controlled Diabetes: A Retrospective Case Series.
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Siemens R
- Abstract
This article reports on a retrospective case series evaluating glycemic outcomes using a flash continuous glucose monitoring (CGM) system in pharmacist-managed diabetes cases. The flash CGM system was used during initial assessment of patients' diabetes control and then continued throughout the intervention to ensure the safety and efficacy of the glycemic interventions. The Cloud-based CGM software was used to monitor patients remotely and assess their glycemic metrics. Action plans were created to address areas of most pressing concern, ensuring reduction or elimination of hypoglycemia, correction of hyperglycemia, and minimization of glycemic variability. In these complex cases, use of the flash CGM system in conjunction with lifestyle and medication interventions safely and effectively improved diabetes management and achieved targeted glucose outcomes., (© 2022 by the American Diabetes Association.)
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- 2022
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14. An analysis of the quality of maternity services in Nampula, Mozambique: implementation research.
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Pires P, Mupueleque MA, Mucufo JR, Zakus D, Siemens R, and Belo C
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- Child, Cross-Sectional Studies, Female, Humans, Infant Mortality, Infant, Newborn, Maternal Mortality, Mozambique, Pregnancy, Maternal Health Services, Midwifery
- Abstract
Introduction: the quality of maternity services is an essential factor in reducing maternal and newborn morbidity and mortality, which remains extremely high in Africa. In Mozambique, maternal mortality rate is 451.6 deaths per 100,000 live births (2017). The reasons for this are complex, but one important factor to reduce this burden is to provide effective and efficient care, to improve institutional deliveries. To reduce maternal and newborn mortality rates in Nampula, researchers from Lúrio University and the University of Saskatchewan, carried out an implementation research program, including various interventions such as training activities for health professionals in maternal and child health care. We planned a mid-project evaluation, to assess the trainings´ impact on the quality of services at Marrere Hospital Maternity., Methods: quantitative pre-post study, carrying out two cross-sectional surveys about maternity service quality, one being conducted after five health professionals´ trainings and the other after six more trainings. The two surveys included samples of post-partum women in the maternity, calculated with a 10% margin error and 90% confidence interval for the first survey, and with a 7% margin error and 95% confidence interval for the second. The surveys were entered into REDCap and analysed to assess frequencies, percentages, mean and standard deviations. This research was approved by the Institutional Committees of Bioethics at Lúrio University and at the University of Saskatchewan., Results: one hundred and sixteen post-partum women were surveyed at the maternity, assessing standards of patient centred care during delivery labour. Most areas showed no improvement. Some positive improvements were delivering women were given the option to have a person of their choice accompany them during labour (75%), notably a traditional birth attendant (34%), and they had continuous support from a health professional (68%). But many shortcomings persisted in areas of privacy (33%) and confidentiality (57%)., Conclusion: the quality of patient centred care at Marrere Hospital Maternity did not improve much with health professionals´ trainings. Decreasing the large turnover rate of such staff, reviewing their learning styles, and promoting continuous professional capacity building would be the next steps to improve quality of care., Competing Interests: The authors declare no competing interests., (Copyright: Paulo Pires et al.)
- Published
- 2022
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