Exponential modelling of heart rate recovery after a maximal exercise

Objectives: Heart rate recovery (HRR) after exercise is clinically important as a predictor of mortality. In addition, HRR is an indicator of cardiac autonomic activity, since increased vagal activity and diminished sympathetic activity return the heart rate to resting conditions after exercise. The previous attempts to model HRR using polynomial, first-order and second-order modelling have produced mixed results. In this study, we hypothesised that the double-exponential fit would model the HRR more accurately than the single-exponential fit as it would capture the activity of both autonomic arms responsible for heart rate decay and investigated the outcome of these two models on the HRR data following a maximal exercise. Materials and Methods: Exponential curve fitting was done on a set of previously published data from our laboratory. The HRR data were acquired from 40 male participants (19–38 years) after a maximal treadmill exercise. The normalised HRR data from a 5-min time window from maximal heart rate were fitted using single and double-exponential curves, to obtain, respectively, the time constants Tau and, Tau 1 and Tau 2. The goodness-of-fit of the model was assessed with Chi-square values computed for each participant data set with both models. Considering that Chi-square of zero is a perfect fit, and therefore, smaller Chi-square values indicate a better fit than larger values, we computed the difference in the Chi-square values (??2 ) between the models by subtracting the Chi-square value of the double-exponential fit from the Chi-square value of the singleexponential fit. This was based on the premise that if the calculated ??2 is positive, it would indicate a better fit with double-exponential than single-exponential decay model. The data are presented as mean ± standard deviation. Comparisons were made with Student’s t-test. Results: Data from four participants were excluded for technical reasons. The Tau of the single-exponential fit was 65.50 ± 12.13 s, while Tau 1 and Tau 2 of the double-exponential fit were 43.75 ± 18.96 s and 120.30 ± 91.32 s, respectively, the Tau 1 value being significantly lower than the Tau 2 value (P < 0.0001). Remarkably among the 36 participants, the difference in the Chi-square value was positive (127.2 ± 171.04) in 22 subjects and zero or marginally negative (?0.17 ± 0.31) in 14 subjects. Conclusion: Our results indicate that the double-exponential model fitted the HRR data better than the single-exponential model in almost two-thirds (61%) of our study population. In the remaining participants, the goodness-of-fit was nearly equivalent for both fits with no evidence of superior modelling with the singleexponential fit. Our data show that while the single-exponential fit is sufficient for modelling the HRR of 14 subjects, it was less efficient for fitting the data of most participants. In comparison, the double-exponential curve fit effectively modelled 100% of our study population. Given our findings, we conclude that the doubleexponential model is more inclusive and better represented the HRR data of our study population than the singleexponential model.

Integration of a virtual pharmacy simulation platform in remote learning: Experiences and early lessons of UP College of Pharmacy

@#The COVID-19 pandemic created the urgent need to use online and virtual platforms to facilitate development of skills and competencies as part of remote learning of students. MyDispense®, a learning management system developed by Monash University in Australia, is a practice-based online tool utilized by the University of the Philippines College of Pharmacy to teach dispensing skills in Dispensing and Incompatibilities courses (Phar 154 and Pharm 133). This commentary describes how MyDispense® was used as an online retail pharmacy simulation through the SEIPS (Systems Engineering Initiative for Patient Safety) model, with discussion on how the person, tasks, organization, tools and technology, and virtual environment work within the teaching and learning process in dispensing. The application of MyDispense® as a learning platform both in remote and traditional teaching can be further explored to maximize its features and utility.

Online resources for information on shoulder arthroplasty: an assessment of quality and readability

Background@#Many patients use online resources to educate themselves on surgical procedures and make well-informed healthcare decisions. The aim of our study was to evaluate the quality and readability of online resources exploring shoulder arthroplasty. @*Methods@#An internet search pertaining to shoulder arthroplasty (partial, anatomic, and reverse) was conducted using the three most popular online search engines. The top 25 results generated from each term in each search engine were included. Webpages were excluded if they were duplicates, advertised by search engines, subpages of other pages, required payments or subscription, or were irrelevant to our scope. Webpages were classified into different source categories. Quality of information was assessed by HONcode certification, Journal of the American Medical Association (JAMA) criteria, and DISCERN benchmark criteria. Webpage readability was assessed using the Flesch reading ease score (FRES). @*Results@#Our final dataset included 125 web pages. Academic sources were the most common with 45 web pages (36.0%) followed by physician/private practice with 39 web pages (31.2%). The mean JAMA and DISCERN scores for all web pages were 1.96±1.31 and 51.4±10.7, respectively. The total mean FRES score was 44.0±11.0. Only nine web pages (7.2%) were HONcode certified. Websites specified for healthcare professionals had the highest JAMA and DISCERN scores with means of 2.92±0.90 and 57.96±8.91, respectively (P<0.001). HONcode-certified webpages had higher quality and readability scores than other web pages. @*Conclusions@#Web-based patient resources for shoulder arthroplasty information did not show high-quality scores and easy readability. When presenting medical information, sources should maintain a balance between readability and quality and should seek HONcode certification as it helps establish the reliability and accessibility of the presented information.Level of evidence: IV.

Evaluation of online video content related to reverse shoulder arthroplasty: a YouTube-based study

Reverse shoulder arthroplasty (RSA) has evolved continuously over recent years, with expanded indications and better outcomes. YouTube is one of the most popular sources globally for health-related information available to patients. Evaluating the reliability of YouTube videos concerning RSA is important to ensure proper patient education. Methods: YouTube was queried for the term “reverse shoulder replacement.” The first 50 videos were evaluated using three different scores: Journal of the American Medical Association (JAMA) benchmark criteria, the global quality score (GQS), and the reverse shoulder arthroplasty-specific score (RSAS). Multivariate linear regression analyses were conducted to determine the presence of a relationship between video characteristics and quality scores. Results: The average number of views was 64,645.78±264,160.9 per video, and the average number of likes was 414 per video. Mean JAMA, GQS, and RSAS scores were 2.32±0.64, 2.31±0.82, and 5.53±2.43, respectively. Academic centers uploaded the highest number of videos, and surgical techniques/approach videos was the most common video content. Videos with lecture content predicted higher JAMA scores whereas videos uploaded by industry predicted lower RSAS scores. Conclusions: Despite its massive popularity, YouTube videos provide a low quality of information on RSA. Introducing a new editorial review process or developing a new platform for patients’ medical education may be necessary. Level of evidence: Not applicable.

InSpace Balloon for the Management of Massive Irreparable Rotator Cuff Tears:A Systematic Review and Meta-Analysis

Background@#The best course of action for massive irreparable rotator cuff tears (MIRCTs) is not universally agreed upon. Numerous surgical techniques have been discussed. The implantation of a biodegradable spacer into the subacromial area has been documented since 2012 by several authors. The implantation method is touted as being simpler, repeatable, and less invasive than other solutions that are now available. The purpose of this systematic review and meta-analysis, being the first of its kind, was to evaluate the literature to see the efficacy of InSpace balloon (ISB) implantation in the management of MIRCTs. @*Methods@#Following Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines, and with 2 researchers assessing and analyzing each study separately, an extensive electronic search of the literature was conducted in the PubMed database from 1961 until July 27, 2022. @*Results@#Fourteen studies were included in this systematic review and three in the meta-analysis. Eleven out of fourteen studies favored ISB use for MIRCTs, while only three were against its use. All spacers were arthroscopically implanted in the subacromial space. Three studies were included in the meta-analysis. The differences in the compared outcomes were statistically insignificant. @*Conclusions@#A controversy about the use of ISB remains in patients with MIRCTs. Both good and bad outcomes were reported.However, the majority of patients had good clinical outcomes across several grading scales, radiographic evidence of improved impingement, and self-report that they would redo the procedure in hindsight. To draw more solid conclusions and have statistically significant results in the meta-analysis, more randomized controlled trials and comparative studies comparing this device to other treatments are needed.

Anterior Shoulder Instability and Open Procedures:History, Indications, and Clinical Outcomes

The shoulder, being the most mobile joint in the human body, is often susceptible to dislocations and subluxations more so than other joints. As such, shoulder instability constitutes a common complaint among patients worldwide, especially those who are young, participate in contact sports, and have increased innate flexibility in their joints. Management options in the setting of instability vary between conservative and surgical options that aim to mitigate symptoms and allow return of function. Surgical options can be arthroscopic and open, with a general shift among surgeons towards utilizing arthroscopic surgery in the past several decades. Nevertheless, open procedures still play a role in managing shoulder instability patients, especially those with significant bone loss, recurrent instability, coexisting shoulder pathologies, and high risk of failure with arthroscopic surgery. In these clinical settings, open procedures, like the Latarjet procedure, open Bankart repair, glenoid bone augmentation using iliac crest autograft or distal tibial allograft, and salvage options like glenohumeral arthrodesis and arthroplasty may show good clinical outcomes and low recurrence rates. Each of these open procedures possesses its own set of advantages and disadvantages and entails a specific set of indications based on published literature. It is important to cater treatment options to the individual patient in order to optimize outcomes and reduce the risk of complications. Future research on open shoulder stabilization procedures should focus on the long-term outcomes of recently utilized procedures, investigate different graft options for procedures involving bone augmentation, and conduct additional comparative analyses in order to establish concrete surgical management guidelines.

Comparison of primary follicular lymphoma of gastrointestinal tract and secondary involvement: A study from South India

Primary follicular lymphoma of the gut (PFL-GI) is a rare entity. This study aims to compare the clinicopathologic features of PFL-GI with cases of gastrointestinal involvement by disseminated nodal follicular lymphoma. This is a retrospective study with 6 cases of primary follicular lymphoma and 8 cases of secondary involvement of the gut, over a period of 9 years. The slides and blocks were retrieved and reviewed. Clinical data was obtained from hospital records. Clinicopathologic features were compared. PFL-GI cases had a slightly higher median age group (p value 0.23) and no gender predilection when compared to cases with secondary involvement which showed a female preponderance. Para-aortic lymphadenopathy was seen in all secondary cases whereas none of the primary cases showed significant lymphadenopathy. The only microscopic feature that was different was the presence of hollowed out pattern of immunostaining for follicular dendritic cells seen in all cases of PFL-GI but in none of the secondary cases

Integration of a virtual pharmacy simulation platform in remote learning: Experiences and early lessons of UP College of Pharmacy

@#The COVID-19 pandemic created the urgent need to use online and virtual platforms to facilitate development of skills and competencies as part of remote learning of students. MyDispense®, a learning management system developed by Monash University in Australia, is a practice-based online tool utilized by the University of the Philippines College of Pharmacy to teach dispensing skills in Dispensing and Incompatibilities courses (Phar 154 and Pharm 133). This commentary describes how MyDispense® was used as an online retail pharmacy simulation through the SEIPS (Systems Engineering Initiative for Patient Safety) model, with discussion on how the person, tasks, organization, tools and technology, and virtual environment work within the teaching and learning process in dispensing. The application of MyDispense® as a learning platform both in remote and traditional teaching can be further explored to maximize its features and utility.

Comparative assessment of infection prevention and control practice among maternity unit health workers in public and private secondary health facilities in Kaduna state, Nigeria

Objectives: Infection prevention and control (IPC) practice in health facility (HF) is abysmally low in developing countries, resulting in significant preventable morbidity and mortality. This study assessed and compared health workers' (HWs) practice of IPC strategies in public and private secondary HFs in Kaduna State. Material and Methods: A cross-sectional comparative study was employed. Using multistage sampling, 227 participants each were selected comprising of doctors, midwives, and nurses from public and private HF. Data were collected using interviewer-administered questionnaire and observation checklist and analyzed using bivariate and multivariate analysis. Statistical significance determined at P < 0.05. Results: The practice of infection prevention was poor. Overall, 42.3% of the HWs did not change their gowns in-between patients, with the significantly higher rates in 73.1% of private compared to 42.3% of public HF workers (P < 0.001). In addition, 30.5% and 10.1% of HWs do not use face mask and eye goggle, respectively, when conducting procedures likely to generate splash of body fluids, however, there was no significant difference in these poor practices in public compared to private HFs. The mean IPC practice was 51.6 ± 12.5%, this was significantly lower among public (48.8 ± 12.5%) compared to private (54.5 ± 11.9%) HF workers (P < 0.0001). Private HF workers were 3 times more likely to implement IPC interventions compared to public HF workers. Conclusion: IPC practice especially among public HF workers was poor. Keywords: Hospital-acquired infection, Infection prevention and control, Maternity unit, Practice

Community acceptance of COVID-19 and demystifying stigma in a severely affected population in Ghana

Objective: We assessed the level of community acceptance of COVID-19, identified and implemented strategies to demystifying stigma in a severely affected population in Tema. Design and Setting: We conducted a cross-sectional study to assess stigma among the Tema community, then identified and implemented interventions to demystify COVID-19 stigma. We interviewed positive cases, their contacts, contact tracers, case management team members, and community members who shared their first hand experiences and knowledge on the current pandemic. Intervention: Based on the information received, we came up with ways of reducing stigma and implemented them in their community. Main Outcome: Stigma demystified Results: Cases and contacts reported being avoided, discriminated against, insulted or had derogatory words used on them by family, friends, work colleagues or the community. Cases and their contacts stated that stigmatisation was fueled by the presence of COVID -19 branded vehicles and security officials at their homes or workplaces. Stakeholder engagement, education and extensive sensitisation of community members were implemented to reduce stigma. Conclusion: We observed deeply entrenched stigma to COVID - 19 positive patients and their contacts in the community. Health care response mechanisms such as the presence of security personnel with contact tracers and case managers and the use of COVID -19 branded vehicles fueled stigma. A multifaceted approach through the engagement of key stakeholders, training of health workers and extensive education and community sensitisation was essential in reducing stigma.

Prevalence of pneumonia by chest x-ray, associated demographic characteristics and health risk factors among COVID-19 patients in Ghana

Objective: The study was conducted to determine the prevalence of radiologically diagnosed pneumonia among COVID-19 patients and associated factors. Design, setting, and participants: A retrospective manual data extraction of 275 medical records of COVID-19 patients was conducted at two COVID-19 national treatment centres in Accra from March to May 2020. All patients had a chest x-ray done. Main outcome and analysis: The main outcome was the presence of pneumonia. Descriptive statistics and Chi-square test of independence were employed to determine the associations between independent variables and the presence of pneumonia. All analysis was performed using Stata 16, and a p-value ≤ 0.05 was deemed significant Results: The prevalence of pneumonia was 44%(95%CI) =38.2-50.0). Chi-square independent test indicated that pneumonia in the COVID-19 patients was associated with educational level, history of domestic and international travel, mass gathering in the past 14 days before diagnosis, and discharge plan (p-value< 0.05). Patients classified as secondary cases (61.5%) and those discharged as fully recovered from the health facility (61.2%) had a higher prevalence of pneumonia. In addition, COVID-19 patients with hypertension (32.1%) and asthma (5.2%) had a significantly higher prevalence of pneumonia. Conclusion: Overall, the prevalence of pneumonia was 44% and was associated with the demographic and personal characteristics of the patients. Early detection through contact tracing and community surveillance should be intensified to pick up more asymptomatic cases. The role of the chest x-ray for triaging patients and for clinical management of symptomatic patients remains key

Virtual Screening and Pharmacokinetic Studies of Potential MAO-B Inhibitors from Traditional Chinese Medicine

Parkinson’s disease (PD) is a chronic neurological disorder of the nervoussystem, initiated by lessened production of dopamine (DA) in the substantia nigra, itaffects circa 50 percent more men than women. Theories reveal that age, genetic andenvironmental factors are involved in PD etiology but age seems to be the mostprominent risk factor. Monoamine oxidase B (MAO-B) play prominent role in theoxidative deamination of DA in the striatum. Inhibition of MAO-B in the brain maydecrease the exhaustion of DA stores and increase endogenous DA level. Glide-XPdocking, Quantum-mechanics Polarized Ligand Docking (QPLD), pharmacokineticstudies and biological activity prediction studies were utilized to explain the bindingmode, molecular interaction, inhibitory potential and pharmacokinetic properties ofTraditional Chinese Medicine (TCM) compounds on MAO-B and compared to standarddrugs used for treatment of PD, selegiline and rasagiline. Molecular docking resultsshowed Rutaecarpine and Chrysophanol to have relatively better inhibitory activitiesthan selegiline and rasagiline. Pharmacokinetic studies revealed that Rutaecarpine andChrysophanol show comparative result with selegiline and rasagiline. Also,Rutaecarpine and Chrysophanol PASS prediction for their monoamine inhibitoryactivity showed greater Pa than Pi value. Our results have shown that Rutaecarpine andChrysophanol can be a better therapeutic candidate in the treatment of PD.

Coronaviruses: a review of their properties and diversity

Human coronaviruses, which hitherto were causative agents of mild respiratory diseases of man, have recently become one of the most important groups of pathogens of humans the world over. In less than two decades, three members of the group, severe acute respiratory syndrome (SARS) coronavirus (CoV), Middle East respiratory syndrome (MERS)-CoV, and SARS-COV-2, have emerged causing disease outbreaks that affected millions and claimed the lives of thousands of people. In 2017, another coronavirus, the swine acute diarrhea syndrome (SADS) coronavirus (SADS-CoV) emerged in animals killing over 24,000 piglets in China. Because of the medical and veterinary importance of coronaviruses, we carried out a review of available literature and summarized the current information on their properties and diversity. Coronaviruses are single-stranded RNA viruses with some unique characteristics such as the possession of a very large nucleic acid, high infidelity of the RNA-dependent polymerase, and high rate of mutation and recombination in the genome. They are susceptible to a number of physical agents and several chemical agents used for disinfection procedures in hospitals and laboratories. They exhibit considerable genetic and host diversity, causing diseases of gastrointestinal and respiratory system in a wide range of vertebrate hosts including humans. The high prevalence of coronaviruses in domestic and wild animals, especially bats and birds, and the propensity for their genomes to undergo mutation and recombination may lead to emergence of new coronaviruses that could pose a serious threat to human and animal health

Epidemiology of COVID-19 outbreak in Ghana, 2020

Objective: Describe the epidemiology of COVID-19 cases detected in the first four months of the pandemic in Ghana by person, place and time to provide an understanding of the local epidemiology of the disease. Methods: We conducted an exploratory descriptive study of all confirmed COVID-19 cases in Ghana from March 12 to June 30, 2020. Data was merged from the country's electronic databases, cleaned and summarized using medians, proportions and geospatial analysis. Design: A cross-sectional study design Setting: Ghana Participants: All confirmed COVID-19 cases in Ghana from March 12 to June 30, 2020 Interventions: None Main Outcome measures: Epidemiological characterization of all confirmed COVID-19 cases recorded from March 12 ­ June 30, 2020 in Ghana by person, place and time. Results: A total of 17,763 cases were recorded with median age (IQR) of 33years (One month to 85 years). Among the confirmed cases, 10,272 (57.8%) were males and 3,521 (19.8%) were symptomatic with cough recorded in 1,420 (40.3%) cases. The remaining 14,242 (80.2%) were asymptomatic. Greater Accra region recorded the highest number of confirmed cases 11,348 (63.9%). All 16 administrative regions had recorded cases of COVID-19 by June 30, 2020 due to internal migration between the hotspots and other regions. The epidemiological curve showed a propagated outbreak with 117 deaths (CFR= 0.67%) recorded. Conclusion: A propagated outbreak of COVID ­ 19 was confirmed in Ghana on March 12, 2020. Internal migration from hotspots to other regions led to the spread of the virus across the nation. Majority of cases were asymptomatic

Road Traffic Injuries in Tamil Nadu: A Growing Public Health Issue

Background: Every year about 5 million people die worldwide due to Injuries, Road traffic Injuries are a neglected public health problem. In the state of Tamil Nadu, India the total number of road accidents has been on a constant rise. Objective: This study aims to provide a description of the reported road traffic accidents in Tamil Nadu based on location, injury rates and fatality rates. Methods: Secondary data on Road traffic accidents was collected from state and national reports published on various authentic sources. Cluster analysis was carried. Result: Two-wheelers accounted for the highest share in total road accidents, Males were found to have higher risk than females. The districts with high injury rates were Villupuram, Ariyalur, Cuddalore, Thiruvarur, Kanchipuram and Nagapatinam. If the current circumstances continue, we predicted that, by the year 2023 the total number of accidents will be approximately 75985 in Tamilnadu. Conclusion: The Tamil Nadu Governments efforts to stop and reverse the increasing trend in the number of road traffic accidents, deaths, injuries through adoption of comprehensive measures covering Engineering, Education, Emergency care and Enforcement is seeing its results, but there is a need for more effective implementation across the state.

The impact of major league baseball on the incidence of operative hand and facial trauma at a level 1 trauma center

BACKGROUND: Professional affiliation between medical centers and professional sports teams can be mutually beneficial in the provision of healthcare and marketing strategy. Anecdotal evidence suggests a link between trauma volume and sporting events; however, there is limited data. This study aims to characterize the incidence of operative hand and facial trauma during professional baseball home games. METHODS: A retrospective review of surgical cases for traumatic hand or facial injuries at a level 1 center between 1999 and 2012 was performed. Demographic information including date of injury, admission status, and operative repair were collected. Patients were grouped based on whether their trauma occurred on the date of a home game. RESULTS: Operative hand and facial trauma occurred at a rate of 33.4 injuries per 100 days with home games, compared to 22.2 injuries per 100 days (incidence rate ratios, 1.50; 95% confidence interval, 1.34–1.69). When home games were played, patients were more likely to present as a result of motorcycle accidents (3.1% vs. 1.5%; P=0.04) or bicycle accidents (5.0% vs. 2.6%; P=0.01). Other mechanisms of trauma were not statistically different. There was an increase incidence of injuries during home games in August; weekly variability showed an increased incidence during the weekends. CONCLUSIONS: There was an increased rate of operative hand and facial injuries on dates with professional home games. The incidence of injuries during home games was higher in the late summer and on the weekends. Further analysis may allow improved resource allocation and strategies for injury prevention and treatment.

Advocacy for research evidence in academic public policy development

The World Ranking of Universities The impetus for this review came from reading the July 2019 Webometrics global survey of universities. The Webometrics survey is embraced widely in Africa, but it is less respected around the world when compared to more influential reviews like the Academic Ranking of World Universities, UK Times Higher Education World University Rankings and QS World University Rankings. The low prestige is because Webometrics consider primarily institution web-presence and activities instead of the quality of instruction, student learning, and research productivity; the central core functions of the universities. In the most recent Webometrics survey, the University of Cape Town is the first mentioned university in Africa but ranked number 274 in the world1. The study also revealed the dominance of South African universities, capturing nine of the top ten institutions in Africa. The University of Ibadan first listed Nigerian university, ranked number 17 in Africa and number 1,233 in the world; outperformed by the University of Ghana, which ranked 16 in Africa and 1,209 globally. After perusing through the report, I immediately called a colleague to share the bad news of the overall poor performance of African universities. We both agreed that the result of the survey is symbolic of the quality of education decline in Nigeria; a country with an educational system that was once the envy of most African nations. Given the dismal ranking of Nigerian universities, our conversation quickly shifted to another equally important academic topic - the recurring and apathetic lack of evidence when private and government establishments in Africa put forth public policies. As I begin to write this review, the motion picture by Jerry Maguire titled "Show me the Money" immediately came to mind. The film is a Hollywood romantic comedy-drama sports movie that grossed more than $273 million and ranked ninth highest in revenue in 1996. Cuba Gooding Jr. won the Academy Award for best-supporting actor role while Tom Cruise won the Golden Globes for best actor in a motion picture musical or comedy. He also bagged three other Guild Awards for his performance in the movie. But this review is not about Tinseltown, the land of make-believe. It is about the need to use empirical data when formulating public policies. For two decades now, evidence-based practice is globally accepted across different academic disciplines. Despite these developments, many academic policy decisions are still made in a vacuum without bibliometric research evidence by many science academies and government establishments in particular