Predictors of complications and mortality among patients undergoing pacemaker implantation in resource-limited settings: a 10-year retrospective follow-up study.

INTRODUCTION: Pacemakers (PMs) are used to treat patients with severe bradycardia symptoms. They do, however, pose several complications. Even with these risks, there are only a few studies assessing PM implantation outcomes in resource-limited settings like Ethiopia and other sub-Saharan countries in general. Therefore, this study aims to assess the mid-term outcome of PM implantation in patients who have undergone PM implantation in the Cardiac Center of Ethiopia by identifying the rate and predictors of complications and death. METHODOLOGY: This retrospective study was conducted at the Cardiac Center of Ethiopia from October 2023 to January 2024 on patients who had PM implantation from September 2012 to August 2023 to assess the midterm outcome of the patients. Complication rate and all-cause mortality rate were the outcomes of our study. Multivariable logistic regression was used to identify factors associated with complications and death. To analyze survival times, a Kaplan-Meier analysis was performed. RESULTS: This retrospective follow-up study included 182 patients who underwent PM implantation between September 2012 and August 2023 and were at least 18 years old. The patients' median follow-up duration was 72 months (Interquartile range (IQR): 36-96 months). At the end of the study, 26.4% of patients experienced complications. The three most frequent complications were lead dislodgement, which affected 6.6% of patients, PM-induced tachycardia, which affected 5.5% of patients, and early battery depletion, which affected 5.5% of patients. Older age (Adjusted Odds Ratio (AOR) 1.1, 95% CI 1.04-1.1, p value < 0.001), being female (AOR 4.5, 95%CI 2-9.9, p value < 0.001), having dual chamber PM (AOR 2.95, 95%CI 1.14-7.6, p value = 0.006) were predictors of complications. Thirty-one (17%) patients died during the follow-up period. The survival rates of our patients at 3, 5, and 10 years were 94.4%, 92.1%, and 65.5% respectively with a median survival time of 11 years. Patients with a higher Charlson comorbidity index before PM implantation (AOR 1.2, 95% CI 1.1-1.8, p = 0.04), presence of complications (AOR 3.5, 95% CI 1.2-10.6, p < 0.03), and New York Heart Association (NYHA) class III or IV (AOR 3.3, 95% CI 1.05-10.1, p = 0.04) were associated with mortality. CONCLUSION: Many complications were experienced by patients who had PMs implanted, and several factors affected their prognosis. Thus, it is essential to identify predictors of both complications and mortality to prioritize and address the manageable factors associated with both mortality and complications.

Challenges Faced and Lessons Learned: The Journey of a 22-Year-Old Male with a Mechanical Heart Valve Complicated by Ischemic Stroke in a Developing Country: A Sub-Saharan Africa Prospect.

This report reviews an Ethiopian patient who underwent cardiac surgery and had a mechanical heart valve implanted on the mitral valve with tricuspid valve repair for rheumatic heart disease via a local non-profit organization donation later complicated by cardio-embolic stroke, and aims to describe the challenges faced by patients from rural Ethiopia who require cardiac surgery for rheumatic heart disease and narrate the importance of careful follow-up. The lessons to be drawn from this case are that careful follow-up and adherence to prescribed Vitamin K antagonists after surgery for mechanical heart valves are critical and, when such patients are lost to follow-up as was witnessed in this case, it can induce lifelong morbidity. Morbidity that could have been avoided with strict and meticulous follow-up and with standardized patient tracing or contact systems. When patients are lost to follow-up it needs to be top priority to trace them after cardiac surgery and this report highlights the pivotal role of the health education in such populations. Unless we utilize this opportunity to unlock the door and embrace a systemic approach to reforming our risk assessment, referral chain system, and integration of various healthcare professionals in patient follow-up, as well as enhancing health education among our patients in rural Ethiopia and other low-income countries, the consequences could prove to be significant. Preventing such fatal complications is far superior to managing them afterwards, as it not only saves on expenses but also saves lives and enhances quality-of-life.

Assessment of subclinical left ventricular systolic and diastolic dysfunction in patients with type 2 diabetes mellitus under follow-up at Tikur Anbessa specialized hospital, Ethiopia: a case-control study.

BACKGROUND: Individuals with diabetes mellitus are at increased risk of cardiovascular diseases, which in turn are the most common cause of morbidity and mortality in the diabetic population. A peculiar feature of cardiovascular diseases in this population is that they can have significant cardiac disease while remaining asymptomatic. There is a paucity of data regarding subclinical cardiac imaging features among diabetic adults in Africa, particularly in Ethiopia. This study was conducted to compare the magnitude and spectrum of left ventricular systolic and diastolic dysfunction among asymptomatic type 2 diabetic adults versus a normotensive, non-diabetic control group and to evaluate the determinants of left ventricular diastolic and systolic dysfunction. METHODS: This was a case-control study conducted at Tikur Anbessa specialized hospital, Addis Ababa, Ethiopia. A standard transthoracic echocardiography was done for all study participants with type 2 diabetes mellitus and their normotensive and non-diabetic controls. Structured questionnaires were used to collect demographic and clinical characteristics and laboratory test results. Statistical analysis was done using the SPSS 25.0 software. The data was summarized using descriptive statistics. Bivariate and multivariate analysis was performed to determine the association between variables and echocardiographic parameters. The strength of statistical association was measured by adjusted odds ratios and 95% confidence intervals, with significant differences taken at p < 0.05. RESULTS: We analyzed age- and sex-matched 100 participants in the study (diabetic) group and 200 individuals in the control group. Left ventricular systolic and diastolic dysfunction were significantly more prevalent among diabetic adults than their sex and age matched controls. Among diabetic individuals, ages of 60 years and above, dyslipidemia, use of Metformin and Glibenclamide, high serum triglyceride level, presence of neuropathy and use of statins correlated significantly with the presence of left ventricular diastolic dysfunction. Chronic kidney disease and neuropathy were determinants of left ventricular systolic dysfunction. CONCLUSION: Left ventricular systolic and diastolic dysfunction were significantly more prevalent among diabetic patients than their sex- and age-matched controls in our study. We recommend early screening for subclinical left ventricular dysfunction, especially in the elderly and in those with chronic kidney disease, dyslipidemia, and microvascular complications such as neuropathy.

Unusual Case of Right-Side Infective Endocarditis in a 40-Year-Old Woman with Postpartum Endometritis: A Case Report.

Rarely observed during pregnancy and the postpartum period, right side infective endocarditis (IE) is particularly uncommon among non-drug-addicted individuals. Nonetheless, if it does occur, it poses significant health risks for both the mother and the fetus, even in the absence of pre-existing heart diseases. This case report describes a rare presentation of right-sided IE (IE) in a 40-year-old woman from rural Ethiopia with postpartum endometritis. The patient presented with atypical symptoms, making it challenging to identify the underlying cause. Through careful diagnostic evaluation and a multidisciplinary approach, the team successfully diagnosed and treated the patient, highlighting the importance of swift and accurate diagnosis for managing uncommon right-sided IE cases.

Assessment of Trend, Indication, Complications, and Outcomes of Pacemaker Implantation in Adult Patients at Tertiary Hospital of Ethiopia: Retrospective Follow Up Study.

Background: A pacemaker is a device implanted in the chest to help people with symptomatic bradycardia and life-threatening irregular rhythm. However, it is also associated with many complications. Therefore, this study evaluated pacemaker-related complications and factors associated with them, as there is little data on pacemaker-related complications in sub-Saharan Africa and Ethiopia. Methods: The study was conducted on 118 patients over 18 years old who had pacemakers implanted between 2017 and 2022 at Tikur Anbessa Comprehensive Specialized Hospital in Addis Ababa, Ethiopia who were reviewed by the authors from September 2022 to December 2022. Sociodemographic factors, clinical characteristics, and complications data were extracted using a structured questionnaire by retrospective review of patient records. The chi-square test or Fisher's exact test was performed to evaluate factors associated with complications. Results: The median age of patients was 60.5 years (IQR = 15 years), with men accounting for 50.8% of patients. Hypertension was the most common comorbidity (64.2%). Symptomatic grade 3 AV block was the most common indication (78.8%) for pacemaker implantation. With a mean follow-up of 3.92 ± 1.94 years, 15.3% of patients had complications. Pneumothorax, pocket site infection, and lead dislodgement were the most common complications occurring in 2.54% of patients each. Patient age during surgery (p-value = 0.02), patient gender (p-value = 0.04), pacemaker implanting team (p-value = 0.01), and adherence to follow-up (p-value = 0.04) are related to pacemakers-related complications. Conclusion: Pacemaker implantation is associated with many complications. Pneumothorax, pacemaker pocket infection, and lead dislodgement were the most common complications. Patient age at pacemaker implantation, patient gender, pacemaker implanting team, and follow-up compliance were factors associated with pacemaker-related complications. Skill development through specialized training and compliance counseling may improve outcomes for patients who have complications related to pacemaker implanting team and poor adherence to follow.