Safety of Permanent Pacemaker Implantation: A Prospective Study

Uncommon Cardiac Perforation and Lead Displacement After Pacemaker Implantation: A Case Study and Diagnostic Insights

BACKGROUND Pacemaker implantation serves as a prevalent therapeutic approach for bradycardia or atrioventricular blocks associated with syncope. While generally regarded as safe, this procedure is not devoid of rare yet severe complications. Examples include lead-induced cardiac perforation resulting in pneumothorax or pericardial effusion, which pose life-threatening risks. CASE REPORT This article presents a case study detailing the experience of an 87-year-old patient diagnosed with complete atrioventricular block who underwent permanent pacemaker implantation, complicated by lead displacement and cardiac perforation. Despite the absence of typical post-implantation symptoms, such as backache, chest tightness, shortness of breath, and drops in blood pressure, the electrocardiogram (ECG) revealed a right bundle-branch block pattern. Additionally, bradycardia and occasional pacemaker capture failure were observed the day following pacemaker implantation. Subsequent X-ray and computer tomography examinations confirmed displacement of the ventricular lead and the presence of cardiac perforation and left pneumothorax. Following emergent thoracic drainage and repositioning of the right ventricular lead, the patient was discharged without further complications. CONCLUSIONS This case highlights the importance of thorough post-implantation monitoring, even in the absence of typical symptoms. Early detection through electrocardiogram, X-ray, and CT can facilitate timely intervention, as demonstrated by the successful treatment and discharge of the patient following emergent thoracic drainage and pacemaker lead repositioning.

Dual Chamber Pacemaker Implant in Coronary Sinus Leading to Several Complications

Permanent pacemaker implantation is a low-risk procedure. However, complications may occur at a rate of around 4-8%. We present a case where initial implantation resulted in complications that could have been avoided by meticulous assessment of lead position in different projections and early post-procedure X-ray that would have delineated other serious complications. We present a case where the right ventricular lead was placed in the coronary sinus, which resulted in the loss of pacing capture with further syncope after the pacemaker implant. This was apparent in the post-procedure electrocardiogram (ECG) with right bundle branch pacing and the lead was repositioned in the right ventricular apex the following day. Furthermore, the patient was discharged home without a chest X-ray (CXR), and she represented a week later with a haemo-pneumothorax and pericardial effusion. A chest drain was placed and was discharged after a slow recovery following several complications that could have been avoidable.

A Comprehensive Review of Cardiovascular Disease Management: Cardiac Biomarkers, Imaging Modalities, Pharmacotherapy, Surgical Interventions, and Herbal Remedies

Cardiovascular diseases (CVDs) continue to be a major global health concern, representing a leading cause of morbidity and mortality. This review provides a comprehensive examination of CVDs, encompassing their pathophysiology, diagnostic biomarkers, advanced imaging techniques, pharmacological treatments, surgical interventions, and the emerging role of herbal remedies. The review covers various cardiovascular conditions such as coronary artery disease, atherosclerosis, peripheral artery disease, deep vein thrombosis, pulmonary embolism, cardiomyopathy, rheumatic heart disease, hypertension, ischemic heart disease, heart failure, cerebrovascular diseases, and congenital heart defects. The review presents a wide range of cardiac biomarkers such as troponins, C-reactive protein, CKMB, BNP, NT-proBNP, galectin, adiponectin, IL-6, TNF-α, miRNAs, and oxylipins. Advanced molecular imaging techniques, including chest X-ray, ECG, ultrasound, CT, SPECT, PET, and MRI, have significantly enhanced our ability to visualize myocardial perfusion, plaque characterization, and cardiac function. Various synthetic drugs including statins, ACE inhibitors, ARBs, β-blockers, calcium channel blockers, antihypertensives, anticoagulants, and antiarrhythmics are fundamental in managing CVDs. Nonetheless, their side effects such as hepatic dysfunction, renal impairment, and bleeding risks necessitate careful monitoring and personalized treatment strategies. In addition to conventional therapies, herbal remedies have garnered attention for their potential cardiovascular benefits. Plant extracts and their bioactive compounds, such as flavonoids, phenolic acids, saponins, and alkaloids, offer promising cardioprotective effects and enhanced cardiovascular health. This review underscores the value of combining traditional and modern therapeutic approaches to improve cardiovascular outcomes. This review serves as a vital resource for researchers by integrating a broad spectrum of information on CVDs, diagnostic tools, imaging techniques, pharmacological treatments and their side effects, and the potential of herbal remedies.

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.

Investigation of the Prevalence and Clinical Characteristics of Early Complication of Electrode Dislodgement in Patients has Indications for Permanent Pacemaker Implantation

Objective

To investigate the prevalence and reopen the drive procedure of early complications of electrode dislodgement in patients with an indication for permanent pacemaker implantation at the Vietnam National Heart Institute.

Methods

This is a study on patients who received permanent pacemaker implantation at the Vietnam National Heart Institute during the period from August 1, 2019 to March 30, 2020.

Results

In all cases with complications of electrode dislodgement after implantation indicated to reopen the machine to handle complications, the results of handling complications are safe and stable.

Conclusion

There is a positive relationship between the events of electrode dislodgement on the pacemaker and the degree of tricuspid valve regurgitation with a statistically significant difference (P < 0.01, OR = 8.2; 95% CI: 1.6-42.9).

Study Factors Associated with Early Complications of the Permanent Pacemaker Implantation: A Research Report in Vietnam

Introduction

The permanent pacemaker implantation has a history of more than 60 years with improved mortality and quality of life but also recorded many complications.

Objectives

The objective is to evaluate the rate of early complications at the National Heart Institute of Vietnam and the factors associated with the early complication of the permanent pacemaker implantation procedure.

Methods

A cross-sectional descriptive is about 294 patients who received permanent pacemaker implantation at the National Heart Institute of Vietnam from 01/08/2020 to 30/30/2020.

Results

The rate of complications is statistically higher in the diabetic group (OR = 2.5; 95% CI: 1.1-5.6), chronic kidney failure (OR = 2.7; 95% CI: 1.1-6.6), preheart surgery (OR = 3.8; 95% CI: 1.3-11.8), taking oral anticoagulants (OR = 4.3; 95% CI: 1.9-9.9), dual antiplatelets (OR = 2.95; 95% CI: 1.1-8.1), continuation to maintain anticoagulants, or dual antiplatelets (OR = 2.7; 95% CI: 1.2-6.4).

Conclusion

Early onset of complications (onset of early complications) has been associated with some factors such as diabetes disease, chronic kidney failure, preheart surgery, oral anticoagulants, dual antiplatelets, continuation to maintain anticoagulation, and antiplatelets with statistical significance.

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.

Methylxanthine Derivatives in the Treatment of Sinus Node Dysfunction: A Systematic Review

While the chronotropic effects of theophylline and aminophylline are well-known, their clinical application in the treatment of sinus node dysfunction has not been established in a review. The purpose of this systematic review is to evaluate the efficacy and safety of methylxanthines in the treatment of bradyarrhythmias associated with sinus node dysfunction. A systematic review was conducted in accordance with PRISMA guidelines on Embase, PubMed, MEDLINE, Cochrane Central, Web of Science, SciELO, Korean Citation Index, Global Index Medicus, and CINAHL through June 2023. A total of 607 studies were identified through the literature search. After applying the inclusion and exclusion criteria, 14 studies were included in this review. The causes of bradyarrhythmias involving the sinoatrial node included acute cervical spinal cord injury, coronavirus disease of 2019, carotid sinus syncope, chronotropic incompetence, heart transplant, and chronic sinus node dysfunction. Theophylline and aminophylline were shown to be effective for increasing heart rate and reducing the reoccurrence of bradyarrhythmias. The data on symptom resolution was conflicting. While many case studies reported a resolution of symptoms, a randomized controlled trial reported no significant difference in symptom scores between the control, theophylline, and pacemaker groups in the treatment of sick sinus syndrome. The incidence of adverse effects was low across all study designs. The data suggests methylxanthines may be useful as an alternative or bridge to nonpharmacologic pacing; however, dosing has yet to be established for various indications. Overall, methylxanthines proved safe and effective as a pharmacologic therapy for bradyarrhythmic manifestations of sinus node dysfunction.

Malignant Neoplasms Arising in the Cardiac Pacemaker Cavity: A Systematic Review

Cancer is the abnormal proliferation of physiologically inadequate cells. Studies have identified the cardiac pacemaker pocket as a site of rare neoplasms. To evaluate the clinical outcomes, treatment, prognosis, and individualized management of tumors originating in the cardiac pacemaker pocket, a systematic review was conducted using case reports and case series available in the PubMed/Medline, Science Direct, Cochrane Central, LILACS, and Scientific Electronic Library Online (Scielo) databases. Pacemaker pocket tumors affected patients with a mean age of 72.9 years, with a higher incidence in males (76.9%, n = 10). The average time for neoplasm development was 4.4 years (54.07 months). The most prevalent model was Medtronic (38.4%, n = 5), with titanium (83.3%) being the most common metal composition. Chemotherapy was the most performed procedure among patients (38.4%), followed by radiation therapy (38.4%) and surgical tumor resection (30.7%). Six analyzed cases (46.1%) resulted in death, and four patients (30.7%) achieved a cure. Patients with pacemakers should be routinely evaluated for the occurrence of malignant tumors at the site of device implantation.

The influence of arm positions on mechanical dyssynchrony measured by gated myocardial perfusion imaging

Background

In routine procedures, patient's arms are positioned above their heads to avoid potential attenuation artifacts and reduced image quality during gated myocardial perfusion imaging (G-MPI). However, it is difficult to achieve this action in the acute period following pacemaker implantation. This study aimed to explore the influence of arm positioning on myocardial perfusion imaging (MPI) in different types of heart disease.

Methods

This study was conducted retrospectively. A total of 123 patients were enrolled and underwent resting G-MPI using a standard protocol with arms positioned above their heads and again with their arms at their sides. All individuals were divided into 3 groups: the normal group, the obstructive coronary artery disease (O-CAD) group, and the dilated cardiomyopathy (DCM) group. The G-MPI data were measured by QGS software and Emory Reconstruction Toolbox, including left ventricular ejection fraction (LVEF), end-diastolic volume (EDV), end-systolic volume (ESV), extent, total perfusion deficit (TPD), summed rest score (SRS), scar burden, phase standard deviation (SD), and phase histogram bandwidth (BW).

Results

In total, extent, TPD, EDV, ESV, LVEF, systolic SD, systolic BW, diastolic SD, and diastolic BW were all significantly different between the 2 arm positions (all P<0.01). On the Bland-Altman analysis, both EDV and ESV with the arm-down position were significantly underestimated (P<0.001). Meanwhile, TPD, extent, and LVEF with the arm-down position were significantly overestimated (P<0.05). Systolic SD, systolic BW, diastolic SD, and diastolic BW were systematically overestimated (P<0.001). In the DCM group (n=52), EDV, ESV, systolic SD, systolic BW, diastolic SD, and diastolic BW were identified as significantly different by the paired t-test between the 2 arm positions (P<0.05). In the O-CAD group (n=32), scar burden, ESV, LVEF, and diastolic BW were significantly different between the 2 arm positions (P<0.05).

Conclusions

Systolic and diastolic dyssynchrony parameters and most left ventricular (LV) functional parameters were significantly influenced by arm position in both normal individuals and patients with heart failure (HF) with different pathophysiologies. More attention should be given to LV dyssynchrony data during clinical evaluation of cardiac resynchronization therapy (CRT) implantation procedure.

Pacemaker-induced cardiomyopathy

ABSTRACT

Chronic right ventricular (RV) pacing is an often-unrecognized cause of cardiomyopathy, despite research that has revealed that chronic RV pacing can cause significant cardiomyopathy and heart failure, leading causes of hospitalization in the United States. Studies have found that chronic RV apical pacing results in ventricular dyssynchrony, reduced cardiac function, and heart failure. This article describes the deleterious effects of permanent cardiac pacemakers and their association with cardiomyopathy and heart failure. More research is needed to investigate other forms of pacing and treatment to prevent ventricular dyssynchrony and myocardial remodeling.

A Review of the Recent Advances of Cardiac Pacemaker Technology in Handling Complications

The total number of annual pacemaker implantations continues to grow globally, and help patients with heart rhythm disorders with an improved quality of life and reduced mortality. The first implantable pacemakers appeared in 1965, characterized by their bulkiness, short battery life, and a single pacing mode. Innovation led to the modern pacemaker: a smaller system with improved battery life and capacity, and innovation in lead technology. Certain arrhythmia conditions may also qualify for leadless pacemaker implantation, thus eliminating the spectrum of complications that could occur with leads. Adverse events can be divided into acute (perforation, lead dislodgement, infection) and long-term (lead fractures, device infection, insulation failure). Traditional long-term complications with leads occur in 10% of patients, compared with device-related adverse effects observed in 6.7% of leadless pacemakers. Furthermore, cardiac pacemaker implantation results in quality of life improvements across all age groups. Large cardiac rehabilitation studies have demonstrated the effectiveness of exercise in reducing the physical complications involved with pacemaker implantation. Of the three randomized controlled trials examined, all of them reported some benefit of exercise in the intervention group compared with the control. The following review aims to discuss the multitude of pacemaker options potentially available for the clinician, complications, their course of management, and the path forward with innovations arising out of previous research within the field.

Management of Complete Heart Block in a Pregnant Woman with Systemic Lupus Erythematosus-Associated Complications: Treatment Considerations and Pitfalls

We present a case of a pregnant woman with systemic lupus erythematosus (SLE) who was diagnosed with asymptomatic complete heart block (CHB) during pregnancy. To evaluate possible risks and benefits of pacemaker (PM) implantation, a multidisciplinary counselling board was held. Its recommendation was to perform PM implantation to prevent intra-uterine growth restriction from insufficient cardiac output using a fluoroscopic protective shield. The procedure was performed without complications and established permanent pacing on onwards ECG examinations. The patient subsequently gave birth to a healthy newborn. After a retrospective clinical case evaluation and review of relevant literature, a presumptive association between CHB and the primary diagnosis was proposed. Above that, pregnant women with SLE who develop hypertension are commonly treated with methyldopa, which may cause conduction abnormalities. Clinical recommendations for young female patients expecting pregnancy are lacking in this area. Careful diagnostic and treatment approaches should be used in the management of possible SLE-related complications in women of child-bearing age, focusing on preventable events.

Leadless Pacemaker Implantation in the Emergency Bradyarrhythmia Setting: Results from a Multicenter European Registry

Background. Data on leadless pacemaker (LPM) implantation in an emergency setting are currently lacking. Objective. We aimed to investigate the feasibility of LPM implantation for emergency bradyarrhythmia, in patients referred for urgent PM implantation, in a large, multicenter, real-world cohort of LPM recipients. Methods. Two cohorts of LPM patients, stratified according to the LPM implantation scenario (patients admitted from the emergency department (ED+) vs. elective patients (ED−)) were retrieved from the iLEAPER registry. The primary outcome of the study was a comparison of the peri-procedural complications between the groups. The rates of peri-procedural characteristics (overall procedural and fluoroscopic duration) were deemed secondary outcomes. Results. A total of 1154 patients were enrolled in this project, with patients implanted due to an urgent bradyarrhythmia (ED+) representing 6.2% of the entire cohort. Slow atrial fibrillation and complete + advanced atrioventricular blocks were more frequent in the ED+ cohort (76.3% for ED+ vs. 49.7% for ED−, p = 0.025; 37.5% vs. 27.3%, p = 0.027, respectively). The overall procedural times were longer in the ED+ cohort (60 (45−80) mins vs. 50 (40−65) mins, p < 0.001), showing higher rates of temporary pacing (94.4% for ED+ vs. 28.9% for ED−, p < 0.001). Emergency LPM implantation was not correlated with an increase in the rate of major complications compared to the control group (6.9% ED+ vs. 4.2% ED−, p = 0.244). Conclusion. LPM implantation is a feasible procedure for the treatment of severe bradyarrhythmia in an urgent setting. Urgent LPM implantation was not correlated with an increase in the rate of major complications compared to the control group, but it was associated with longer procedural times.

Cardiac surgery receipt and outcomes for people using secondary mental healthcare services: Retrospective cohort study using a large mental healthcare database in South London

BACKGROUND

Patients diagnosed with mental health problems are more predisposed to cardiovascular disease, including cardiac surgery. Nevertheless, health outcomes after cardiac surgery for patients with mental health problems as a discrete group are unknown. This study examined the association between secondary care mental health service use and postoperative health outcomes following cardiac surgery.

METHODS

We conducted a retrospective observational research, utilizing data from a large South London mental healthcare supplier linked to national hospitalization data. OPCS-4 codes were applied to classify cardiac surgery. Health results were compared between those individuals with a mental health disorder diagnosis from secondary care and other local residents, including the length of hospital stay (LOS), inpatient mortality, and 30-day emergency hospital readmission.

RESULTS

Twelve thousand three hundred and eighty-four patients received cardiac surgery, including 1,481 with a mental disorder diagnosis. Patients with mental health diagnosis were at greater risk of emergency admissions for cardiac surgery (odds ratio [OR] 1.60; 1.43, 1.79), longer index LOS (incidence rate ratio 1.28; 1.26, 1.30), and at higher risk of 30-day emergency readmission (OR 1.53; 1.31, 1.78). Those who underwent pacemaker insertion and major open surgery had worse postoperative outcomes during index surgery hospital admission while those who had major endovascular surgery had worse health outcomes subsequent 30-day emergency hospital readmission.

CONCLUSION

People with a mental health disorder diagnosis undertaking cardiac surgery have significantly worse health outcomes. Personalized guidelines and policies to manage preoperative risk factors require consideration and evaluation.

Computational Analysis of a Multi-Layered Skin and Cardiac Pacemaker Model Based on Neural Network Approach

The presented study discusses the possible disturbing effects of the electromagnetic field of antennas used in mobile phones or WiFi technologies on the pacemaker in the patient's body. This study aims to obtain information on how the thickness of skin layers (such as the thickness of the hypodermis) can affect the activity of a pacemaker exposed to a high-frequency electromagnetic field. This study describes the computational mathematical analysis and modeling of the heart pacemaker inserted under the skin exposed to various electromagnetic field sources, such as a PIFA antenna and a tuned dipole antenna. The finite integration technique (FIT) for a pacemaker model was implemented within the commercially available CST Microwave simulation software studio. Likewise, the equations that describe the mathematical relationship between the subcutaneous layer thickness and electric field according to different exposures of a tuned dipole and a PIFA antenna are used and applied for training a neural network. The main output of this study is the creation of a mathematical model and a multilayer feedforward neural network, which can show the dependence of the thickness of the hypodermis on the size of the electromagnetic field, from the simulated data from CST Studio.

A non-randomized clinical trial to examine patients' experiences and communication during telemonitoring of pacemakers after five years follow-up

Patients with pacemakers need regular follow-ups which are demanding. Telemonitoring for pacemaker can provide a new opportunity to avoid follow-up visits. On the other hand, in-person visits could help patients with pacemakers to cope better with the anxiety linked to their condition and maintain better communication with their doctors than simple remote control of their device status. Therefore, our objective was to analyze the experiences and communication comparing telemonitoring (TM) versus conventional monitoring (CM) of patients with pacemakers. A single-center, controlled, non-randomized, non-blinded clinical trial was designed. Data were collected five years after implantation in a cohort of 89 consecutive patients assigned to two different groups: TM and CM. The ‘Generic Short Patient Experiences Questionnaire’ (GS-PEQ) was used to assess patients’ experiences, and the Healthcare Communication Questionnaire (HCCQ) was used to measure the communication of patients with healthcare professionals. Additionally, an ad-hoc survey including items from the ‘Telehealth Patient Satisfaction Survey’ and a ‘costs survey’ was used. After five years, 55 patients completed the study (TM = 21; CM = 34). Participants’ mean (±SD) age was 81 (±6.47), and 31% were females. No differences in baseline characteristics between groups were found. The comparative analyses TM versus CM showed some significant differences. According to GS-PEQ, TM users received adequate information about their diagnosis or afflictions (p = .035) and the treatment was better adapted to their situation (p = .009). Both groups reported negative experiences regarding their involvement in their treatment decisions, the waiting time before admission, and perceived a low-benefit. According to HCCQ, the TM group experienced poorer consultation management by the healthcare provider (p = .041). Participants reported positive overall communication experiences. The study provides insights into the experiences and communication in PM monitoring services as well as specific areas where users reported negative experiences such as the consultation management by clinicians.

Trial registration: ClinicalTrials.gov NCT02234245.

Patient Perceptions and Quality of Life in Pacemaker Recipients

Quality of life (QoL) reflects the multidimensional impact of a clinical condition and its treatment on patients’ daily lives. Although permanent cardiac pacemakers (PPMs) have made a significant contribution to the improvement of patients’ QoL, patients’ perceptions remain crucial after implantation. Hence, the present study was carried out to explore the QoL and the associated perceptions of PPM patients. A total of 150 PPM patients were enrolled. Data were collected using the Short Form–36 (SF-36) health survey, which also included patients’ characteristics. The statistical significance level was set at p < 0.05. The physical health score as measured by SF-36 was 42.9 ± 19.5 points, and the mental health score was 54.1 ± 26.6 points. Study participants had higher scores in emotional well-being (66.5 ± 18.8 points), and the lowest scores were in physical functioning (22.5 ± 10.7 points). The level of information about PPM was associated with physical role (p = 0.005), emotional role (p = 0.004), emotional well-being (p = 0.001), social functioning (p = 0.002), and general health (p = 0.001). Attendance at follow-up was associated with physical role (p = 0.015), emotional role (p = 0.014), social functioning (p = 0.003), and general health (p = 0.016). The belief that the device prevents disease deterioration was associated with physical role (p = 0.005), emotional role (p = 0.001), energy/fatigue (p = 0.010), emotional well-being (p = 0.004), social functioning (p = 0.001), pain (p = 0.005), and general health (p = 0.001). Dependency on the device was associated with energy/fatigue (p = 0.006), emotional well-being (p = 0.001), and social functioning (p = 0.002). Social difficulties due to the device were associated with emotional well-being (p = 0.001), social functioning (p = 0.001), pain (p = 0.001), and general health (p = 0.004). Family support was associated with emotional role (p = 0.023) and general health (p = 0.036), while pain was associated with information about the family (p = 0.001). In conclusion, the present findings regarding factors associated with QoL provide key opportunities for interventions aimed at facilitating positive adjustments after PPM implantation.

Cardiac implantable electronic devices and cybersecurity

INTRODUCTION

Many cardiac devices, such as implantable cardioverter-defibrillators (ICD) and pacemakers (PPM), often involve a remote connection to allow for data transfer and accessibility from the device to the medical clinic. These devices are vulnerable to cybersecurity threats and data breach.

AREAS COVERED

The FDA, device manufacturers and professional cardiology societies work in conjunction to assess and evaluate potential areas of weakness in medical devices and formulate software update improvements to strengthen patient safety. We undertook a literature review focusing on the history, progression, and improvements in monitoring of cybersecurity vulnerabilities surrounding cardiovascular medical devices.

EXPERT OPINION

Cardiac device cybersecurity will continue to evolve and progress as more research is conducted on potential areas of vulnerabilities. The standard procedure as of now is for multiple perspectives from the FDA, professional organizations, device manufacturers, physicians, and patients to review and analyze the effectiveness of cybersecurity safeguards for these devices. We believe this practice will continue as it equally involves all stakeholders in relation to the manufacturing, distribution, and use of these devices. As information technology capabilities expand, safer and secure medical devices and cardiac technology to prevent the threat of hacking will continue to expand and improve.

Right ventricular perforation, pneumothorax, and a pneumatocele by a pacemaker lead: a case report

Background

Perforation of the right ventricle by a pacemaker lead is a rare and potentially life-threatening complication. We present a patient who developed right ventricular perforation, pneumothorax, and a cyst and underwent partial lung resection.

Case presentation

A 94-year-old woman was diagnosed with sick sinus syndrome and underwent a dual-chamber permanent pacemaker implantation. The next day, pacing failed and chest radiography showed that the right ventricular lead was outside the cardiac silhouette. Computed tomography revealed that the lead had perforated the right ventricular apex, causing a left-sided pneumothorax and a cystic lesion at the site of pulmonary injury by the pacemaker lead. The patient underwent lung resection and a right ventricular lead extraction. Pathological analysis revealed the cystic lesion to be an acute pneumatocele.

Conclusions

Pneumothorax and pneumatocele associated with right ventricular pacemaker lead perforation is extremely rare. In our case, a radical surgical intervention provided an excellent outcome.

Discriminant Tensor-Based Manifold Embedding for Medical Hyperspectral Imagery

Medical hyperspectral imagery has recentlyattracted considerable attention. However, for identification tasks, the high dimensionality of hyperspectral images usually leads to poor performance. Thus, dimensionality reduction (DR) is crucial in hyperspectral image analysis. Motivated by exploiting the underlying structure information of medical hyperspectral images and enhancing the discriminant ability of features, a discriminant tensor-based manifold embedding (DTME) is proposed for discriminant analysis of medical hyperspectral images. Based on the idea of manifold learning, a new discriminant similarity metric is designed, which takes into account the tensor representation, sparsity, low-rank and distribution characteristics. Then, an inter-class tensor graph and an intra-class tensor graph are constructed using the new similarity metric to reveal intrinsic manifold of hyperspectral data. Dimensionality reduction is achieved by embedding this supervised tensor graphs into the low-dimensional tensor subspace. Experimental results on membranous nephropathy and white bloodcells identification tasks demonstrate the potential clinical value of the proposed DTME.

Spatial-Spectral Density Peaks-Based Discriminant Analysis for Membranous Nephropathy Classification Using Microscopic Hyperspectral Images

The traditional differential diagnosis of membranous nephropathy (MN) mainly relies on clinical symptoms, serological examination and optical renal biopsy. However, there is a probability of false positives in the optical inspection results, and it is unable to detect the change of biochemical components, which poses an obstacle to pathogenic mechanism analysis. Microscopic hyperspectral imaging can reveal detailed component information of immune complexes, but the high dimensionality of microscopic hyperspectral image brings difficulties and challenges to image processing and disease diagnosis. In this paper, a novel classification framework, including spatial-spectral density peaks-based discriminant analysis (SSDP), is proposed for intelligent diagnosis of MN using a microscopic hyperspectral pathological dataset. SSDP constructs a set of graphs describing intrinsic structure of MHSI in both spatial and spectral domains by employing density peak clustering. In the process of graph embedding, low-dimensional features with important diagnostic information in the immune complex are obtained by compacting the spatial-spectral local intra-class pixels while separating the spectral inter-class pixels. For the MN recognition task, a support vector machine (SVM) is used to classify pixels in the low-dimensional space. Experimental validation data employ two types of MN that are difficult to distinguish with optical microscope, including primary MN and hepatitis B virus-associated MN. Experimental results show that the proposed SSDP achieves a sensitivity of 99.36%, which has potential clinical value for automatic diagnosis of MN.

Upper extremity dysfunctions in patients with cardiac implantable electronic devices: a systematic review

Background/Aims

The prevalence of cardiac implantable electronic devices has risen considerably during recent years. This has revolutionised the treatment of cardiac arrhythmias, which in turn reduced the incidence of sudden cardiac death. There are several complications associated with cardiac implantable electronic device implantation. Upper extremity dysfunction is one of the complications associated with this procedure and it should be addressed, since it can affect activities of daily living. This systematic review analysed the prevailing evidence pertaining to the common upper extremity dysfunctions associated with receiving a cardiac implantable electronic device.

Methods

A comprehensive literature search was conducted using PubMed, Cochrane Central Register of Controlled Trials, EMBASE (through Cochrane) and Google Scholar for original research published in the English language. The Rayyan QCRI web application was used for study selection and the decision-making process. PRISMA guidelines were used to conduct and report this review. The methodological quality of the included studies was appraised using the Newcastle–Ottawa Scale and Joanna Briggs Institute critical appraisal tool for analytic cross-sectional studies and case reports.

Results

This systematic review included eight studies with a total of 696 participants. The most common upper extremity dysfunctions associated with receiving a cardiac implantable electronic device were pain and limitation of shoulder range of motion. Limitation of range of motion could be persisted even in the long term after having a cardiac implantable electronic device implanted.

Conclusions

Contributing factors of upper extremity dysfunctions included size of the device, pectoral site of implantation and upper extremity immobilisation practices. Upper extremity dysfunction is an overlooked complication, as it received a relatively low priority, although it may negatively impact quality of life.

Membranous nephropathy classification using microscopic hyperspectral imaging and tensor patch-based discriminative linear regression

Optical kidney biopsy, serological examination, and clinical symptoms are the main methods for membranous nephropathy (MN) diagnosis. However, false positives and undetectable biochemical components in the results of optical inspections lead to unsatisfactory diagnostic sensitivity and pose obstacles to pathogenic mechanism analysis. In order to reveal detailed component information of immune complexes of MN, microscopic hyperspectral imaging technology is employed to establish a hyperspectral database of 68 patients with two types of MN. Based on the characteristic of the medical HSI, a novel framework of tensor patch-based discriminative linear regression (TDLR) is proposed for MN classification. Experimental results show that the classification accuracy of the proposed model for MN identification is 98.77%. The combination of tensor-based classifiers and hyperspectral data analysis provides new ideas for the research of kidney pathology, which has potential clinical value for the automatic diagnosis of MN.

Implant-Associated Infections: A Review of the Safety of Cardiac Implants

Cardiac implantations are among the most critical, and life-saving patient management procedures. Most cardiac implantations are performed to correct abnormalities in the conduction and the rhythm of the heart. Because the implants are intended for long-term use ranging from months to years, the failure of an implant is considered a major setback both in the patients as well as surgeons' perspectives. Implant failures can have multifactorial reasons, amongst which infectious causes need to be adequately addressed. This review attempts to evaluate the nature of implants, etiology, predisposing factors, infection control, and preventive strategies for cardiac implant-associated infections.

Assessing Communication during Remote Follow-Up of Users with Pacemakers in Norway: The NORDLAND Study, a Randomized Trial

As effective communication is a key ingredient for the provision of quality healthcare services, this study aimed to explore the communication experiences in the remote monitoring of older adults with a pacemaker. The study was based on a non-masked randomized observational design. The Healthcare Communication Questionnaire and in-depth interviews were conducted for data collection. A total of 49 patients participated in the study. The study findings reveal overall positive communication experiences by pacemaker users in remote monitoring with no significant differences from users in hospital monitoring. The remote option is perceived as safe and convenient, and communicating with the clinicians from home is considered comfortable and confidential. The study provides insights into the content of communication experiences in telehealth and practical implications in healthcare contexts. In a world that increasingly relies on remote communication, it is crucial to match technologies to patient needs and assess communication with patients. This will ensure the success of new models of care and establish appropriate criteria for the use of telehealth services. These criteria are all relevant in the implementation of health technology in the future as a part of effective patient-centered care.

Access times for supraclavicular and infraclavicular approaches of subclavian vein catheterization in pacemaker insertion

OBJECTIVE

Infraclavicular (IC) approach of subclavian vein (SCV) catheterization is widely used as compared to supraclavicular (SC) approach for pacemaker insertion. The aim of the study was to compare the ease of catheterization of SCV using SC versus IC approach and also record the incidence of complications related to the approach.

METHODS

In the prospective and interventional study, 102 patients enrolled were randomly divided into two groups. In one group, the right SCV catheterization was performed using SC approach, and in the other group, catheterization was performed using IC approach. The total number of participants, who fulfilled the requirements, was 92. Access time, success rate of cannulation, number of attempts to cannulate vein, ease of guidewire and catheter insertion, placement of temporary wire as cine time, patient comfort, and associated complications were recorded. The data collected were analyzed on SPSS software version 26.

RESULTS

The SC approach had a lesser access time as compared to IC approach and this was found to be significant. Non-significant parameters included complications, number of attempts, and cine time. Only one patient from the IC group developed pneumothorax.

CONCLUSIONS

The SC approach of SCV catheterization is comparable to IC approach in terms of landmark accessibility, success rate, and rate of complications. However, IC approach is less feasible in terms of time constraint and is, therefore, less likely to be successful.

Registro Epidemiológico de Implante de Marcapasso Cardíaco Permanente em um Centro de Referência

Objetivo: Identificar o perfil dos pacientes que implantaram marcapasso e as suas complicações em um centro terciário de cardiologia do estado de Santa Catarina. Métodos: Estudo unicêntrico, observacional e prospectivo com 81 pacientes submetidos a implante de marcapasso pelo Serviço de Cirurgia Cardiovascular. Resultados: Marcapasso provisório foi necessário em 42 casos (51,8%) e o tempo médio de permanência do marcapasso provisório foi de 2,2 dias. Óbito ocorreu em 3 pacientes (3,7%), entretanto apenas 1 caso (1,2%) foi associado ao implante.Conclusão: As características clínicas e as indicações do implante da população do estudo foram semelhantes às encontradas na literatura, entretanto o número de complicações mostrou-se elevado e o tempo de permanência do marcapasso provisório está além do recomendado

Epidemiological Record of Permanent Artificial Cardiac Pacemaker Implant at a Reference Center

Objective: To identify the profile of patients who implanted pacemakers and their complications in a tertiary cardiology center in the state of Santa Catarina. Methods: Unicentric, observational and prospective study with 81 patients submitted to pacemaker implantation by the Cardiovascular Surgery Service. Results: Provisional pacemaker was necessary in 42 cases (51.8%) and the average time of temporary pacemaker insertion was 2.2 days. Death occurred in 3 patients (3.7%), however only 1 case (1.2%) was associated with the implant. Conclusion: The clinical characteristics and indications of the implant in the study population were similar to those found in the literature, however the number of complications was high and the length of stay of the provisional pacemaker is beyond that recommended.