Circulation, Volume 150, Issue Suppl_1, Page A4146421-A4146421, November 12, 2024. Background:The potential benefit of an iatrogenic interatrial shunt in heart failure (HF) is based on observations wherein decompression of the pressure-overloaded left atrium appears beneficial. Consequently, devices designed to mimic this effect have been developed. However, their effectiveness remains controversial.Methods:We searched PubMed, Cochrane, and Embase for randomized controlled trials (RCTs) comparing the use of atrial shunt devices (ASD) versus standard therapy in patients with heart failure with preserved ejection fraction (HFpEF). The outcomes of interest were: (1) quality of life assessed using the Kansas City Cardiomyopathy Questionnaire (KCCQ) and (2) HF events after ASD intervention. Heterogeneity was examined with I2 statistics. Statistical analysis was performed using R Studio 4.3.2.Results:A total of 3 RCTs were included, encompassing 966 patients, of whom 479 (49.5%) were in the ASD group. Most of the participants were female (53%), had a three or higher NYHA class(92%), with a mean age of 72.5 years and a mean follow-up of 1.2 years. In the pooled analysis, there was no difference between groups in improvement of KCCQ (MD 0.65; 95% CI −2.22,3.52; p=0.66;I2=0%; Fig 1) and HF events (RR 1.06; 95% CI 0.81,1.39; p=0.68;I2=0%; Fig 2).Conclusion:In this meta-analysis of patients with HFpEF, ASD therapy was not associated with improvements in quality of life and HF events.
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Abstract 4140224: Conservative management of patent ductus arteriosus in preterm infants: a systematic review and meta-analysis of randomized controlled trials
Circulation, Volume 150, Issue Suppl_1, Page A4140224-A4140224, November 12, 2024. Background:In recent years, there has been a rise in the adoption of conservative approaches to managing patent ductus arteriosus (PDA) in preterm infants. Systematic appraisal of the clinical evidence supporting this approach is essential for guiding recommendations in clinical guidelines.Methods:A comprehensive search of MEDLINE (PubMed), Embase, the Cochrane Library, and ClinicalTrials.gov, spanning from inception to April 2024, was conducted to identify all relevant randomized controlled trials (RCTs) that evaluated conservative management of patent ductus arteriosus (PDA) in preterm infants. Conservative management was defined as approximately ≤25% open-label pharmacological treatment with ibuprofen, indomethacin, or paracetamol and/or ligation/endovascular closure. Our primary outcomes were the risk of all-cause mortality and bronchopulmonary dysplasia. We used RevMan 5.4 to pool risk ratios (RRs) under a random-effects model, ensuring a rigorous and reliable analysis.Results:Our review included 6 RCTs. There was no difference in the risk of mortality (RR 0.83; 95% CI: 0.64-1.08, I2= 0%) and BPD (RR 0.89; 95% CI: 0.76-1.03, I2= 22%) between the conservative management and active treatment groups. The rates of necrotizing enterocolitis, intraventricular hemorrhage, retinopathy of prematurity, sepsis, pulmonary hemorrhage, and the need for surgical ligation or transcatheter occlusion were similar between the two groups.Conclusions:The meta-analysis showed no difference in the risk of all-cause mortality, BPD, or other clinical outcomes between a strategy of conservative management compared to active treatment. These findings support a conservative approach for the management of PDA in preterm infants. Future studies should focus on cost-effectiveness analyses between the two approaches and investigate important subgroups, such as extremely preterm births.
Abstract 4144137: Discontinuation vs Continuation of Renin-Angiotensin System Inhibition Before Non-Cardiac Surgery: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4144137-A4144137, November 12, 2024. Background:The optimal management of angiotensin-converting enzyme (ACE) inhibitors during elective surgeries remains uncertain. While some studies suggest that continuing ACE inhibitors increase the risk of perioperative hypotension, others argue that discontinuation may heighten the risk of significant clinical events. This meta-analysis aims to clarify the clinical outcomes associated with continuation compared to discontinuation of ACE inhibitors in surgical settings.Methods:We conducted a systematic search of MEDLINE, Cochrane, and Embase for clinical trials comparing the effects of continuing versus discontinuing ACE inhibitors during surgery. Outcomes evaluated included death, stroke, myocardial injury (MI), intraoperative hypotension, postoperative hypotension, and acute kidney injury (AKI). Data were synthesized using odds ratios (OR) with 95% confidence intervals (CI). Heterogeneity was assessed with I2 statistics, and a random-effects model was applied. Statistical analyses were performed using R software version 4.3.2.Results:From 865 identified studies, 15 studies involving 11,519 patients met the inclusion criteria. Not all studies had outcomes available for comparison between them. The average age was 65.75 years, with 86.45% having hypertension and 13.13% with heart failure. Continuing ACE inhibitors was associated with a higher risk of intraoperative hypotension (OR 1.33; 95% CI 1.16-1.53). No significant differences were found between groups for mortality (OR 1.06; 95% CI 0.68-1.65), stroke (OR 0.99; 95% CI 0.47-2.09), MI (OR 0.98; 95% CI 0.72-1.31), postoperative hypotension (OR 1.27; 95% CI 0.74-2.17), and AKI (OR 0.88; 95% CI 0.66-1.16).Conclusion:Discontinuation of ACE inhibitors before non-cardiac surgery may lower the risk of intraoperative hypotension without significantly affecting mortality, stroke, MI, postoperative hypotension, or AKI. Further research with greater power and better design is needed to confirm these findings.
Abstract 4140984: Palliative Care Interventions Effect on Quality of Life and Symptoms in Patients with Heart Failure: An Updated Systemic Review and Meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4140984-A4140984, November 12, 2024. Introduction:Heart failure (HF) is a prevalent medical condition, affecting approximately 6.7 million Americans. Patients with HF frequently experience comorbidities such as depression and anxiety, which can lead to diminished quality of life. According to the World Health Organization (WHO), palliative care may be beneficial for these patients in addressing their complex physical, mental, and social needs. Therefore, an assessment of palliative care involvement in HF patients is warranted to determine its impact on improving quality of life, alleviating symptoms such as dyspnea, depression, and anxiety.Hypothesis:The aim is to assess the impact of palliative care interventions on the quality of life, dyspnea, anxiety, and depression in patients with HF.Methods:A systematic review and meta-analysis were conducted on clinical trials retrieved from Scopus, Cochrane, PubMed, Embase, and Web of Science databases from their inception until March 2024. Studies reporting on the impact of palliative care interventions on the quality of life of patients with HF were included. The primary outcome was the effect on quality of life, while the effects on dyspnea, depression, and anxiety were secondary outcomes. Data from the studies were pooled using RevMan V5.4, and changes in the mean difference from baseline and confidence intervals (CI) were calculated for each outcome.Results:The meta-analysis included eleven studies, predominantly randomized controlled trials, with a total of 1662 participants, 812 of whom received palliative care interventions. The analysis revealed a significant improvement in the mean change from baseline within the intervention group compared to usual care. Specifically, the quality of life showed a mean difference change from the baseline of 1.35 (95% CI: 0.88 to 1.82), anxiety improved with a mean difference change from baseline of 0.30 (95% CI: 0.03 to 0.58), and dyspnea showed a mean difference change from baseline of 1.0 (95% CI: 0.74 to 1.26). However, there was no significant difference in the mean change from baseline for depression between both groups.Conclusion:Palliative care interventions are associated with significant improvements in quality of life, anxiety, and dyspnea in patients with heart failure compared to usual care. However, there is no significant impact on depression. These findings support the integration of palliative care into the management of heart failure patients to enhance their overall well-being.
Abstract 4141513: Effect of Dapagliflozin on Cardiovascular Outcome in Patients With Acute Myocardial Infarction; a Systematic Review and Meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4141513-A4141513, November 12, 2024. Background:The beneficial effect of SGLT-2 inhibitors in managing type 2 diabetes mellitus and heart failure with reduced ejection fraction has already been established. However, the outcomes of dapagliflozin on cardiovascular events in patients with acute myocardial infarction are not well studied.Hypothesis:Our study aims to investigate the effect of dapagliflozin in reducing cardiovascular events among patients with acute myocardial infarction.Methods:A systematic search was conducted using multiple electronic databases from inception until March 2024 using the appropriate Mesh terms, “ dapagliflozin,” “SGLT 2 inhibitors,” “acute myocardial infarction,” “heart failure,” “major cardiovascular events,” “all-cause mortality.” We used the random effect model to calculate the pooled relative risk and their corresponding confidence interval. A p-value of
Abstract 4144136: Assessing the Efficacy and Safety of Olezarsen in Lowering Triglyceride Levels: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4144136-A4144136, November 12, 2024. Background:Elevated fasting serum triglyceride (TG) levels are linked to an increased risk of cardiovascular disease. Olezarsen is an inhibitor of apolipoprotein C3 (apo-C3) production with a potential to decrease TG levels and thereby, reduce the risk of cardiovascular disease.Research Question:Is olezarsen efficacious and safe in reducing the TG levels?Aim:This meta-analysis aims to evaluate the efficacy and safety of olezarsen in patients with hypertriglyceridemia.Methods:A literature search was carried out on Medline, Embase, Google Scholar, Cochrane CENTRAL, Scopus, and clinicaltrials.gov. Only randomized controlled trials (RCTs), including adult patients with hypertriglyceridemia and treated with olezarsen, were included. The primary outcome assessed was the mean change in the level of TG, whereas the secondary outcomes were changes in the apo-C3, apo-B48, and non-HDL cholesterol levels at the end of the 6-month follow-up period. Various adverse events were also assessed. Review Manager 5.4 was used to calculate standardized mean differences (SMD) with 95% confidence intervals (95% CIs) using a random effects model.Results:Three RCTs involving 334 patients in total, with 248 receiving olezarsen and 86 receiving placebo, were included. The analysis revealed that at the end of the follow up period, there was a significant change in the levels of TG (SMD -52.04, 95%CI: -64.55 to -39.52; p
Abstract 4131100: Effect of metabolic surgery on cardiovascular outcomes in people with obesity and pre-existing cardiovascular disease: A systematic review and meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4131100-A4131100, November 12, 2024. Background:Previous literature shows that metabolic surgery effectively decreases the risk of cardiovascular disease (CVD) events in patients with obesity. The use of metabolic surgery has, however, been limited in people with obesity and pre-existing CVD due to concerns of poor post-operative cardiovascular outcomes. This study aims to determine the effectiveness and safety of metabolic surgery in patients with pre-existing CVD.Methods:A search of electronic databases, PubMed, Cochrane Central and SCOPUS was conducted from their inception till May 2024. The study was conducted adhering to the PRISMA guidelines. Outcomes of interest were risk of all-cause mortality, major adverse cardiovascular events (MACE), risk of myocardial infarction (MI), and cerebrovascular events in patients with and without prior CVD undergoing bariatric surgery. Data was pooled as generic inverse variance using a random effects model, and presented as hazard ratios (HR) with their 95% confidence intervals (CI).Results:We included four studies in our analysis (n = 5,244). Our pooled analysis shows that metabolic surgery leads to significant reduction in risk of all-cause mortality (HR = 0.51, 95% CI: [0.42, 0.61]; p
Abstract 4145951: Mortality in Cardiac Amyloidosis: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4145951-A4145951, November 12, 2024. Background:Cardiac amyloidosis is an underdiagnosed cause of heart failure. The mean survival rate without treatment is low, signifying the importance of early diagnosis. The prognosis depends on the time of diagnosis and the severity of the disease before recognition and treatment. We performed a systematic review to evaluate patient characteristics and mortality in individuals with cardiac amyloidosis.Methods:PubMed, Scopus and Cochrane were systematically searched from the database inception to May 2024 to evaluate for mortality outcomes in patients with cardiac amyloidosis. The statistical analysis was performed using R-Studio software, and proportions with 95% confidence intervals (CI) were calculated using a random-effects model. The Kaplan Meier survival plots was also plotted for eligible studies.Results:Eighteen studies involving 7,268 patients were included. Patients with cardiac amyloidosis mostly presented with dyspnea and peripheral edema. Among the electrocardiographic abnormalities, atrial fibrillation was observed in 31.1% of patients, whereas atrioventricular block was observed in 6.2% of patients. Furthermore, 37.2% of patients experienced heart failure, 36.3% experienced reduced ejection fraction, and 3.2% of patients experienced cardiogenic shock. Majority of the patients were found to have an increase in left ventricular wall thickness (77.8%). The mortality associated with cardiac amyloidosis varied from 0% to 100%, with a summary estimate rate of 54% (95% CI: 31% to 77%). The median survival rate for 50% patients was around 2 weeks, which declined significantly over the next one week resulting into the cumulative survival of over only 21 days.Conclusion:Our results highlight the importance of considering cardiac amyloidosis in the differential diagnosis of all patients with heart failure or non-ischemic cardiomyopathy, particularly when there is an increase in ventricular wall thickness. Our review revealed a high mortality rate associated with cardiac amyloidosis. Early diagnosis and better therapeutic modalities have the potential to improve patient outcomes and reduce mortality rates.
Abstract 4145225: Sodium Glucose Cotransporter 2 Inhibitors After Acute Myocardial Infarction: An updated systematic review and meta-analysis.
Circulation, Volume 150, Issue Suppl_1, Page A4145225-A4145225, November 12, 2024. Background:Sodium-glucose co-transporter two inhibitors (SGLT2i) have recently been included in heart failure (HF) guidelines due to their benefits in reducing mortality and hospitalization rates. However, the benefits of SGLT2i in patients with post-acute myocardial infarction (MI) remain controversial. Therefore, we aim to perform an updated systematic review and meta-analysis comparing SGLT2i with placebo in patients after an acute MI.Methods:We performed a systematic review and meta-analysis to determine the impact of SLGT2i in patients with post-acute MI with or without diabetes type II (DM II). We systematically searched Pubmed, Cochrane, and Embase for randomized controlled trials (RCTs) comparing SGLT2i and placebo in patients following an acute MI. The primary outcome assessed was (1) HF hospitalization. In this analysis, we also included the following secondary outcomes:(2) cardiovascular (CV) mortality and (3) MI recurrence. Risk Ratios(RRs) with 95% confidence interval (CI) were pooled across studies using a random effect model.Results:Our meta-analysis included ten RCTs comprising 25908 patients, of whom 14098 (54.4%) received SGLT2i therapy and 15078 (58.2%) had type II diabetes. The mean age was 62 years, and the mean follow-up was 21.2 months. In the pooled analysis, HF hospitalization was significantly lower in the SGLT2is group (RR 0.76; 95%CI 0.68,0.84; p
Abstract 4148117: Efficacy of TRISCORE in predicting the long-term survival in patients undergoing transcatheter tricuspid valve replacement or surgical tricuspid valve replacement: a systematic review and meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4148117-A4148117, November 12, 2024. Background:Tricuspid regurgitation (TR) is a prevalent disease in the population and is usually progressive. Most patients are treated with conservative management due to the risk involving transcatheter tricuspid valve replacement (TTVR) and surgical tricuspid valve replacement (STVR). The TRI-SCORE was developed to evaluate the severity of patients with TR and their risk of undergoing a correction procedure. However, there is still controversy regarding the cutoff value of the score. Therefore, we aim to perform a systematic review and meta-analysis comparing the cutoffs ≥6 with =6 with
Abstract 4144446: Efficacy and Safety of Empagliflozin after Acute Myocardial Infarction: A Systematic Review and Meta Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4144446-A4144446, November 12, 2024. Introduction:Empagliflozin, a sodium–glucose co-transporter-2 (SGLT-2) inhibitor, improves cardiovascular outcomes in patients with heart failure (HF) with or without diabetes mellitus. However, limited data is available regarding its impact after acute myocardial infarction (AMI). Therefore, we aimed in our meta-analysis to evaluate the safety and efficacy of empagliflozin after AMI.Methods:We searched PubMed, Scopus, Cochrane Library, and Web of Science from inception to April 19th, 2024, to identify any Randomized Controlled trials (RCTs) that compare empagliflozin to placebo after AMI. The safety outcomes were presented as short term cardiovascular mortality, all-cause mortality, hospitalization for heart failure (HF), and any adverse events. The efficacy outcomes were reported as NT-proBNP, systolic blood pressure (SBP), diastolic blood pressure (DBP), and LDL-c. Dichotomous outcomes were pooled in the form of risk ratio (RR), and continuous outcomes in form of mean difference (MD), with the corresponding 95% confidence intervals (CI).Results:Ten RCTs with a total of 10,697 patients were included. Empagliflozin was associated with significant lower risk of cardiovascular mortality (RR = 0.57, 95% CI [0.46, 0.71]), all cause mortality, and hospitalization for heart failure, (RR=0.64, 95% CI [0.53, 0.79]), (RR = 0.67, 95% CI [0.58, 0.79]), respectively. Furthermore, empagliflozin demonstrated a significant reduction in both NT-proBNP (MD = -161.26, 95% CI [-294.58, -27.93]) and SBP (MD= -8.59, 95% CI [-13.26, -3.93]). However, there is no difference between the two groups in terms of any adverse events, diastolic blood pressure, and LDL-c, (RR=0.98, 95% CI [0.95, 1.02]), (MD = -2.55, 95% CI [-5.31,0.20]), (MD=1.67, 95% CI [-6.11, 9.46]), respectively.Conclusion:Our meta analysis reveals that empagliflozin significantly reduce all major cardiovascular outcomes after AMI such as cardiovascular mortality and hospitalization due to heart failure. Moreover, empagliflozin effectively lowers NT-proBNP levels and SBP with no superiority in terms of adverse events, diastolic blood pressure and LDL-c.
Abstract 4142086: Efficacy And Safety Of Inhaled Nitric Oxide In Pediatric Cardiac Surgery: A Systematic Review And Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4142086-A4142086, November 12, 2024. Background:Congenital heart diseases affect one in every 100 live births. Surgical intervention is necessary for almost half of these cases, with a significant proportion requiring surgery within the first year after birth. This meta-analysis aims to evaluate the efficacy and safety of inhaled nitric oxide (iNO), selective pulmonary vasodilator, particularly its impact on perioperative clinical outcomes such as low cardiac output syndrome (LCOS), duration of mechanical ventilation, blood and fresh frozen plasma (FFP) transfusion, ICU stay, and hospital stay.Methods:We conducted a comprehensive search of PubMed, Scopus, WOS, and Cochrane databases for relevant studies from inception to April 1, 2024. We included randomized controlled trials (RCTs) comparing iNO with placebo or standard care in pediatric patients undergoing cardiopulmonary bypass. Data extraction and quality assessment were performed according to PRISMA guidelines and Cochrane’s risk of bias tool. Mean differences (MD) and their 95% confidence intervals (CI) were calculated using OpenMeta [Analyst].Results:We included six RCTs in our meta-analysis. Our analysis showed that iNO significantly reduced the duration of mechanical ventilation (MD = -5.733, 95% CI [-10.494; -0.972]). However, no significant differences were observed between the iNO group and the control group for hospital stay, ICU stay, or incidence of LCOS. Safety outcomes showed no significant differences in blood or platelet transfusion rates, though iNO was associated with statistically significant lower FFP transfusion (MD = -5.199, 95% CI [-8.032; -2.366]).Conclusion:our review and meta-analysis highlights the potential benefits of iNO in reducing ventilation time and FFP transfusion in pediatric patients undergoing cardiac surger, while also emphasizing the need for further research to conclusively determine its impact on other clinical outcomes and safety parameters.
Abstract 4142197: Abbreviated Ticagrelor-Based Dual Antiplatelet Therapy in Acute Coronary Syndrome: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4142197-A4142197, November 12, 2024. Introduction:Few randomized clinical trials (RCTs) have evaluated the safety and efficacy of abbreviated Ticagrelor-based dual antiplatelet therapy (DAPT) in acute coronary syndrome (ACS); however, these RCTs were underpowered to detect differences in hard clinical outcomes.Research Question:What effect does abbreviated Ticagrelor-based DAPT have on risk of ischemic and bleeding events in ACS?Methods:A systematic search of MEDLINE, Cochrane, and Scopus databases was performed through 05/2024, for trials that compared abbreviated (≤ 3-months) versus standard 12-months Ticagrelor-based DAPT in ACS. The primary endpoint was all-cause mortality. Endpoints were measured at 12-months after DAPT initiation. Data were pooled using random-effects model. Heterogeneity was assessed via Chi-squared and Higgin’s I2test. RevMan 5.0 (Cochrane Collaboration, Oxford, United Kingdom) was utilized to perform statistical analysis.Results:Five trials were included in this analysis with 21,407 patients assessed. ULTIMATE-DAPT, T-PASS, and GLOBAL LEADERS-ACS assessed 1-month DAPT duration while TICO and TWILIGHT-ACS assessed 3-months DAPT duration. The average age was 62.7 years and 22.7% were women. Hypertension (61.7%), dyslipidemia (49.9%), diabetes (27.8%), and chronic kidney disease (12.7%) were the most common comorbidities. ACS presentations included NSTEMI (40.1%), unstable angina (35.2%), and STEMI (31.5%). Abbreviated Ticagrelor-based DAPT was associated with lower risk of all-cause mortality (RR 0.78; 95% CI 0.62-0.98, I2=0%) compared with standard duration DAPT. There was no differences between groups in cardiovascular death (RR 0.65; 95% CI 0.41-1.03, I2=0%), myocardial infarction (RR 1.04; 95% CI 0.85-1.27, I2=0%), stent thrombosis (RR 0.97; 95% CI 0.64-1.45, I2=0%), or ischemic stroke (RR 0.90; 95% CI 0.62-1.30, I2=0%). Abbreviated DAPT duration was associated with lower risk of major bleeding (RR 0.50; 95% CI 0.38-0.66, I2=46%).Conclusion:Our analysis includes the totality of randomized data evaluating the merits of abbreviated Ticagrelor-based DAPT after ACS. The salient study finding was the observed reduced risk of all-cause mortality with abbreviated DAPT approach, which was driven by reduced bleeding risk.
Abstract 4148133: Association between small pre-implant left ventricular end diastolic diameter and post left ventricular assist device implantation all-cause mortality: A systematic review and meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4148133-A4148133, November 12, 2024. Background:Left ventricular assist devices (LVADs) are crucial for the management of advanced heart failure patients acting, both as a bridge to heart transplant or destination therapy. Existing studies revealed mixed results on the impact of pre-implant left ventricular end-diastolic diameter (LVEDD) on post-LVAD mortality. Some studies found smaller LVEDD increases mortality, while others revealed no significant impact. Due to the limited evidence, this meta-analysis aims to determine the association between pre-LVEDD and post-LVAD implantation mortality through a systematic review and meta-analysis.Method:We systematically reviewed articles until May 2024 examining the association between pre-implant LVEDD and post-LVAD implantation mortality using PubMed, Google Scholar, Embase, and Scopus. A random effects model was used to calculate the pooled adjusted odds ratio (aOR). We used I2statistics to determine the heterogeneity of studies. Leave-one-out sensitivity analysis was done to evaluate each study’s effect on the overall estimate, with statistical significance set at p
Abstract 4138277: Protamine Administration and Bleeding Risk Following Transcatheter Aortic Valve Implantation: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4138277-A4138277, November 12, 2024. Background:Bleeding risk is a major concern for patients receiving transcatheter aortic valve implantation (TAVI) due to heparin use. In recent studies, Heparin antagonists, such as protamine, have shown potential in mitigating this complication. We aim to evaluate its potential role in reducing the risk of bleeding in patients post-TAVI.MethodsOn March 18, 2024, related articles were searched in the following databases: PubMed, Embase, Scopus, Web of Science, Cochrane Library, Wiley Library, VHL, Google Scholar, and clinicaltrials.gov. The inclusion criteria consisted of studies that reported the use of protamine in patients who underwent TAVI, with the aim of reducing bleeding risk compared to administering a placebo or no treatment. Our primary outcomes included major bleeding, life-threatening bleeding, the need for blood transfusion, the 30-day mortality rate, and any events of stroke or transient ischemic attack (TIA). The effect size was calculated using the odds ratio with a 95% confidence interval. Meta-analysis was conducted based on random-effect model using Revman.ResultsOut of the 14,705 articles we obtained, only 5 papers were included. One was a randomized controlled trial; the remaining 4 were observational cohorts with control groups. These studies comprised a total of 3,502 patients. Protamine significantly reduced major bleeding (OR 0.44, 95% CI 0.29-0.69, p = 0.0003, I2= 37%), especially with full-dose administration (1 mg/100 U UFH) compared to partial-dose administration (0.5 mg/100 U UFH) (OR 0.38, 95% CI 0.25-0.58, p < 0.00001, I2= 0%). Similarly, protamine significantly reduced life-threatening bleeding (OR 0.37, 95% CI 0.20-0.67, p = 0.001, I2= 4%), particularly with full-dose usage compared to partial-dose (OR 0.37, 95% CI 0.18-0.73, p = 0.004, I2= 0%). However, no significant difference was observed in the need for blood transfusion (OR 0.75, 95% CI 0.46-1.24, p = 0.27, I2= 33%), stroke/TIA risk (OR 0.82, 95% CI 0.41-1.61, p = 0.56, I2= 49%), or 30-day mortality (OR 0.93, 95% CI 0.62-1.39, p = 0.73, I2= 0%).ConclusionsThe use of protamine appears to significantly reduce major and life-threatening bleeding. The need for blood transfusion, risk of stroke or TIA, and 30-day mortality did not show significant differences. These findings suggest that protamine may be an effective intervention for reducing bleeding complications post-TAVI. However, large randomized controlled trials are needed to validate these findings.
Abstract 4140260: Efficacy and Safety of Radiofrequency-Based Renal Denervation on Resistant Hypertensive Patients: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4140260-A4140260, November 12, 2024. Introduction:New therapies for resistant hypertension (RH), including renal denervation (RDN), have been studied.Aim:Access the safety and effectiveness of radiofrequency-based RDN vs pharmacological treatment for RH.Methods:A thorough literature search was conducted across PubMed, EMBASE, and the Cochrane databases, focusing on studies that compared the effects of radiofrequency-based RDN versus pharmacological treatment for RH. Treatment effects for binary and continuous endpoints were pooled and used, respectively, odds-ratio (OR) and mean differences (MD) with 95% confidence intervals (CI) to analyze continuous outcomes.Results:All the 10 included studies were randomized controlled trials, they involved 1.182 patients, and 682 received radiofrequency-based RDN. The follow-up period ranged from 6 to 84 months. Analysis revealed that the RDN group had a significant reduction in office systolic blood pressure (BP) (MD: -9.5 mmHg; 95% CI: -16.81 to -2.29; P=0.01), office diastolic BP (MD: -5.1 mmHg; 95% CI: -8.42 to -2.80; P