Disproportionately High Aortic Valve Calcium Scores in Atrial Fibrillation: Implications for Transcatheter Aortic Valve Replacement.

AIMS: Doppler mean gradient (MG) can underestimate aortic stenosis (AS) severity in patients with atrial fibrillation (AF) compared to patients in sinus rhythm (SR), potentially delaying intervention in AF. This study compared outcomes in patients with AF and SR following transcatheter aortic valve replacement (TAVR) and investigated delay in TAVR based on computed tomography aortic valve calcium score (AVCS). METHODS AND RESULTS: Patients who underwent TAVR from 2013 to 2017 for native valve severe AS were identified from an institutional database. Baseline characteristics and overall survival were compared between those in SR and AF. There were 820 patients (mean age 81 years; 41.6% female) included. AF was present in 356 patients. Patients in AF were older (82.2 vs. 80.5, p = 0.003), had lower MG compared to SR patients (42.0 vs. 44.9, p = 0.002) with similar indexed aortic valve area (0.4 vs. 0.4, p = 0.17). Median AVCS was higher in AF (males: AF 2850.0 vs. SR 2561.0, p = 0.044; females: AF 1942.0 vs. SR 1610.5, p = 0.025). Projected AVCS assuming same age of diagnosis was similar between AF and SR. Median survival post-TAVR was worse in AF compared to SR (3.2 vs 5.4 years, log rank p < 0.001). AF, lower MG, higher RVSP, dialysis, diabetes, and significant TR were associated with higher mortality (p < 0.05 for all). CONCLUSION: Older age and higher AVCS in patients with AF compared to SR suggests that AS was both underestimated and more advanced at TAVR referral.

An Evidence-Based Approach to Anticoagulation Therapy Comparing Direct Oral Anticoagulants and Vitamin K Antagonists in Patients With Atrial Fibrillation and Bioprosthetic Valves: A Systematic Review, Meta-Analysis, and Network Meta-Analysis.

Direct oral anticoagulants (DOACs) are a newer class of anticoagulants that inhibit factor Xa or factor IIa and include drugs such as rivaroxaban, apixaban, edoxaban, betrixaban, and dabigatran. Although vitamin K antagonists (VKAs) have been traditionally used to prevent thromboembolic events, DOACs have gained popularity because of their faster onset and offset of action and reduced need for monitoring. This study aimed to provide more data for anticoagulants in patients with atrial fibrillation with bioprosthetic heart valves by incorporating all available trials to date. A search was performed across 5 electronic databases to identify relevant studies. We analyzed the data using a pooled risk ratio for categorical outcomes and used the I2 test to determine heterogeneity. The quality of randomized controlled trials was assessed using the Cochrane risk of bias assessment tool, and the National Institutes of Health tool was used for observational studies. Our study included a frequentist network meta-analysis (MA) of the aggregate data to obtain the network estimates for the outcomes of interest. We retrieved 28 studies with a total of 74,660 patients with bioprosthetic heart valves. Our MA significantly showed that DOACs decrease the risk of all-cause bleeding (risk ratio [RR] 0.80, 95% confidence interval [CI] 0.75 to 0.85, p >0.00001), stroke and systemic embolization (RR 0.89, 95% CI 0.80 to 0.99, p = 0.03), and intracranial bleeding outcomes (RR 0.62, 95% CI 0.45 to 0.86, p = 0.004) compared with VKA. In contrast, there was no significant difference between the compared groups in major bleeding (RR = 0.92, 95% CI 0.84 to 1.02, p = 0.10) and all-cause mortality outcomes (RR = 0.96, 95% CI 0.85 to 1.07, p = 0.43), respectively. In addition, the network MA results did not favor any of the studied interventions over each other (p <0.05) regarding all-cause bleeding, mortality, stroke and systemic embolization, and major bleeding outcomes. In conclusion, our study found that DOACs are more effective in reducing the risk of bleeding, stroke, systemic embolism, and intracranial bleeding than VKAs. However, no significant difference was observed in the incidence of gastrointestinal bleeding, major bleeding, thromboembolic events, and all-cause mortality. In addition, our network MA did not identify any specific DOAC treatment as more favorable than others.

Transcatheter Aortic Valve Replacement: Variations in Use, Charges, and Geography in the United States.

The use of transcatheter aortic valve replacement (TAVR) in the United States has been increasing but with variability. We used a 100% sample of Medicare beneficiaries (MBs), from the Centers for Medicare and Medicaid Services database, who underwent TAVR by cardiologists between 2015 and 2019. We stratified data by geographic region, rural/urban areas, and provider's gender. We examined the average number of TAVRs performed per 100,000 MBs, the average number of TAVRs performed per individual cardiologist, and the average submitted charge (ASC) per procedure. The number of TAVR per 100,000 MBs was significantly variable among regions in all years (all P≤0.028), except in 2015 (P=0.103), with the highest rates being in the Northeast and the lowest being in the West. The number of TAVRs per cardiologist was significantly different among regions only in 2019 (P=0.04), with the Northeast showing the highest numbers and the South showing the lowest. The ASC was also significantly variable among regions in all years (all P≤0.01). The highest ASC was in the Midwest for all years, whereas the lowest was in the West in 2015 to 2016 and in the South in 2017 to 2019. In all years, the number of TAVRs per cardiologist was higher in urban areas than in rural areas (all P<0.05); however, rural cardiologists had higher ASCs (all P<0.05). The number of TAVR procedures per cardiologist was not significantly different between male and female cardiologists (all P>0.1). Female cardiologists had a significantly higher ASC only in 2015 (P=0.034). In conclusion, there are variations in TAVR use and charges for MBs according to geographic, urban, and rural regions and the performing cardiologist's gender.

The impact of moderate aortic stenosis in acute myocardial infarction: A multicenter retrospective study.

BACKGROUND: Aortic stenosis (AS) is associated with myocardial ischemia through different mechanisms and may impair coronary arterial flow. However, data on the impact of moderate AS in patients with acute myocardial infarction (MI) is limited. AIMS: This study aimed to investigate the impact of moderate AS in patients presenting with acute myocardial infarction (MI). METHODS: We conducted a retrospective analysis of all patients who presented with acute MI to all Mayo Clinic hospitals, using the Enterprise Mayo PCI Database from 2005 to 2016. Patients were stratified into two groups: moderate AS and mild/no AS. The primary outcome was all cause mortality. RESULTS: The moderate AS group included 183 (13.3%) patients, and the mild/no AS group included 1190 (86.7%) patients. During hospitalization, there was no difference between both groups in mortality. Patients with moderate AS had higher in-hospital congestive heart failure (CHF) (8.2% vs. 4.4%, p = 0.025) compared with mild/no AS patients. At 1-year follow-up, patients with moderate AS had higher mortality (23.9% vs. 8.1%, p < 0.001) and higher CHF hospitalization (8.3% vs. 3.7%, p = 0.028). In multivariate analysis, moderate AS was associated with higher mortality at 1-year (odds ratio 2.4, 95% confidence interval [1.4-4.1], p = 0.002). In subgroup analyses, moderate AS increased all-cause mortality in STEMI and NSTEMI patients. CONCLUSION: The presence of moderate AS in acute MI patients was associated with worse clinical outcomes during hospitalization and at 1-year follow-up. These unfavorable outcomes highlight the need for a close follow-up of these patients and for timely therapeutic strategies to best manage these coexisting conditions.

Prediction of permanent pacemaker implantation after transcatheter aortic valve replacement: The role of machine learning.

BACKGROUND: Atrioventricular block requiring permanent pacemaker (PPM) implantation is an important complication of transcatheter aortic valve replacement (TAVR). Application of machine learning could potentially be used to predict pre-procedural risk for PPM. AIM: To apply machine learning to be used to predict pre-procedural risk for PPM. METHODS: A retrospective study of 1200 patients who underwent TAVR (January 2014-December 2017) was performed. 964 patients without prior PPM were included for a 30-d analysis and 657 patients without PPM requirement through 30 d were included for a 1-year analysis. After the exclusion of variables with near-zero variance or ≥ 50% missing data, 167 variables were included in the random forest gradient boosting algorithm (GBM) optimized using 5-fold cross-validations repeated 10 times. The receiver operator curve (ROC) for the GBM model and PPM risk score models were calculated to predict the risk of PPM at 30 d and 1 year. RESULTS: Of 964 patients included in the 30-d analysis without prior PPM, 19.6% required PPM post-TAVR. The mean age of patients was 80.9 ± 8.7 years. 42.1 % were female. Of 657 patients included in the 1-year analysis, the mean age of the patients was 80.7 ± 8.2. Of those, 42.6% of patients were female and 26.7% required PPM at 1-year post-TAVR. The area under ROC to predict 30-d and 1-year risk of PPM for the GBM model (0.66 and 0.72) was superior to that of the PPM risk score (0.55 and 0.54) with a P value < 0.001. CONCLUSION: The GBM model has good discrimination and calibration in identifying patients at high risk of PPM post-TAVR.

Developing an Echocardiography-Based, Automatic Deep Learning Framework for the Differentiation of Increased Left Ventricular Wall Thickness Etiologies.

AIMS: Increased left ventricular (LV) wall thickness is frequently encountered in transthoracic echocardiography (TTE). While accurate and early diagnosis is clinically important, given the differences in available therapeutic options and prognosis, an extensive workup is often required to establish the diagnosis. We propose the first echo-based, automated deep learning model with a fusion architecture to facilitate the evaluation and diagnosis of increased left ventricular (LV) wall thickness. METHODS AND RESULTS: Patients with an established diagnosis of increased LV wall thickness (hypertrophic cardiomyopathy (HCM), cardiac amyloidosis (CA), and hypertensive heart disease (HTN)/others) between 1/2015 and 11/2019 at Mayo Clinic Arizona were identified. The cohort was divided into 80%/10%/10% for training, validation, and testing sets, respectively. Six baseline TTE views were used to optimize a pre-trained InceptionResnetV2 model. Each model output was used to train a meta-learner under a fusion architecture. Model performance was assessed by multiclass area under the receiver operating characteristic curve (AUROC). A total of 586 patients were used for the final analysis (194 HCM, 201 CA, and 191 HTN/others). The mean age was 55.0 years, and 57.8% were male. Among the individual view-dependent models, the apical 4-chamber model had the best performance (AUROC: HCM: 0.94, CA: 0.73, and HTN/other: 0.87). The final fusion model outperformed all the view-dependent models (AUROC: HCM: 0.93, CA: 0.90, and HTN/other: 0.92). CONCLUSION: The echo-based InceptionResnetV2 fusion model can accurately classify the main etiologies of increased LV wall thickness and can facilitate the process of diagnosis and workup.

Meta-Analysis on Transcarotid Versus Transfemoral and Other Alternate Accesses for Transcatheter Aortic Valve Implantation.

Transcarotid access has emerged as the preferred access site for transcatheter aortic valve implantation (TAVI) in patients with prohibitive iliofemoral anatomy. This study aimed to compare outcomes with transcarotid with those of other accesses in patients who underwent TAVI. Cochrane, EMBASE, and MEDLINE databases were searched for all published studies that compared outcomes with transcarotid with those of other accesses (transfemoral, transaxillary/subclavian, transaortic, and transapical) in patients who underwent TAVI. The primary outcome was all-cause mortality. Secondary outcomes included major bleeding, major vascular complications, stroke, myocardial infarction, permanent pacemaker implantation, and peri-aortic valve insufficiency. We included 22 observational studies with a total of 11,896 patients. Outcomes were reported during hospitalization and at 1-month follow-up. The transcarotid approach had higher mortality at 1 month (3.7% vs 2.6%, p = 0.02) but lower major vascular complications during hospitalization (1.5% vs 3.4%, p = 0.04) than did transfemoral access. The transcarotid approach had lower major vascular complications (2% vs 2.3%, p = 0.04) than did the transaxillary/subclavian but higher major bleeding (5.3% vs 2.6%, p = 0.03). The transaortic approach was associated with higher in-hospital (11.7% vs 1.9%, p = 0.02) and 1-month mortality (14.4% vs 3.9%, p = 0.007) rates than was transcarotid access. The transcarotid approach numerically reduced mortality and the risk of major vascular complications and major bleeding compared with the transapical approach; however, this did not reach statistical significance. The transcarotid approach did not increase the risk of stroke compared with transfemoral or the other alternative accesses. In conclusion, the transcarotid or transaxillary/subclavian approach had associated comparable outcomes that were better than those of the transapical and transaortic approaches. There was no difference in stroke risk between transcarotid access and other accesses.

Impact of Persistent Iatrogenic Atrial Septal Defect following MitraClip.

BACKGROUND: Prior studies have reported conflicting results of persistent iatrogenic atrial septal defect (iASD) and its impact following a transcatheter edge-to-edge repair (TEER) procedure. This study aims to evaluate the incidence of iASD and its clinical and hemodynamic impact after a TEER. METHODS: Consecutive patients who underwent a TEER procedure from June 2014 to September 2020 at the Mayo Clinic were identified. The presence of iASD was retrospectively identified on post-procedure transthoracic echocardiography (TTE) to group patients into an iASD+ group and an iASD- group for comparison of prognosis and cardiac function. RESULTS: A total of 316 patients were included; the mean age was 79.1 ± 9.1 years, and 67.7% were male. Persistent iASD was diagnosed in 108 (34.2%) patients. There was no difference concerning all-cause mortality, heart failure hospitalization, and stroke/TIA between groups at follow-up (median follow-up of 9 months). Post-procedure TTE demonstrated no differences regarding right ventricle (RV) and left ventricle (LV) dimensions and function, including TAPSE (15.2 ± 4.6 vs. 15.4 ± 5.5 mm, p = 0.875), and LV ejection fraction (51.1 ± 14.0% vs. 51.3 ± 13.9%, p = 0.933). However, patients with iASD had higher RV systolic pressure (48.7 ± 14.4 vs. 45.5 ± 14.5 mmHg, p = 0.042) compared with patients without iASD. CONCLUSION: Notwithstanding higher RV pressures, patients with persistent iASD had no hemodynamic compromise and an equal prognosis compared with those without a residual atrial defect after a TEER procedure. These findings support the mid-term safety of procedures in which an interatrial defect needs to be created and would argue against the need for interventional closure.

Outcomes with catheter-directed thrombolysis compared with anticoagulation alone in patients with acute deep venous thrombosis.

OBJECTIVE: The authors aimed to investigate the benefits and risks of catheter-directed thrombolysis (CDT) in acute deep venous thrombosis (DVT). BACKGROUND: The role of CDT in the management of DVT is evolving. Data on CDT versus anticoagulation alone in acute DVT is sparse. METHODS: We performed a systematic review and meta-analysis of published studies that compared CDT to anticoagulation alone in patients with acute DVT. RESULTS: We included 11 studies (four randomized control trials [RCTs] and seven observational studies) with a total of 8,737 patients. During hospital stay, patients who received CDT had higher odds of major bleeding (2.5% vs. 1.6%; OR 1.46, 95% CI [1.07, 1.98], p = .02), blood transfusion (10.8% vs. 6.2%; OR 1.8, 95% CI [1.52, 2.13], p < .001), and thromboembolism (15.5% vs. 10%; OR 1.67, 95% CI [1.47, 1.91], p < .001) compared with anticoagulation alone. At 6-month follow-up, patients who received CDT had higher venous patency (71.1% vs. 37.7%; OR 5.49, 95% CI [2.63, 11.5], p < .001) and lower postthrombotic syndrome (PTS; 27% vs. 40.7%; OR 0.44, 95% CI [0.22, 0.86], p = .02). During a mean follow-up duration of 30.5 ± 28 months, CDT group continued to have higher venous patency (79.6% vs. 71.8%; OR 3.79, 95% CI [1.54, 9.32], p = .004) and lower PTS (44.7% vs. 50.5%; OR 0.43, 95% CI [0.23, 0.78], p = .006), but no difference in thromboembolism. CONCLUSION: Compared with anticoagulation alone, CDT for patients with acute DVT was associated with a higher risk of complications, but a higher rate of venous patency and lower risk of postthrombotic syndrome at 2.5 years follow-up.

Transulnar Versus Transradial Access for Coronary Angiography and Percutaneous Coronary Intervention: A Meta-Analysis of Randomized Controlled Trials.

OBJECTIVES: To compare the outcomes of transulnar access (TUA) versus transradial access (TRA) for coronary angiography (CA) and percutaneous coronary intervention (PCI). BACKGROUND: TUA has emerged as an alternative access site in patients who fail TRA or not candidates for it. Data comparing both approaches have been limited. METHODS: We performed a systematic review and meta-analysis of randomized controlled trials (RCTs) that compared outcomes of TUA versus TRA for CA and/or PCI. RESULTS: Data from seven RCTs, with 5721 patients (TUA = 2874 and TRA = 2847), were analyzed. TUA, compared with TRA, was associated with a similar risk of major adverse cardiovascular and cerebrovascular events (MACCE) (3.05% vs. 3.32%, OR 0.9, 95% CI [0.65, 1.25]; P = 0.53), access cross-over rate (9.4% vs. 4.1%, OR 1.92, 95% CI [0.91, 4.06]; P = 0.09), access-site complications (12.7% vs. 13%, OR 0.97, 95% CI [0.79, 1.19]; P = 0.75), vasospasm (8.1% vs. 9%, OR 0.83, 95% CI [0.54, 1.27]; P = 0.38), procedural time (MD 1.34 min, 95% CI [-1.31, 3.99]; P = 0.32) and fluoroscopy time (MD 0.29 min, 95% CI [-0.33, 0.91]; P = 0.36). Additional analysis of patients who underwent PCI showed no difference in the incidence of MACCE, access-site complications and large hematoma. The risk of local bleeding was lower in the TUA group compared with TRA (4.9% vs. 8.5%, OR 0.55, 95% CI [0.33, 0.93]; P = 0.02). CONCLUSION: TUA is a safe approach in both CA and PCI with comparable outcomes to TRA. PCI with TUA might be associated with a lower risk of local bleeding compared with TRA.

Short- and Long-Term Outcomes in Patients With New-Onset Persistent Left Bundle Branch Block After Transcatheter Aortic Valve Replacement.

BACKGROUND: The impact of new-onset persistent left bundle branch block (LBBB) after transcatheter aortic valve replacement (TAVR) on all-cause mortality has been controversial. METHODS: We conducted a systematic review and meta-analysis of eleven studies (7398 patients) comparing the short- and long- outcomes in patients who had new-onset LBBB after TAVR vs. those who did not. RESULTS: During a mean follow-up of 20.5±14months, patients who had new-onset persistent LBBB after TAVR had a higher incidence of all-cause mortality (29.7% vs. 23.6%; OR 1.28 (1.04-1.58), p=0.02), rehospitalization for heart failure (HF) (19.5% vs. 17.3%; OR 1.4 (1.13-1.73), p=0.002), and permanent pacemaker implantation (PPMi) (19.7% vs. 7.1%; OR 2.4 (1.64-3.52), p<0.001) compared with those who did not. Five studies (4180 patients) reported adjusted hazard ratios (HR) for all-cause mortality; new LBBB remained associated with a higher risk of mortality (adjusted HR 1.43 (1.08-1.9), p<0.01, I2=81%). CONCLUSION: Post-TAVR persistent LBBB is associated with higher PPMi, HF hospitalizations, and all-cause mortality. While efforts to identify patients who need post-procedural PPMi are warranted, more studies are required to evaluate the best follow-up and treatment strategies, including the type of pacing device if required, to improve long-term outcomes in these patients.

Ischemic Stroke With Cerebral Protection System During Transcatheter Aortic Valve Replacement.

OBJECTIVES: The objective of this study was to evaluate in-hospital outcomes with use of the Sentinel cerebral protection system (CPS) in transcatheter aortic valve replacement (TAVR). BACKGROUND: The role of the Sentinel CPS in preventing clinical ischemic stroke has been controversial. METHODS: The Nationwide Inpatient Sample database from the last three quarters of 2017, after the approval of the Sentinel CPS device, was queried to identify hospitalizations for TAVR. A 1:2 propensity score-matched analysis to compare in-hospital outcomes with versus without use of the CPS. The primary outcome was the occurrence of ischemic strokes. RESULTS: A total of 36,220 weighted discharges of patients who underwent TAVR (525 with the CPS and 35,695 without) were identified. The overall percentages of ischemic and hemorrhagic strokes were 2.4% and 0.2%, respectively. After propensity score matching (525 CPS, 1,050 no CPS), the risk for ischemic stroke was lower with use of the CPS (1 % vs. 3.8%, odd ratio [OR]: 0.243 (95% confidence interval: 0.095 to 0.619); p = 0.003). The cost of the index hospitalization was higher with use of the CPS ($47,783 vs. $44,578; p = 0.002). In multivariate regression analysis, use of the CPS was independently associated with a lower risk for ischemic stroke (OR: 0.380; 95% confidence interval: 0.157 to 0.992; p = 0.032). CONCLUSIONS: Use of the Sentinel CPS in patients undergoing TAVR is associated with a lower incidence of ischemic stroke and in-hospital mortality, without an increased risk for procedural complications but with an increased cost of the index hospitalization.

Outcomes with Drug-Coated Balloons in Percutaneous Coronary Intervention in Diabetic Patients.

BACKGROUND: Percutaneous coronary intervention (PCI) in patients with diabetes mellitus (DM) remains associated with inferior clinical outcomes and an increased risk of restenosis compared with non-diabetics even in the era of drug-eluting stents (DES). The outcomes with drug-coated balloons (DCBs) in diabetic patients have received limited study. METHODS: We performed a meta-analysis of all studies published between January 2000 and January 2019 reporting the outcomes with DCB vs. DES after PCI of de-novo coronary lesions in diabetic patients. Outcomes included major adverse cardiovascular events (MACE), target lesion revascularization (TLR), binary restenosis by quantitative coronary angiography (QCA), and late lumen loss (LLL). RESULTS: Three studies with 378 patients (440 lesions) were included in the meta-analysis. During 17.3 ±â€¯11.3 months follow-up, DCB were associated with a similar risk of MACE (OR: 0.63, 95% CI [0.36, 1.12], p = 0.11), TLR (OR: 0.51, 95% CI [0.25, 1.06] p = 0.07), binary restenosis (OR: 0.42, 95% CI [0.09, 1.92], p = 0.26), and LLL (mean difference: -0.13 mm, 95% CI [-0.41, 0.14], p = 0.34) compared with DES. CONCLUSION: In diabetic patients with de-novo coronary lesions undergoing PCI, DCBs are associated with similar outcomes compared with first-generation DES, with a signal toward potential benefit in lowering target lesion revascularization. Further randomized studies are needed to compare the newer-generation DCBs and DES in this setting.

Meta-Analysis Comparing Torsemide Versus Furosemide in Patients With Heart Failure.

Although torsemide's oral bioavailability and half-life theoretically render it a more efficient diuretic than furosemide, the clinical outcomes of torsemide compared with furosemide remain unclear. We performed a systematic review and meta-analysis, including all published studies that compared torsemide and furosemide use in heart failure patients from January 1996 through August 2019. Nineteen studies (9 randomized control trials [RCTs] and 10 observational studies) with a total of 19,280 patients were included. During a mean follow-up duration of 15 months, torsemide was associated with a numerically lower risk of hospitalization due to heart failure (10.6% vs 18.4%; odds ratio [OR] 0.72, 95% confidence interval [CI] [0.51, 1.03], p = 0.07, I2 = 18%; number needed to treat [NNT] = 23) compared with furosemide. Torsemide was associated with statistically significant more improvement in functional status from New York Heart Association (NYHA) class III/IV to I/II (72.5% vs 58%; OR 2.32, 95% CI (1.32, 4.1), p = 0.004, I2 = 27%; NNT = 5) and lower risk of cardiac mortality (1.5% vs 4.4%; OR 0.37, 95% CI (0.20, 0.66), p <0.001, I2 = 0%, NNT = 40) compared with furosemide. However, there was no difference in all-cause mortality or medication side effects between the 2 groups. In conclusion, compared with furosemide, torsemide use was associated with significant more improvement in functional status and lower cardiac mortality; and numerically fewer hospitalizations in patients with heart failure.

Radial Versus Femoral Access in Chronic Total Occlusion Percutaneous Coronary Intervention.

Background Radial access (RA) is increasingly used in chronic total occlusion (CTO) percutaneous coronary intervention with encouraging results. However, there are concerns about its safety and efficacy because of higher complexity and the need for strong guide catheter support. Methods and Results We performed a systematic review and meta-analysis of all studies published through November 2018 reporting the outcomes of RA versus femoral access in CTO percutaneous coronary intervention. Outcomes included major bleeding, access-site complications, in-hospital major adverse events, and technical success. Nine observational studies with 10 590 patients (10 617 lesions) were included in the meta-analysis. CTO lesions attempted using RA had lower Japan-CTO score (2.3±1.2 versus 2.5±1.3; P<0.001). Use of RA was associated with similar technical success (78.7% versus 78.5%; odds ratio, 1.11; 95% CI, 0.94-1.31; P=0.24; I2=23%), lower risk of access-site complications (0.73% versus 1.79%; odds ratio, 0.34; 95% CI, 0.22-0.51; P<0.001; I2=0%) and major bleeding (0.18% versus 0.9%; odds ratio, 0.22; 95% CI, 0.10-0.45; P<0.001; I2=0%), and similar risk of in-hospital adverse events and in-hospital mortality (odds ratio, 0.36; 95% CI, 0.12-1.07; P=0.07; I2=0%) as compared to femoral access. Results were similar when analyzing radial-only versus any femoral access and when excluding the largest study. Conclusions As compared with femoral access, RA is used in CTO percutaneous coronary intervention of less complex lesions and is associated with fewer access-site complications and major bleeding and comparable technical success.

Outcomes with cilostazol after endovascular therapy of peripheral artery disease.

The role of cilostazol after endovascular therapy (EVT) of peripheral artery disease (PAD) remains unclear. We conducted a meta-analysis for all studies reporting the outcomes of cilostazol after EVT of PAD from January 2000 through November 2018 with the outcomes of interest including primary patency, major adverse limb events (MALE), target lesion revascularization (TLR), and major amputation. We included eight studies (three randomized controlled trials (RCTs) and five observational studies) with a total of 3846 patients (4713 lesions). During a mean follow-up duration of 12.5 ± 5 months, the use of cilostazol was associated with higher primary patency (OR 2.28, 95% CI (1.77, 2.94), p < 0.001, I2 = 24%), lower risk of TLR (OR 0.37, 95% CI (0.26, 0.52), p < 0.001, I2 = 0%), and lower risk of major amputation (OR 0.15, 95% CI (0.04, 0.62), p = 0.008, I2 = 0%). The use of cilostazol in RCTs was associated with significantly higher odds of primary patency compared with observational studies (OR 3.37 vs 2.28, p-interaction = 0.03). After further subgroup analysis, cilostazol remained associated with higher primary patency regardless of the use of anticoagulants (warfarin) (p-interaction = 0.49). We conclude that the use of cilostazol after EVT of femoropopliteal and iliac lesions is associated with improved primary patency and lower risk of major amputation and TLR. The favorable impact of cilostazol is independent of the use of warfarin. PROSPERO identifier: CRD42018092715.

Effects of intravenous ketamine in a patient with post-treatment Lyme disease syndrome.

Post-treatment Lyme disease syndrome (PTLDS) is a pain disorder for which there remains no gold standard treatment option. Here, we report a case of PTLDS in a female patient whose pain was refractory to treatment options such as radiofrequency ablation, vitamin infusion therapy, opioid analgesics, and other pharmacotherapies. The patient commenced an experimental intravenous ketamine infusion therapy at the Florida Spine Institute (Clearwater, FL, USA) and achieved relief from her chronic pain, an improved quality of life, reduced depression and suicidal ideation, and reduced opioid consumption.