Co-VAN study: COVID-19 vaccine associated neurological diseases- an experience from an apex neurosciences centre and review of the literature.

Background: Recent studies have shown various neurological adverse events associated with COVID-19 vaccine.

Objective: We aimed to retrospectively review and report the neurological diseases temporally associated with COVID-19 vaccine.

Methods: We performed a retrospective chart review of admitted patients from 1st February 2021 to 30th June 2022.

Prevalence and treatment of "balloon-uncrossable" coronary chronic total occlusions.

Background: The frequency and outcomes of "balloon-uncrossable" coronary chronic total occlusions (CTOs) have received limited study.

Methods: We retrospectively examined 373 consecutive CTO percutaneous coronary interventions (PCIs) performed at our institution between 2005 and 2013 to determine the frequency and treatment of balloon-uncrossable CTOs.

Results: Mean age was 63.

The efficacy and safety of the "hybrid" approach to coronary chronic total occlusions: insights from a contemporary multicenter US registry and comparison with prior studies.

Background: Percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) is challenging and has been associated with low success rates. However, recent advancements in equipment and the flexibility to switch between multiple technical approaches during the same procedure ("hybrid" percutaneous algorithm) have dramatically increased the success of CTO-PCI. We sought to compare the contemporary procedural outcomes of hybrid CTO-PCI with previously published CTO-PCI studies.

Outcomes with first- versus second-generation drug-eluting stents in coronary chronic total occlusions (CTOs): a systematic review and meta-analysis.

Objective: The objective of the present study was to perform a systematic review and meta-analysis of studies reporting outcomes after first- and second-generation drug-eluting stent (DES) implantation in chronic total occlusions (CTOs).

Background: The effect of second- vs first-generation DESs on the outcomes after CTO percutaneous coronary intervention (PCI) has received limited study.

Methods: As of May 2013, thirty-one published studies reported outcomes after DES implantation in CTOs: thirteen uncontrolled studies (3161 patients), three randomized (220 patients) and ten non-randomized (2150 patients) comparative studies with bare-metal stents (BMSs), and two non-randomized (685 patients) and three randomized (489 patients) comparative studies between first- and second-generation DESs.

Amplatzer vascular plug IV for occlusion of pulmonary arteriovenous malformations in a patient with cryptogenic stroke.

Paradoxical embolism resulting in cryptogenic stroke has received much attention recently, with the primary focus on patent foramen ovale (PFO). However, it is essential to be vigilant in the search for other causes of paradoxical embolic events, such as pulmonary arteriovenous malformations (PAVM). We describe successful closure of pulmonary AVM with a St Jude Medical (Plymouth, MN) Amplatzer™ vascular plug IV.

Surrogate and clinical outcomes following ischemic postconditioning during primary percutaneous coronary intervention of ST--segment elevation myocardial infarction: a meta-analysis of 15 randomized trials.

Objectives: To conduct a meta-analysis on surrogate and clinical outcomes with myocardial ischemic postconditioning (IPoC) following revascularization with primary percutaneous intervention (PPCI) for ST-segment myocardial infarction (STEMI) compared with PPCI alone.

Background: Reperfusion injury remains an important problem following PPCI for STEMI. Trials of IPoC have mainly focused on cardiac biomarkers; the impact on clinical outcomes is unknown.

Application of the "hybrid approach" to chronic total occlusions in patients with previous coronary artery bypass graft surgery (from a Contemporary Multicenter US registry).

Percutaneous coronary intervention (PCI) for chronic total occlusions (CTOs) has been traditionally associated with lower success rates in patients with previous coronary artery bypass graft surgery (CABG). We sought to examine the success and complication rates of CTO PCI using the "hybrid" crossing algorithm among patients with a history of previous CABG. The procedural outcomes of 496 consecutive CTO PCIs performed at 5 high-volume PCI centers in the United States from January 2012 to August 2013 were assessed.

Angiographic success and procedural complications in patients undergoing retrograde percutaneous coronary chronic total occlusion interventions: a weighted meta-analysis of 3,482 patients from 26 studies.

Background: The efficacy and safety profile of retrograde chronic total occlusion (CTO) percutaneous coronary intervention (PCI) has received limited study. We sought to perform a weighted meta-analysis of the success and complication rates of retrograde CTO PCI.

Methods: We conducted a meta-analysis of 26 studies published between 2006 and April 2013 reporting in-hospital outcomes of retrograde CTO PCI.

Outcomes of preoperative bridging therapy for patients undergoing surgery after coronary stent implantation: a weighted meta-analysis of 280 patients from eight studies.

Background: Preoperative bridging with a glycoprotein IIb/IIIa inhibitor is often performed in patients with prior coronary stents undergoing surgery who require antiplatelet therapy discontinuation, but its safety and efficacy have received limited study. We performed a weighted meta-analysis of the outcomes in patients with coronary stents undergoing bridging with glycoprotein IIb/IIIa inhibitors prior to surgery.

Methods: We conducted a weighted meta-analysis of preoperative bridging studies published between 2002 and 2013 in patients with coronary stents undergoing surgery.

Clinical, angiographic, and procedural predictors of periprocedural complications during chronic total occlusion percutaneous coronary intervention.

Objectives: To identify clinical, angiographic, and procedural factors associated with increased risk of periprocedural complications during chronic total occlusion (CTO) percutaneous coronary intervention (PCI).

Background: Successful CTO PCI can provide significant clinical benefit; however, procedural risks have received limited study. We sought to identify factors associated with increased CTO PCI periprocedural risk that could be utilized to guide patient and lesion selection.

Application of the "hybrid approach" to chronic total occlusion interventions: a detailed procedural analysis.

Objective: To assess the outcomes of the "hybrid" approach to chronic total occlusion (CTO) percutaneous coronary interventions (PCIs).

Background: The "hybrid approach" to CTO PCI advocates appropriate and early change of crossing strategy to maximize success, safety, and efficiency.

Methods: We prospectively recorded and analyzed detailed step-by-step procedural data in 73 consecutive CTO PCI cases performed by a single operator between July 2011 and August 2012.

Impact of contrast agent viscosity on coronary balloon deflation times: bench testing results.

Objectives: To assess the impact of viscosity on angioplasty balloon deflation times.

Background: Lower contrast viscosity could result in more rapid coronary balloon deflation times.

Methods: We performed a bench comparison of coronary balloon deflation times using 2 contrast agents with different viscosity (ioxaglate and iodixanol), 3 contrast dilutions, and 2 inflation syringe filling volumes.

Periprocedural myocardial injury in chronic total occlusion percutaneous interventions: a systematic cardiac biomarker evaluation study.

Objectives: This study sought to evaluate the incidence, correlates, and clinical implications of periprocedural myocardial injury (PMI) during percutaneous coronary intervention (PCI) of chronic total occlusions (CTO).

Background: The risk of PMI during CTO PCI may be underestimated because systematic cardiac biomarker measurement was not performed in published studies.

Methods: We retrospectively examined PMI among 325 consecutive CTO PCI performed at our institution between 2005 and 2012.

Stent loss and retrieval during percutaneous coronary interventions: a systematic review and meta-analysis.

Objective: We present a systematic review and meta-analysis of the frequency, consequences, and treatment of stent loss during percutaneous coronary intervention (PCI).

Background: Stent loss during PCI has received limited study.

Methods: We conducted a meta-analysis of 18 case series and 45 case reports published between 1991 and 2012 on stent loss during PCI.

Long-term outcomes with use of the CrossBoss and stingray coronary CTO crossing and re-entry devices.

Background: The Boston Scientific CrossBoss and Stingray Coronary CTO Crossing and Re-Entry devices (formerly the BridgePoint Medical System) can improve success rates in chronic total occlusion (CTO) percutaneous coronary intervention (PCI), but there are no published data on long-term clinical outcomes.

Methods: The acute and long-term outcomes of 170 consecutive patients who underwent CTO PCI at our institution were reviewed, including 60 patients in whom the CrossBoss and Stingray devices were used and 110 patients treated with other crossing strategies.

Results: Baseline characteristics were similar between the two cohorts.

Prevalence and management of coronary chronic total occlusions in a tertiary Veterans Affairs hospital.

Objectives: We sought to determine the contemporary prevalence and management of coronary chronic total occlusions (CTO) in a veteran population.

Background: The prevalence and management of CTOs in various populations has received limited study.

Methods: We collected clinical and angiographic data in consecutive patients that underwent coronary angiography at our institution between January 2011 and December 2012.

A randomized comparison of the transradial and transfemoral approaches for coronary artery bypass graft angiography and intervention: the RADIAL-CABG Trial (RADIAL Versus Femoral Access for Coronary Artery Bypass Graft Angiography and Intervention).

Objectives: This study sought to compare and contrast use and radiation exposure using radial versus femoral access during cardiac catheterization of patients who had previously undergone coronary artery bypass graft (CABG) surgery.

Background: Limited information is available on the relative merits of radial compared with femoral access for cardiac catheterization in patients who had previously undergone CABG surgery.

Methods: Consecutive patients (N = 128) having previously undergone CABG surgery and referred for cardiac catheterization were randomized to radial or femoral access.

Use of the retrograde approach for primary percutaneous coronary intervention of an inferior ST-segment elevation myocardial infarction.

Percutaneous coronary intervention (PCI) during ST-segment elevation myocardial infarction (STEMI) can be challenging due to limited distal vessel visualization. We present a case of challenging antegrade wiring during PCI of an inferior STEMI resulting in inadvertent subintimal wiring and ballooning. Recognition of this scenario prior to stenting allowed vessel rescue using the retrograde chronic total occlusion revascularization technique.

Meta-analysis of stroke after transradial versus transfemoral artery catheterization.

Background: Transradial (TR) catheterization is gaining popularity due to its association with lower bleeding and access site complications, improved patient comfort, and lower costs compared to transfemoral (TF) catheterization; however, there is concern that TR catheterization may be associated with an increased risk of neurological complications. New randomized data has emerged since the publication of the last meta-analysis evaluating the risk of stroke between TR and TF catheterization in 2009.

Methods: We conducted a meta-analysis of randomized studies published until 2013 reporting risk of stroke in TR vs.

Medical management after coronary stent implantation: a review.

Importance: Percutaneous coronary intervention (PCI) with stents is currently the most commonly performed coronary revascularization procedure; hence, optimizing post-PCI outcomes is important for all physicians treating such patients.

Objective: To review the contemporary literature on optimal medical therapy after PCI.

Evidence Review: We performed a comprehensive search of the PubMed and Cochrane Library databases for manuscripts on medical therapy after PCI, published between 2000 and February 2013.

Procedural outcomes of revascularization of chronic total occlusion of native coronary arteries (from a multicenter United States registry).

Percutaneous coronary intervention (PCI) of chronic total occlusions (CTOs) is a rapidly evolving area of interventional cardiology. We sought to examine the immediate procedural and in-hospital clinical outcomes of native coronary artery CTO PCI from a multicenter United States (US) registry. We retrospectively examined the procedural outcomes of 1,361 consecutive native coronary artery CTO PCIs performed at 3 US institutions from January 2006 to November 2011.

Same-day discharge after percutaneous coronary intervention: a meta-analysis.

Objectives: This study sought to assess the safety of same-day discharge in patients undergoing percutaneous coronary intervention (PCI).

Background: The safety of same-day discharge has previously been evaluated primarily in small, single-center studies.

Methods: We conducted a meta-analysis of studies reporting outcomes of patients discharged on the same day as PCI.