Successful retrieval of dislodged classic crown on coronary orbital atherectomy
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - July 20, 2020 Category: Cardiology Source Type: research

A model for predicting the time of early symptomatic restenosis after infrapopliteal angioplasty in patients with critical limb ischemia
The objective of this study is to develop a model for predicting the time of early symptomatic (delayed or nonhealing wound) restenosis after infrapopliteal angioplasty in patients with critical limb ischemia (CLI). This is a single-center retrospective cohort study evaluating 60 de novo infrapopliteal lesions of 38 limbs in 35 patients with CLI, who underwent successful endovascular treatment (EVT) from October 2016 to December 2018 and follow-up angiography within 3  months from the procedure. Outcome measures were binary restenosis at follow-up angiography and clinical outcome at 3 months. Patient/limb/lesion ...
Source: Cardiovascular Intervention and Therapeutics - July 18, 2020 Category: Cardiology Source Type: research

Kinking and shaft breakage of a 2.6-Fr Tornus catheter during percutaneous coronary intervention for a chronic total occlusion lesion of a tortuous and calcified right coronary artery
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - July 18, 2020 Category: Cardiology Source Type: research

Late lumen enlargement after drug-coated balloon angioplasty for de novo coronary artery disease
AbstractWe aimed to identify predictors of late lumen enlargement (LLE) after drug-coated balloon (DCB) angioplasty for de novo coronary lesions. LLE, which is defined as an increase in the luminal diameter of the vessel from the immediate postprocedural measurement to follow-up measurements, is frequently observed after DCB angioplasty for de novo coronary artery disease. No predictors of LLE are known. This retrospective observational study analyzed 196 de novo coronary lesions in 182 patients who underwent both DCB angioplasty and follow-up angiography. Of the 196 lesions, 109 (56%) developed LLE during a mean follow-up...
Source: Cardiovascular Intervention and Therapeutics - July 9, 2020 Category: Cardiology Source Type: research

Correction to: Clinical use of physiological lesion assessment using pressure guidewires: an expert consensus document of the Japanese Association of Cardiovascular Intervention and Therapeutics
In the original publication of the article, author group affiliation was published incorrectly. The correct affiliation for author group is given in this correction. (Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - July 7, 2020 Category: Cardiology Source Type: research

Conduction disturbances in low-surgical-risk patients undergoing transcatheter aortic valve replacement with self-expandable or balloon-expandable valves
AbstractDespite a considerable improvement in TAVR devices and procedures, together with a reduction in procedural complications, the rate of conduction disturbances (CD) remained stable over the years. Indeed, the CD rate is still significantly higher than in surgical aortic valve replacement, and represents one of the main limitations to the expansion of TAVR to younger low-risk patients. The aim of the present study was to assess the incidence and predictors of CD in low-risk patients undergoing TAVR. Among 637 patients without preexisting CD who underwent TAVR, 116 (18.2%) were considered at low surgical risk. Up to 25...
Source: Cardiovascular Intervention and Therapeutics - July 5, 2020 Category: Cardiology Source Type: research

Usefulness of buddy-wire anchoring technique in cases where deep insertion of guide extension catheter is difficult
AbstractGuide extension catheters are useful in PCI procedures when device passage is difficult. However, in complex lesions, such as severely tortuous vessels, deep insertion of the guide extension catheter cannot always be achieved even when balloon anchoring technique is applied. In such cases, in our hospital, a guidewire is added as a buddy wire and the balloon anchoring technique is applied. The advantage of this method is that the anchoring force is strengthened by anchoring another wire with the wire. By pulling the wire that has been anchored with a balloon, anchoring force is fortified, enabling deep insertion of...
Source: Cardiovascular Intervention and Therapeutics - July 5, 2020 Category: Cardiology Source Type: research

Early vascular response of ultra-thin bioresorbable polymer sirolimus-eluting stents assessed by optical frequency domain imaging: the EVALUATION study
This study aimed to evaluate the early vascular response of ultra-thin strut bioresorbable polymer sirolimus-eluting stents (BP SES) using optical frequency domain imaging (OFDI). Ultra-thin strut BP SES have superior outcomes in terms of efficacy and safety endpoints when compared to other thin strut new-generation stents. However, the factors contributing to the superiority of BP SES over other thin strut new-generation stents are unclear. A total of 32 patients with multivessel disease requiring staged procedures at 1  month were enrolled from 3 cardiovascular institutions; of these, 31 were immediately assessed by...
Source: Cardiovascular Intervention and Therapeutics - July 3, 2020 Category: Cardiology Source Type: research

Feasibility of kissing balloon technique through guide extension catheters: an experimental bench test
AbstractPrevious reports showed that GuideLiner (GL) and Guidezilla (GZ) can accommodate bulky and multiple devices beyond the official profiles. However, feasibility of kissing balloon technique (KBT) through these devices is unknown. The tested devices included 7Fr-GL/GZ and respective three types of 2.5  mm semi-compliant (SC) and non-compliant (NC) balloons: conventional model (CM), tapered-tip model (TM) and latest model (LM). First, three experienced operators attempted to advance all 21 combinations of the 2 balloons through GL/GZ on the guidewires and assessed the crossability in 3 grades: ea sy, difficult and...
Source: Cardiovascular Intervention and Therapeutics - June 15, 2020 Category: Cardiology Source Type: research

RETRACTED ARTICLE: Role of transesophageal echocardiography in percutaneous mitral valve repair using MitraClip
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - June 15, 2020 Category: Cardiology Source Type: research

Possible thrombus formation with huge high-echoic image in the right atrium following rapid ventricular pacing during transcatheter aortic valve implantation
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - June 11, 2020 Category: Cardiology Source Type: research

Utility of angiography –physiology coregistration maps during percutaneous coronary intervention in clinical practice
This study aimed to evaluate the utility and feasibility of physiological maps coregistered with angiograms using the pullback of a pressure guidewire with continuous instantaneous wave-free ratio (iFR) measurements. iFR pullback was obtained for 70 lesions from 70 patients with stable angina pectoris using SyncVision (Philips Corp.). Physiological maps were created, whereby the post-intervention iFR (post-iFR) was predicted as iFRpred. The iFR gap was defined if the difference between the iFRpred and post-iFR was  ≥ 0.3. The lesion morphology changed from that during the physiological assessment to that d...
Source: Cardiovascular Intervention and Therapeutics - June 7, 2020 Category: Cardiology Source Type: research

A novel technique to avoid perforation of the right ventricle by the temporary pacing lead during transcatheter aortic valve implantation
AbstractCardiac tamponade is a life-threatening complication during transcatheter aortic valve implantation (TAVI), often caused by perforation of the right ventricle (RV) by the temporary pacemaker used for rapid pacing during valve deployment. We aimed to assess the feasibility of performing rapid pacing while maintaining inflation of the pacing lead balloon in the RV during TAVI. Among 749 consecutive patients who underwent TAVI with SAPIEN XT valves between October 2013 and July 2015, 726 treated using rapid pacing with a transvenous balloon-tip lead were enrolled in our study, and were stratified into three groups acc...
Source: Cardiovascular Intervention and Therapeutics - May 30, 2020 Category: Cardiology Source Type: research

Effect of transcatheter closure by Amplatzer TM Duct Occluder II in patients with small ventricular septal defect
AbstractTranscatheter closure of ventricular septal defect (VSD) is an alternative treatment of surgery. However, because of the potential risk of the complete atrioventricular block (AVB) and the lack of available dedicated devices for VSD, this procedure rarely used most centers. Recently in Thailand, with distinct device design that may cause less clamp force and radial force, the AmplatzerTMDuct Occluder (ADO) II has become available for the closure of small VSDs. This is a retrospective review of 49 patients who underwent transcatheter VSD closure using ADO II at Songklanagarind hospital and Queen Sirikit National Ins...
Source: Cardiovascular Intervention and Therapeutics - May 27, 2020 Category: Cardiology Source Type: research

Comparison of infective endocarditis risk between balloon and self-expandable valves following transcatheter aortic valve replacement: systematic review and meta-analysis
This study aimed to compare incidence of IE between BE and SE valves by performing a systematic review and meta-analysis of the literature. We comprehensively searched the databases of MEDLINE and EMBASE from inception to November 2019. Included studies were published observational studies that compared the risk of IE among patients undergoing TAVR employing BE versus SE valves, using the random-effects to calculate risk ratios and 95% confidence intervals (CIs).Ten cohort studies from April 2013 to November 2019 were included in this meta-analysis involving 13,478 subjects (6289 SE and 7189 BE types). Our study showed no ...
Source: Cardiovascular Intervention and Therapeutics - May 24, 2020 Category: Cardiology Source Type: research

Contemporary use and trends in percutaneous coronary intervention in Japan: an outline of the J-PCI registry
AbstractCardiovascular interventions have achieved a level of excellence, with many outstanding advanced techniques and results. The mission of the Japanese Association of Cardiovascular Intervention and Therapeutics (CVIT) is to further our understanding of cardiovascular intervention and establish its procedural safety. [1] The Japanese Percutaneous Coronary Intervention (J-PCI) registry was established and sponsored by CVIT, and aims to provide basic statistics on the performance of percutaneous coronary interventions (PCI) in Japan. Today, the database has grown to become one of the largest healthcare procedural databa...
Source: Cardiovascular Intervention and Therapeutics - May 21, 2020 Category: Cardiology Source Type: research

Reinforcement of the anchor balloon system in percutaneous coronary intervention: an in vitro assessment
AbstractWe evaluated the factors that increase the maximum static friction force between the anchoring balloon and the vessel wall. The anchor technique in percutaneous coronary intervention (PCI) may be better supported by a guiding catheter. However, in some cases, the anchor balloon does not perform optimally due to slippage within the anchoring vessel. Furthermore, the optimal procedure for balloon anchoring remains unknown. We evaluated the maximum static friction force of the anchor balloon via in vitro assessments using a simulated vessel model and coronary balloons. The simulated vessel model was composed of polyte...
Source: Cardiovascular Intervention and Therapeutics - May 19, 2020 Category: Cardiology Source Type: research

Inter-observer differences in interpretation of coronary pressure-wire pullback data by non-expert interventional cardiologists
This study sought to investigate the subjectivity of this assessment among non-experts. Expert interventional cardiologists classified 545 PW-pullback traces into physiologically focal or physiologically diffuse disease pattern. Defining expert-consensus as the reference standard, we evaluated ten non-expert doctors ’ classification performance. Observers were stratified equally by two ways: (i) years of experience as interventional cardiologists (middle-level vs. junior-level) and (ii) volume of institutions where they belonged to (high-volume center vs. low-volume center). When judged against the expert-con sensus,...
Source: Cardiovascular Intervention and Therapeutics - May 19, 2020 Category: Cardiology Source Type: research

Evaluation of the incidence, timing, and potential recovery rates of complete atrioventricular block after transcatheter aortic valve implantation: a Japanese multicenter registry study
This study aimed to assess the incidence, timing, and potential recovery of CAVB following TAVI. Total 696 patients who underwent TAVI were enrolled. Acute CAVB was evaluated within 24  h; delayed CAVB was evaluated 24 h after TAVI. Recovered CAVB was defined as ventricular pacing 
Source: Cardiovascular Intervention and Therapeutics - May 16, 2020 Category: Cardiology Source Type: research

Percutaneous closure of residual atrial septal defect after surgical closure
AbstractResidual atrial septal defect (ASD) after surgical closure is rare, but some cases are seen during follow-up period. Redo surgery for residual ASD is often declined, while percutaneous closure can be acceptable. However, the indication of percutaneous closure for residual ASD has not been established. We reviewed our experience with percutaneous closure of residual ASD using medical and procedural records. Between 2006 and 2018, residual ASD was seen in seven patients. The median age of patients was 66  years (range 50–81 years), and the median period after surgical closure of ASD was 39 years ...
Source: Cardiovascular Intervention and Therapeutics - May 13, 2020 Category: Cardiology Source Type: research

Plaque volume reduction after drug-coated balloon angioplasty for superficial femoral artery lesion
AbstractPaclitaxel has a potentially beneficial effect on atherosclerotic plaque volume reduction; however, data about plaque volume reduction in real-world practice are scarce. We herein report a case whose plaque volume of superficial femoral artery was analyzed using high-definition intravascular ultrasound just after endovascular treatment using drug-coated balloon and at 6  months after the procedure. From analysis using a quantitative intravascular ultrasound analysis system, the lumen volume was enlarged (from 2909.2 to 4944.1 mm3) as a result of not only vessel volume enlargement (from 7242.0 to 8296.3 &n...
Source: Cardiovascular Intervention and Therapeutics - May 13, 2020 Category: Cardiology Source Type: research

First-in-man short-term optical frequency domain imaging of new-generation fluoropolymer-based paclitaxel-eluting stents after endovascular therapy
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - April 22, 2020 Category: Cardiology Source Type: research

Combining the CoreValve Evolut PRO and 14-French eSheath in transfemoral transcatheter aortic valve replacement
We present the case of an 84-year-old woman with a symptomatic severe aortic stenosis, wherein transfemoral transcatheter aortic valve replacement (TAVR) was performed using a self-expandable CoreValve Evolut PRO. Although delivering the CoreValve InLine sheath was difficult due to iliac artery calcification, a low-profile 14-French expandable eSheath proved useful for delivering the Evolut PRO system. This case demonstrated the feasibility of using the Evolut PRO valve combined with a 14-French eSheath, which was designed for the Edwards SAPIEN valve. (Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - April 20, 2020 Category: Cardiology Source Type: research

Multivariable prediction model to estimate the probability of restenosis at proximal edge after 2nd-generation drug-eluting-stent implantation: development and internal validation using a quantitative coronary angiography from the post-marketing surveillance studies of everolimus-eluting stent in Japan
AbstractEdge restenosis has still been reported after second-generation drug-eluting stent (DES) implantation. It was more likely attributable to post-procedural angiographic results than to the patient ’s background. The aim of this study was to develop and internally validate a prediction model for restenosis in proximal edge after 2nd-generation DES stent implantation using angiographic data. Data were obtained from several post-marketing surveillance (PMS) studies of the cobalt–chromium eve rolimus-eluting stent (CoCr-EES) and platinum–chromium everolimus-eluting stent (PtCr-EES), second-generation DE...
Source: Cardiovascular Intervention and Therapeutics - April 18, 2020 Category: Cardiology Source Type: research

Contrast-induced acute kidney injury
AbstractAlthough major advancements in the field of cardiology have allowed for an increasing number of patients to undergo minimally invasive imaging and interventional procedures, contrast-induced acute kidney injury (CI-AKI) continues to be a dreaded complication among patients receiving intravascular contrast media. CI-AKI is characterized by progressive decline in kidney function within a few days of contrast medium administration. Physiological changes resulting from the direct nephrotoxic effect of contrast media on tubular epithelial cells and release of vasoactive molecules have been implicated in creating a state...
Source: Cardiovascular Intervention and Therapeutics - April 6, 2020 Category: Cardiology Source Type: research

Cardiac erosion causing an aortic dissection after a catheter closure of an atrial septal defect: first late erosion case with the Figulla Flex II septal occluder
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - April 4, 2020 Category: Cardiology Source Type: research

Transcatheter mitral valve repair with MitraClip in a patient on hemodialysis with huge flail gap
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - April 3, 2020 Category: Cardiology Source Type: research

Improved crossability with novel cutting balloon versus scoring balloon in the treatment of calcified lesion
AbstractCutting balloons and scoring balloons are commonly used for the preparation of calcified lesion. However, problems with crossability occasionally limit the use of cutting balloons. We prospectively selected 173 calcified lesions treated using a novel cutting balloon (Wolverine ™, C group). As control, we retrospectively analyzed 146 calcified lesions treated using a scoring balloon (Lacrosse NSE ALPHA™, S group). Either intravascular ultrasound (IVUS) or optical coherence tomography (OCT) was used by the operator’s discretion. The primary outcome was delivery succes s, which was defined as success...
Source: Cardiovascular Intervention and Therapeutics - March 28, 2020 Category: Cardiology Source Type: research

Less frequent post-thrombotic syndrome after successful catheter-directed thrombolysis for acute iliofemoral deep vein thrombosis
In this study, we aimed to identify potential markers of thrombolysis success at the early stage and to clarify the relationship between early thrombolysis success and subsequent PTS development in patients with acute DVT in the iliac vein . Fifty-two consecutive patients with acute iliofemoral DVT who were treated with catheter-directed thrombolysis (CDT) within 21 days of onset were enrolled. An infusion catheter with multiple side holes was placed to cover the thrombosed vessel entirely. Urokinase solution was administered either continuously or with the pulse-spray method at a dose of 480,000–720,000 IU...
Source: Cardiovascular Intervention and Therapeutics - March 26, 2020 Category: Cardiology Source Type: research

One-year limb outcome and mortality in patients undergoing revascularization therapy for acute limb ischemia: short-term results of the Edo registry
AbstractThe present study aimed to clarify the current status, therapeutic strategy, and 1-year outcome in acute limb ischemia (ALI) patients in Japan. The EnDOvascular treatment (Edo) registry database includes 324 patients from 10 institutes who were registered between November 2011 and October 2013. A total of 70 ALI patients (mean age 74.0  years) from the Edo registry database were enrolled in this study. Of the 70 included patients, 72.9% were male and 35.7% had embolism. Of patients, 38.6%, 42.9%, and 18.6% underwent EVT, surgery, and hybrid thrombectomy, respectively, in primary revascularization strategy. Lim...
Source: Cardiovascular Intervention and Therapeutics - March 25, 2020 Category: Cardiology Source Type: research

Clinical outcome after surgical aortic valve replacement in low-risk Japanese patients with severe aortic stenosis
AbstractTwo randomized control trials demonstrated that transcatheter aortic valve implantation was associated with 1 –2 year clinical outcomes comparable or even superior to surgical aortic valve replacement (SAVR) in low surgical risk patients with severe aortic stenosis (AS). However, no previous study has reported the clinical outcomes after SAVR in Japanese patients with low surgical risk. From 3815 consecu tive patients enrolled in the CURRENT AS registry, we retrieved 220 patients who underwent SAVR in reference to the inclusion and exclusion criteria of the PARTNER 3 trial. Age and surgical risk score in...
Source: Cardiovascular Intervention and Therapeutics - March 13, 2020 Category: Cardiology Source Type: research

Impact of dedicated hemostasis device for distal radial arterial access with an adequate hemostasis protocol on radial arterial observation by ultrasound
AbstractThere is no established hemostasis method or protocol for the transdistal radial approach. Therefore, this study aimed to determine whether “the PreludeSYNC DISTAL” radial compression device (PSD; Merit Medical Systems, Inc., South Jordan, UT) can effectively prevent distal radial artery (dRA) occlusion following catheterization procedures. This retrospective study analyzed patients who underwent hemostasis using the PSD from Januar y 1, 2019, to March 31, 2019. The primary endpoint was occlusion or excessive stenosis of the radial artery (RA) 1 month after catheterization. Pulsatile blood flow and...
Source: Cardiovascular Intervention and Therapeutics - March 12, 2020 Category: Cardiology Source Type: research

Stent edge vascular response and in-stent geometry after aerobic exercise
AbstractThe purpose of the present study was to investigate the edge vascular response in patients treated with second-generation drug-eluting stents (DES) after 3  months of aerobic exercise intervention. Thirty-two patients with significant coronary artery disease underwent percutaneous coronary intervention with DES implantation prior to randomization to aerobic interval training (AIT, 14 patients) versus moderate continuous training (MCT, 18 patients). Pl aque changes were assessed using grayscale and radiofrequency intravascular ultrasound at baseline and follow-up. The main endpoints were changes in plaque burde...
Source: Cardiovascular Intervention and Therapeutics - March 9, 2020 Category: Cardiology Source Type: research

Successful transcatheter closure for lacerated iatrogenic atrial septal defect during transcatheter mitral valve repair using MitraClip
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - March 6, 2020 Category: Cardiology Source Type: research

Papillary muscle rupture during transcatheter aortic valve replacement
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - March 6, 2020 Category: Cardiology Source Type: research

Clinical expert consensus document on quantitative coronary angiography from the Japanese Association of Cardiovascular Intervention and Therapeutics
AbstractQuantitative coronary angiography (QCA) remains to play an important role in clinical trials and post-marketing surveillance related to the safety and efficacy of new PCI devices. In this document, the current standard methodology of QCA is summarized. In addition, its history, recent development and future perspectives are also reviewed. (Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - March 3, 2020 Category: Cardiology Source Type: research

Effects of high-speed rotational atherectomy in peripheral artery disease patients with calcified lesions: a retrospective multicenter registry
This study enrolled patients who underwent Rotablator (Rota group) and those who did not (Non-rota group) between January 20 10 and 2014 December at 12 hospitals. A total of 67 limbs and 68 lesions in 65 patients were included (Rota group; 54 limbs and 55 lesions in 52 patients, Non-rota group; 13 limbs and 13 lesions in 13 patients). In the Rota group, a technical success rate was 94.5% with a complication rate of 1.8%, and all lesions underwent subsequent postdilatation following the adjunctive use of Rotablator, and approximately half of above-the-knee lesions underwent stent implantation. The Rota group had a significa...
Source: Cardiovascular Intervention and Therapeutics - February 28, 2020 Category: Cardiology Source Type: research

Details on the effect of very short dual antiplatelet therapy after drug-eluting stent implantation in patients with high bleeding risk: insight from the STOPDAPT-2 trial
In conclusion, the effects of 1-month DAPT for the primary and major secondary endpoints were consistent in HBR and non-HBR patients without any significant interactions. The benefit of 1-month DAPT in reducing major bleeding was numerically greater in HBR patients.Clinical trial registration Short and optimal duration of dual antiplatelet therapy after everolimus-eluting cobalt –chromium stent-2 [STOPDAPT-2]; NCT02619760. (Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - February 21, 2020 Category: Cardiology Source Type: research

Color  coded circulation in the field of infrapopliteal intervention
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - February 19, 2020 Category: Cardiology Source Type: research

The evaluation of technical outcome and wire manipulation time within 30  min in patients with poor distal vessel quality on percutaneous coronary intervention for chronic total occlusion
We examined 193 consecutive CTO –PCIs performed in January 2013–December 2017. The endpoint, including the technical outcomes in these patients between with and without PDV, was analyzed. Moreover, we re-evaluated the predictors for CTO–PCI difficulty according to Japan-CTO score. Out of 193 CTO–PCIs, 181 (93.8%) achieved technical success [including 101 (55.8%) with and 80 (44.2%) without PDV]. In patients with and without PDV, the success rates of guidewire crossing using only the antegrade technique were 46.5% vs. 83.8%, respectively (p 
Source: Cardiovascular Intervention and Therapeutics - February 12, 2020 Category: Cardiology Source Type: research

Imaging-guided PCI for event suppression in Japanese acute coronary syndrome patients: community-based observational cohort registry
AbstractAlthough there is accumulating evidence for the usefulness of imaging-guided percutaneous coronary intervention (PCI), there are few studies for acute coronary syndrome (ACS), and the impact of the frequency of use has not been well addressed. From the Kumamoto Intervention Conference Study; a Japanese registry comprising 17 institutions, consecutive patients undergoing successful PCI from April 2008 through March 2014 were enrolled. Subjects were divided into two groups: imaging-guided PCI and angiography-guided PCI. Clinical outcome was a composite of cardiac death, non-fatal myocardial infarction, and stent thro...
Source: Cardiovascular Intervention and Therapeutics - February 12, 2020 Category: Cardiology Source Type: research

In vivo validation of resting full-cycle ratio and diastolic pressure ratio: simultaneous measurement with instantaneous wave-free ratio
AbstractThe diastolic pressure ratio (dPR) and resting full-cycle ratio (RFR) are considered to be almost identical to the instantaneous wave-free ratio (iFR) in the retrospective analysis of pooled data. The aim of this study was to investigate the direct comparison of iFR and these new resting indexes in real world practice. Two pressure wires were inserted and placed in the distal part of the same coronary artery. The measurement of the iFR and the other resting indexes was performed simultaneously. A total of 54 lesions from 23 patients were subject to physiological study. In 49 lesions, iFR and other resting indexes w...
Source: Cardiovascular Intervention and Therapeutics - February 11, 2020 Category: Cardiology Source Type: research

A case of effort angina complicated with cerebrotendinous xanthomatosis involving severe coronary artery calcification and the detection of a calcified nodule on optical coherence tomography
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - February 10, 2020 Category: Cardiology Source Type: research

Early progression of mimic calcified nodule in patient on hemodialysis
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - February 10, 2020 Category: Cardiology Source Type: research

Operators ’ radiation exposure reduction during cardiac catheterization using a removable shield
AbstractCardiac catheterization through radial access is associated with significant ionizing radiation exposure for the operator. We aimed at evaluating whether a removable shield placed upon the patient could impact favorably on annual radiation exposure for the operator. We designed a pre –post study comparing radiation exposure in a total of five operators under standard protection procedures (first period) and after applying a removable shield (second period). Each period included all the procedures performed in 1 year. Radiation exposure was measured through three dosimeters on each operator. A total of 16...
Source: Cardiovascular Intervention and Therapeutics - February 7, 2020 Category: Cardiology Source Type: research

A novel method for prevention of intravascular ultrasound catheter entrapment using soft guide extension catheter
(Source: Cardiovascular Intervention and Therapeutics)
Source: Cardiovascular Intervention and Therapeutics - January 29, 2020 Category: Cardiology Source Type: research

Dual antiplatelet therapy in coronary artery disease: from the past to the future prospective
AbstractAntiplatelet therapy, the cornerstone of post coronary stenting antithrombotic therapy, reduces the rate of hard clinical endpoints in patients treated both conservatively and invasively following an acute coronary syndrome, as well as in those patients with chronic stable coronary disease who receive a coronary stent. The development of newer antiplatelet and direct anticoagulant agents provides new options in the antithrombotic management of patients with coronary artery disease, enabling different therapeutic combinations to be tailored to an individual patient ’s bleeding and ischemic risk profile. In thi...
Source: Cardiovascular Intervention and Therapeutics - January 22, 2020 Category: Cardiology Source Type: research

Is crossability of the classic crown with the glide assist superior to the micro crown in the Diamondback 360 ® coronary orbital atherectomy system?
AbstractThe Diamondback 360 ® coronary orbital atherectomy system (OAS) can safely debulk calcified lesions by pullback of the crown, if the crown is advanced to the distal of the lesion. The aim of this study was to compare crossability with two types of crown in OAS. Thirty-six consecutive severely calcified lesions in 33 p atients who underwent percutaneous coronary intervention with the coronary OAS were included. The micro crown was used in 18 consecutive lesions from April 2018 to February 2019, and the classic crown with the glide assist was used in 18 consecutive lesions from March 2019 to August 2019. Good cro...
Source: Cardiovascular Intervention and Therapeutics - January 14, 2020 Category: Cardiology Source Type: research

Confirmation of maximal hyperemia by the incremental dose of intracoronary papaverine
AbstractWe investigated the effect of the papaverine dose increment method to confirm maximal hyperemia for fractional flow reserve (FFR) measurements. We evaluated 115 consecutive patients involving 200 lesions. FFR was measured after intracoronary papaverine injection into the left (12  mg) and right (8 mg) coronary arteries as standard doses. Except for 2 patients who had ventricular tachyarrythmia (VTA), we administered a higher papaverine dose (2 mg added to the standard dose). We compared the FFR values after using different papaverine doses. VTA incidence and electrocardio gram parameters were compare...
Source: Cardiovascular Intervention and Therapeutics - January 14, 2020 Category: Cardiology Source Type: research

Digital zoom is a useful, simple, and cost-effective method of reducing radiation exposure in percutaneous coronary intervention
AbstractReducing radiation exposure is a very important issue in interventional cardiology techniques such as percutaneous coronary intervention. Although novel techniques to reduce radiation exposure are valuable, we should also reconsider older techniques. Digital zoom has been available in Japan from 2005. Digital zoom enlarges an 8-inch field of view (FOV) by 1.2 times, allowing visualization of a 6.7-inch FOV without FOV switching. We identified 2101 suitable cases of percutaneous intervention (PCI) and divided them into two groups according to the use of digital zoom; 1195 patients were included in the digital zoom g...
Source: Cardiovascular Intervention and Therapeutics - January 14, 2020 Category: Cardiology Source Type: research