The incidence of slow flow after rotational atherectomy of calcified coronary arteries: A randomized study of low speed versus high speed

2016 ◽  
Vol 89 (5) ◽  
pp. 832-840 ◽  
Author(s):  
Kenichi Sakakura ◽  
Hiroshi Funayama ◽  
Yousuke Taniguchi ◽  
Yoshimasa Tsurumaki ◽  
Kei Yamamoto ◽  
...  
Keyword(s):  
Coronary Arteries ◽  
High Speed ◽  
Randomized Study ◽  
Rotational Atherectomy ◽  
Slow Flow ◽  
Low Speed

scholarly journals A Novel Rotablator Technique (Low-Speed following High-Speed Rotational Atherectomy) Can Achieve Larger Lumen Gain: Evaluation Using Optimal Frequency Domain Imaging

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Takanobu Yamamoto ◽  
Sawako Yada ◽  
Yuji Matsuda ◽  
Hirofumi Otani ◽  
Shunji Yoshikawa ◽  
...  
Keyword(s):  
Frequency Domain ◽  
High Speed ◽  
Vessel Diameter ◽  
Rotational Atherectomy ◽  
Lesion Length ◽  
Slow Flow ◽  
Optimal Frequency ◽  
Low Speed ◽  
Minimum Lumen Diameter

Background. While the evaluation of burr speed was discussed regarding platelet aggregation, the association between platform speed and acute lumen gain of rotational atherectomy remains unknown. Methods. Through the evaluation of the potential of low-speed rotational atherectomy (LSRA) in in-vitro experiments, minimum lumen diameter (MLD) and minimum lumen area (MLA) after conventional high-speed rotational atherectomy (HSRA group) and those after LSRA following HSRA (LSRA+HSRA group) treated by 1.5 mm burrs were measured by optical frequency domain imaging (OFDI) in 30 consecutive human lesions. Results. The in-vitro experiments demonstrated that MLD and MLA after LSRA+HSRA were significantly larger (MLD: LSRA+HSRA=1.50 ±0.05 mm, HSRA= 1.43 ±0.05 mm, p=0.015; MLA: LSRA+HSRA= 1.90 ±0.17 mm2, HSRA= 1.71±0.11 mm2, and p= 0.037), requiring more crossing attempts (LSRA= 134 ±20 times, HSRA= 72 ±11 times, and p< 0.001). In human studies, there was no significance in reference vessel diameter and lesion length before the procedure between two groups. MLDs after LSRA+HSRA were significantly larger than those in HSRA (LSRA+HSRA= 1.22 ±0.16 mm, HSRA= 1.07 ±0.14 mm, and p= 0.0078), while MLAs after LSRA+HSRA tended to be larger (LSRA+HSRA= 1.79 ±0.51 mm2, HSRA= 1.55 ±0.47 mm2, and p= 0.19). There was no significance in the occurrence of in-hospital complication, including slow flow or no reflow, major dissection, and procedural myocardial infarction, between LSRA+HSRA and HSRA. Conclusions. LSRA can achieve larger lumen gain compared, whereas HSRA can pass calcified lesions easily. Combination of LSRA and HSRA is a safe and feasible strategy for severely calcified lesions in clinical practice.

Rotational atherectomy

2010 ◽  
pp. 558-568
Author(s):  
Adam de Belder ◽  
Martyn Thomas
Keyword(s):  
Coronary Arteries ◽  
High Speed ◽  
Bare Metal Stent ◽  
Compressed Air ◽  
Rotational Atherectomy ◽  
Bare Metal ◽  
Stent Deployment ◽  
Calcified Plaque ◽  
Drug Eluting ◽  
Plain Old Balloon Angioplasty

Since 1979, plain old balloon angioplasty (POBA) has provided relief of angina for many patients. Recurrent symptoms due to restenosis diminished with bare-metal stent and, more recently, drug-eluting technology. A limitation to achieving good results with POBA and stenting is calcification within the artery which not only can prevent passage of balloons and stents into a lesion but also may prevent adequate lumen expansion. Rotational atherectomy or rotablation (RA) can treat highly resistant calcified plaque within coronary arteries to allow adequate vessel expansion and ensure optimal stent deployment. The concept of using a high-speed diamond-tipped drill spinning at 150 000rpm driven by compressed air to clear an artery that is 3mm in diameter is challenging, yet this technique has been available for use in coronary arteries since 1989 when M.E. Bertrand (Lille, France) and R. Erbel (Essen, Germany) first used it in humans.

scholarly journals Ablation effect of additional low-speed rotational atherectomy following high-speed rotational atherectomy

2020 ◽  
Vol 6 (1) ◽  
pp. 52-55
Author(s):  
Ruka Yoshida ◽  
Hideki Ishii ◽  
Itsuro Morishima ◽  
Akihito Tanaka ◽  
Takuma Tsuda ◽  
...  
Keyword(s):  
High Speed ◽  
Rotational Atherectomy ◽  
Low Speed

Additional debulking efficacy of low-speed rotational atherectomy after high-speed rotational atherectomy for calcified coronary lesion

2020 ◽  
Vol 36 (10) ◽  
pp. 1811-1819 ◽  
Author(s):  
Norihiro Kobayashi ◽  
Masahiro Yamawaki ◽  
Keisuke Hirano ◽  
Motoharu Araki ◽  
Tsuyoshi Sakai ◽  
...  
Keyword(s):  
High Speed ◽  
Rotational Atherectomy ◽  
Low Speed ◽  
Coronary Lesion

scholarly journals Detailed angiographic analysis of high-speed mechanical rotational atherectomy in human coronary arteries.

Circulation ◽  
1993 ◽  
Vol 88 (3) ◽  
pp. 961-968 ◽  
Author(s):  
R D Safian ◽  
K A Niazi ◽  
M Strzelecki ◽  
A Lichtenberg ◽  
M A May ◽  
...  
Keyword(s):  
Coronary Arteries ◽  
High Speed ◽  
Rotational Atherectomy

Rotational atherectomy

2018 ◽  
pp. 525-534
Author(s):  
Adam de Belder ◽  
Martyn Thomas ◽  
Emanuele Barbato
Keyword(s):  
Coronary Arteries ◽  
High Speed ◽  
Bare Metal Stent ◽  
Compressed Air ◽  
Rotational Atherectomy ◽  
Bare Metal ◽  
Stent Deployment ◽  
Calcified Plaque ◽  
Drug Eluting ◽  
Plain Old Balloon Angioplasty

Since 1979, plain old balloon angioplasty (POBA) has provided relief of angina for many patients. Recurrent symptoms due to restenosis diminished with bare metal stent and, more recently, drug-eluting technology. A limitation to achieving good results with POBA and stenting is calcification within the artery, which can not only prevent passage of balloons and stents into a lesion but may also prevent adequate lumen expansion. Rotational atherectomy or rotablation can treat highly resistant calcified plaque within coronary arteries to allow adequate vessel expansion and ensure optimal stent deployment. The concept of using a high-speed diamond-tipped drill spinning at 150,000 rpm driven by compressed air to clear an artery that is 3 mm in diameter is challenging, yet this technique has been available for use in coronary arteries since 1989 when Bertrand (Lille, France) and Erbel (Essen, Germany) first used it in humans.

Do You Name Speedy Objects Faster Than Slow Objects: SPEEDED NAMING OR NAMING SPEED? THE AUTOMATIC EFFECT OF OBJECT SPEED ON PERFORMANCE

2018 ◽  
Author(s):  
Moshe Shay Ben-Haim ◽  
Eran Chajut ◽  
Ran Hassin ◽  
Daniel Algom
Keyword(s):  
High Speed ◽  
Mental Representations ◽  
Reading Aloud ◽  
Naming Task ◽  
Naming Speed ◽  
Low Speed ◽  
Everyday Objects ◽  
Pictures And Words

we test the hypothesis that naming an object depicted in a picture, and reading aloud an object’s name, are affected by the object’s speed. We contend that the mental representations of everyday objects and situations include their speed, and that the latter influences behavior in instantaneous and systematic ways. An important corollary is that high-speed objects are named faster than low-speed objects despite the fact that object speed is irrelevant to the naming task at hand. The results of a series of 7 studies with pictures and words support these predictions.

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