Correction to: Switching from Warfarin to rivaroxaban induces sufficiency of vitamin K and reduction of arterial stiffness in patients with atrial fibrillation.

In the original publication of the article,one of the author's name was published incorrectly as "Takamoto Furuki".

Switching from Warfarin to rivaroxaban induces sufficiency of vitamin K and reduction of arterial stiffness in patients with atrial fibrillation.

Use of chronic vitamin K antagonist (VKA) induces a long-term deficiency of vitamin K, which may cause arterial stiffness and bone-related disease. Switching from VKA to rivaroxaban could induce rapid sufficiency of vitamin K and improvement of arterial stiffness. The K2 SUMMIT-3 study is a multicenter, open-label, prospective, and randomized design.

Zero Contrast Coronary Intervention Using Intravascular Ultrasound Guidance in a Patient with Allergy to Contrast Medium.

The occurrence of allergy to iodinated contrast in certain patients may prevent the use of percutaneous coronary intervention (PCI) in such cases. We present a 53-year-old male with a history of allergic reaction to iodinated contrast who successfully underwent intravascular ultrasound (IVUS) guided PCI. Stent size was determined based on IVUS.

Acute compartment syndrome occurring in forearm with relatively small amount of hematoma following transradial coronary intervention.

A 59-year-old female with angina pectoris successfully underwent percutaneous coronary intervention via the right radial artery. She complained of right forearm pain and numbness 4.5 h after the procedure.

A case of percutaneous coronary intervention procedure successfully bailed out from multiple complications in hemodialysis patient.

A 73 year-old male who underwent coronary artery bypass surgery (CABG) 8 years ago had PCI performed on him for a diffuse calcified stenotic lesion in the right coronary artery (RCA). Following 2.5 mm non-compliant balloon dilatation supported with a child catheter (Dio from Goodman), we implanted a stent to the distal RCA through this catheter.

Impact of chronic kidney disease on clinical and angiographic results following implantation of sirolimus-eluting coronary stents.

Although sirolimus-eluting stent (SES) is effective to reduce restenosis, the effect of SES for patients with chronic kidney disease (CKD) has been ambiguous. SES were exclusively implanted into 304 lesions in 195 patients. Forty-seven percent of the patients had diabetes.

Intravascular ultrasound criteria for determination of optimal longitudinal positioning of sirolimus-eluting stents.

Background: Several studies have indicated that the clinical outcomes of sirolimus-eluting stents (SES) are significantly associated with longitudinal positioning of the stent relative to the underlying plaque distribution.

Methods And Results: Optimal SES landing was determined using unique stepwise intravascular ultrasound (IVUS) criteria, mainly targeting the sites with plaque burden <50% (plaque area/external elastic membrane area x100). To verify the criteria, (1) achievability and (2) actual impact on clinical and angiographic outcomes were assessed.

Magnetic resonance imaging is accurate to detect bleeding in the seminal vesicles in patients with hemospermia.

Objective: To confirm the presence of hemorrhage in the seminal vesicles by aspiration in patients with findings suspicious for hemorrhage on magnetic resonance imaging (MRI); and to investigate the relationship between findings on MRI and the freshness of hemorrhage.

Methods: Twenty-six patients with hemospermia who showed high-intensity signals on T1-weighted images with or without low-intensity signals on T2-weighted images, suggesting seminal vesicle hemorrhage, were analyzed. Of the 26, 15 underwent transperineal aspiration of the seminal vesicles under transrectal ultrasound guidance to confirm the bleeding.

Functional formula to determine adequate balloon diameter of simultaneous kissing balloon technique for treatment of bifurcated coronary lesions: clinical validation by volumetric intravascular ultrasound analysis.

Background: Final kissing balloon technique (KBT) is known to alter long-term clinical outcomes for treatment of bifurcated coronary lesions. However, determination of adequate diameters of the 2 balloons remains difficult because of lack of a working index.

Methods And Results: Twenty-one cases of left main (LM)-related bifurcated lesions, treated with Cypher(TM) stents (single/crush stenting) and final KBT, were enrolled.

[Frequency and characteristics of incomplete stent apposition during and after sirolimus-eluting stent implantation].

Objectives: Incomplete stent apposition (ISA) is frequently observed after sirolimus-eluting stent (SES) implantation. This study investigated the incidence, morphological features, and possible mechanisms of this phenomenon.

Methods: Fifty-two lesions in 47 eligible patients were treated with SES and serial intravascular ultrasound (IVUS) assessment at the time of post-intervention and 8-month follow-up.

The physics of guiding catheters for the left coronary artery in transfemoral and transradial interventions.

Background: The backup force of a guiding catheter is important for successful percutaneous coronary intervention (PCI), however, no theory has been proposed thus far regarding the factors involved in its generation.

Methods And Results: The backup force of guiding catheters was measured in an arterial tree model. In vitro modeling showed that larger-sized guiding catheters had greater backup force (8 Fr > 7 Fr > 6 Fr).