Takafumi Okuyama
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View article: High-power short-duration setting prevents changes of periprocedural thrombotic markers and the onset of silent stroke in patients with atrial fibrillation
High-power short-duration setting prevents changes of periprocedural thrombotic markers and the onset of silent stroke in patients with atrial fibrillation Open
The HP-SD setting led to a shorter left atrial dwelling time and reduced change in thrombotic markers, resulting in lower prevalence of SS.
View article: Relationship between the atrial‐activation pattern around the triangle of Koch and successful ablation sites in slow‐fast atrioventricular nodal reentrant tachycardia
Relationship between the atrial‐activation pattern around the triangle of Koch and successful ablation sites in slow‐fast atrioventricular nodal reentrant tachycardia Open
Background The precise details of atrial activation around the triangle of Koch (ToK) remain unknown. We evaluated the relationship between the atrial‐activation pattern around the ToK and success sites for slow‐pathway (SP) modification a…
View article: Response to the Letter by Frumkin Regarding the Article, "Dramatically Improved Severe Pulmonary Arterial Hypertension Caused by Qing-Dai (Chinese Herbal Drug) for Ulcerative Colitis"
Response to the Letter by Frumkin Regarding the Article, "Dramatically Improved Severe Pulmonary Arterial Hypertension Caused by Qing-Dai (Chinese Herbal Drug) for Ulcerative Colitis" Open
Response to the Letter by Frumkin Regarding the Article, "Dramatically Improved Severe Pulmonary Arterial Hypertension Caused by Qing-Dai (Chinese Herbal Drug) for Ulcerative Colitis"We deeply thank Dr. Frumkin for the comments on our case…
View article: Unipolar-voltage-based evaluation of left atrial tissue properties and ablation outcome in patients with atrial fibrillation
Unipolar-voltage-based evaluation of left atrial tissue properties and ablation outcome in patients with atrial fibrillation Open
Aims The relationship between local unipolar voltage (UV) in the pulmonary vein (PV)-ostia and left atrial wall thickness (LAWT) and the utility of these parameters as indices of outcome after atrial fibrillation (AF) ablation remain uncle…
View article: Comparison of heart rate and cardiac output of <scp>VVI</scp> pacemaker settings in patients with atrial fibrillation with bradycardia
Comparison of heart rate and cardiac output of <span>VVI</span> pacemaker settings in patients with atrial fibrillation with bradycardia Open
Background While most VVI pacemakers in bradycardic patients are set to a low limit of 60/min, the optimal lower limit rate for VVI pacemakers in atrial fibrillation has not been established. Although an increase in heart rate within the n…
View article: Dramatically Improved Severe Pulmonary Arterial Hypertension Caused by Qing-Dai (Chinese Herbal Drug) for Ulcerative Colitis
Dramatically Improved Severe Pulmonary Arterial Hypertension Caused by Qing-Dai (Chinese Herbal Drug) for Ulcerative Colitis Open
Pulmonary arterial hypertension (PAH) is a rare and fatal disease for which some causative drugs have been developed. Qing-Dai is a Chinese herbal drug that is sometimes used as a specific treatment for ulcerative colitis in Asia, includin…
View article: Syncope after COVID-19 Vaccination in a Young Man with Unmasking Brugada Syndrome
Syncope after COVID-19 Vaccination in a Young Man with Unmasking Brugada Syndrome Open
A 23-year-old man with no significant medical history was rushed to a hospital due to transient loss of consciousness with incontinence. The patient had developed a fever after his second dose of coronavirus disease 2019 (COVID-19) vaccine…
View article: Usefulness of Optimization of Interventricular Delay Using an Electrical Cardiometry Method in Patients with Cardiac Resynchronization Therapy Implantation
Usefulness of Optimization of Interventricular Delay Using an Electrical Cardiometry Method in Patients with Cardiac Resynchronization Therapy Implantation Open
There are no studies examining interventricular (VV) delay optimization by an electrical cardiometry method in relation to subsequent cardiac function in cardiac resynchronization therapy (CRT) -implanted patients. This study aimed to comp…
View article: Sleep Rate Mode of Pacemaker-Dependent Patients with Sick Sinus Syndrome Increases Dipper Blood Pressure and Dipper Heart Rate Patterns
Sleep Rate Mode of Pacemaker-Dependent Patients with Sick Sinus Syndrome Increases Dipper Blood Pressure and Dipper Heart Rate Patterns Open
Cardiovascular event rates of patients with a dipper blood pressure (BP) and dipper heart rate (HR) pattern are lower than those of patients with nondipper BP and HR patterns. However, how the pacemaker mode affects the diurnal BP and HR p…
View article: Noteworthy Cardiovascular Involvement with Sporadic Late-onset Nemaline Myopathy
Noteworthy Cardiovascular Involvement with Sporadic Late-onset Nemaline Myopathy Open
Cardiac involvement has recently been the focus of sporadic late-onset nemaline myopathy (SLONM). However, right ventricular failure and pulmonary hypertension, in addition to repetitive cardiac arrest, are noteworthy characteristics of SL…