scholarly journals Ablation of Ventricular Tachycardia Originating From the Papillary Muscle of the Left Ventricle Early After Heart Transplantation

2014 ◽  
Vol 7 (1) ◽  
pp. 223-224 ◽  
Author(s):  
Vivek Iyer ◽  
Arthur Reshad Garan ◽  
Donna Mancini ◽  
Hasan Garan ◽  
William Whang
Keyword(s):  
Ventricular Tachycardia ◽  
Left Ventricle ◽  
Heart Transplantation ◽  
Papillary Muscle

Brugada syndrome unmasked by left ventricle posteromedial papillary muscle ventricular tachycardia: Coincidence or consequence

2021 ◽  
Author(s):  
Javier Pinos ◽  
Tiago Luiz Luz Leiria ◽  
Bernardo Boccalon ◽  
Marcelo Lapa Kruse ◽  
Gustavo Glotz De Lima
Keyword(s):  
Ventricular Tachycardia ◽  
Left Ventricle ◽  
Papillary Muscle ◽  
Brugada Syndrome

scholarly journals P635 Echocardiographic-fluoroscopic fusion imaging: a new technology applied in pediatric ventricular tachycardia ablation

2020 ◽  
Vol 21 (Supplement_1) ◽  
Author(s):  
P Jone ◽  
M Runciman ◽  
K K Collins
Keyword(s):  
Ventricular Tachycardia ◽  
Left Ventricle ◽  
Papillary Muscle ◽  
New Technology ◽  
Lateral Wall ◽  
Fusion Imaging ◽  
Left Ventricular ◽  
Transseptal Puncture ◽  
Ablation Catheter ◽  
Ventricular Tachycardia Ablation

Abstract Introduction Eleven-year-old male presented with nonsustained ventricular tachycardia presented for ablation of ventricular tachycardia located on the left lateral wall that is likely associated with anterolateral papillary muscle. Although he was asymptomatic, his atria have become dilated over time thus he was scheduled for a catheter ablation. Echocardiographic-fluoroscopic fusion imaging has shown transseptal puncture using this technology is safe and required less time in crossing the atrial septum; however, fusion imaging with 3D echocardiography overlay of left ventricular papillary muscle onto fluoroscopy has not been used in ventricular tachycardia ablations. Purpose The purpose of this clinical case was to evaluate the application of this new technology of echocardiography-fluoroscopy fusion imaging to guide left ventricular tachycardia ablation. Methods Echocardiographic-fluoroscopic fusion imaging was used for transseptal puncture and a 3D echocardiographic image of the left ventricle with anterolateral papillary muscle was overlaid onto fluoroscopy (Figure 1). The radiofrequency catheter was used to ablate the left anterolateral papillary muscle. With fused imaging, the ablation catheter was seen at the left anterolateral papillary muscle, and care was taken to prevent perforation of the lateral wall of the left ventricle. Results With fusion imaging of the left anterolateral papillary muscle overlaid onto fluoroscopy, the lateral wall of the left ventricular was also delineated. The catheter was easily visualized with fusion imaging to prevent perforation of the left ventricle while radiofrequency ablation was performed (Figure 1). Discussion 3D echocardiography provides excellent soft tissue definition of the lateral wall of the left ventricle and papillary muscle while fluoroscopy provides clear visualization of the ablation catheter. The ability of fusion imaging to overlay the 3D echocardiographic images onto fluoroscopy allowed for easy visualization of the anterolateral papillary muscle while the radiofrequency ablation was performed to avoid lateral wall perforation of the left ventricle. Future studies of echocardiographic-fluoroscopic fusion imaging should evaluate the potential to reduce procedure time and improve patient outcomes. Abstract P635 Figure.

scholarly journals Ventricular Tachycardia Originating From the Posterior Papillary Muscle in the Left Ventricle

2008 ◽  
Vol 1 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Harish Doppalapudi ◽  
Takumi Yamada ◽  
H. Thomas McElderry ◽  
Vance J. Plumb ◽  
Andrew E. Epstein ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Left Ventricle ◽  
Papillary Muscle ◽  
Posterior Papillary Muscle

Surgical methods of treatment of chronic heart failure and their place in modern clinical recommendations

2020 ◽  
Vol 22 (4) ◽  
pp. 183-191
Author(s):  
O. T. Kotsoeva ◽  
A. V. Koltsov ◽  
V. V. Tyrenko ◽  
A. A. Ialovets
Keyword(s):  
Quality Of Life ◽  
Heart Failure ◽  
Chronic Heart Failure ◽  
Left Ventricle ◽  
Heart Transplantation ◽  
Mechanical Circulatory Support ◽  
Circulatory Support ◽  
Surgical Methods ◽  
The Moment

This review discusses a number of aspects of surgical methods for treating severe chronic heart failure: resynchronizing therapy, mechanical circulatory support systems, and heart transplantation. Surgical methods for the treatment of heart failure are a rapidly developing field of modern cardiology and cardiac surgery. The main surgical method of treatment was and remains orthotopic transplantation of a donor heart. The advent of implantable systems has affected the problem of heart transplantation. Over the past decade, the use of mechanical circulatory support systems has grown significantly. At the moment, there are 3 main directions: creating devices for auxiliary blood circulation, various modes and methods of electrical stimulation of the myocardium, creating devices that mechanically remodel the heart chambers (left ventricle). All of these directions to some extent (depending on the evidence base) have found their place in modern recommendations for the treatment of chronic heart failure. The use of mechanical left ventricular remodeling shows good results in patients suffering from symptomatic heart failure, which leads to a significant and persistent decrease in the volume of the left ventricle and improvement of its function, symptoms and quality of life. Despite the fact that at the moment the geography and prevalence of their use is small, the number of implanted devices will only grow. Thus, given the need for frequent hospitalizations and high treatment costs, it is necessary to improve modern methods of surgical treatment of severe and terminal heart failure, make them more accessible, which will affect the duration and quality of life of these patients.

Inter-Basal and Septal Connections of Papillary Muscles - An Anatomical Rationale for Rhythmic Opening of AV Valves - A Multicentric Medical College Based Cross Sectional Study

2021 ◽  
Vol 8 (31) ◽  
pp. 2865-2869
Author(s):  
Praveen Mulki Shenoy ◽  
Amith Ramos ◽  
Narasimha Pai ◽  
Bharath Shetty ◽  
Aravind Pallipady Rao
Keyword(s):  
Left Ventricle ◽  
Papillary Muscle ◽  
Interventricular Septum ◽  
Cross Sectional Study ◽  
Papillary Muscles ◽  
Cross Sectional ◽  
Medical College ◽  
Moderator Band ◽  
Almost All ◽  
And Function

BACKGROUND The papillary muscle basal connections have significant clinical implications. Variety of studies done on its morphology and function by various specialists in different departments. A close look on these revealed the interconnections of papillary muscles to one another and to the interventricular septum of both ventricles is related to uncoordinated contractions of papillary muscles, leading to hyper or hypokinesia or prolapse or even its rupture. METHODS Our study done in 25 formalin soaked hearts revealed after the deep and meticulous dissection, reflecting the walls of ventricles laterally the numerous interconnections of papillary muscles at its bases and IVS. Ventricles are opened by inverted ‘L’ shaped incision and its reflected more laterally till all the papillary muscles is visible in one frame after incising the moderator band. The connections were noted, measured, photographed, tabulated, compared with similar studies and analysed with experts with respective fields. RESULTS Almost all the specimens did have the interconnections. Further the post mortem findings of the cardiac related deaths with involvement of papillary muscles suggest damage to such ‘bridges’. The moderator band extensions to the base of right APM, and its extension to the posterior groups is noted in all the specimens. The bridge from the IVS to bases of both the groups of papillary muscles is noted in left ventricle. In90% of specimens the one PPM is found to be loosely connected, more so in left ventricle. CONCLUSIONS We are of a conclusion that such basal interconnections and to the interventricular septum are responsible for rhythmic contractions of papillary muscles of both ventricles. Since the AV valves have to open simultaneously, interconnections becomes mandatory as the impulse has to reach it before it reaches the trabeculae carniae. One of the Posterior papillary muscles is loosely connected to other papillary muscles, may be the reason for its rupture, more so in left ventricle. KEYWORDS Papillary Muscle, Interbasal Connection, Moderator Band, Valvular Prolapse, AV Valves

Measurements of Mean Velocity and Turbulent Statistics in a Centrifugal Blood Pump

2002 ◽  
Author(s):  
Steven W. Day ◽  
James C. McDaniel ◽  
Phillip P. Lemire ◽  
Houston G. Wood
Keyword(s):  
Blood Flow ◽  
Left Ventricle ◽  
Heart Transplantation ◽  
Mechanical Design ◽  
Left Ventricular ◽  
The Body ◽  
Western World ◽  
Mean Velocity ◽  
Centrifugal Blood Pump ◽  
Turbulent Statistics

An estimated 150,000 patients in the Western World require heart transplantation every year, while only 4,000 (2.5%) of them actually receive a donor heart [1]. This lack of available donors for heart transplantation has led to a large effort since the 1960s to develop an artificial mechanical heart as an alternative to heart transplant. Most end stage cardiac failures result from cardiac disease or tissue damage of the left ventricle. After this failure, the ventricle is not strong enough to deliver an adequate supply of oxygen to critical organs. A left ventricular assist device (LVAD) is a mechanical pump that does not replace the native heart, but rather works in concert with it. An LVAD can effectively relieve some strain from a native heart, which has been weakened by disease or damage, and increase blood flow supplied to the body to maintain normal physiologic function. The inlet to the LVAD is attached to the native left ventricle, and the output of the assist pump rejoins the output of the native heart at the aorta, as shown in Figure 1. Blood flow from both the aortic valve and the assist pump combine and flow through the body. The clinical effectiveness of LVADs has been demonstrated; however, all of the currently available pumps have a limited life because of either the damage that they cause to blood or their limited mechanical design life.

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