Beating Heart Cardioscopy: A Platform for Real-Time, Intracardiac Imaging

Mihaljević, Tomislav; Ootaki, Yoshio; Robertson, Jason O.; Durrani, Amir K.; Kamohara, Keiji; Akiyama, Mitoshi; Cingoz, Faruk; Ootaki, Chiyo; Dessoffy, Raymond; Kopcak, Michael W.; Liu, Jenny; Fukamachi, Kiyotaka

doi:10.1016/j.athoracsur.2007.09.037

Cited by 14 publications

(10 citation statements)

References 9 publications

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“…To solve this problem in other previous publications, an impressive transapical in vivo endoscopic imaging of the mitral and tricuspid valves has been described. 8,10,11 In these cases, a cardiopulmonary bypass circuit supported the systemic organ perfusion and a separate transparent fluid circuit in the left heart allowed for visualization of intracardiac structures. Anatomic structures were only described in general terms, but these publications outlined a novel approach and method for future valve repair procedures under beating heart conditions.…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7] The limitations of this approach have initiated research to provide a better visualization of the subvalvular apparatus. Experimental in situ animal procedures have been described for transapical intracardiac imaging 8,9 and mitral repairs. 10,11 In vitro animal 12 and human 13 studies have examined the functional anatomic parameters of the heart valves in the beating heart with endoscopic optics through the great vessels.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Endoscopic Anatomic Description of the Mitral Valvular Complex: a Cadaveric Study

Ruttkay¹,

Götte²,

Glasz

et al. 2014

Thorac cardiovasc Surg

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Background We compared the aortic, left atrial, and apical approaches to visualize the mitral valve with the goal to investigate the endoscopic anatomy and give exact step-bystep descriptions of these views. Materials and MethodsThe mitral valvular complex of human cadaveric fresh hearts was investigated from three approaches using 0, 30, and 70 degrees rigid endoscopic optics. In 30 cases after the removal of the hearts, the endoscopes were introduced directly into the aortic root through an aortotomy, left atrium through a standard atriotomy, and apex of the heart through a transmural incision. In 10 cases, the in situ visualization was performed using standard surgical approaches, such as partial upper ministernotomy, right and left minithoracotomy. The investigation was performed first with the mitral valve open, then the left ventricle was filled with saline, and the valve was closed by clamping the aorta. Results For the visualization of ventricular surfaces of the mitral leaflets and the subvalvular apparatus, the apical approach was most optimal. The aortic approach had limitations at the posterior leaflet. Using the atrial approach, we did not obtain any direct visual information about the subvalvular apparatus with the valve closed. The atrial surfaces of the leaflets were best visible using both the atrial and apical approaches with the mitral valve open. In the case of a closed valve, the apical approach did not allow for an investigation of the atrial surfaces. The aortic approach was useful to visualize the atrial surface of the posterior leaflet with an opened valve. Conclusion In mitral valve repairs through the left atrium, an additional aortic or apical view could be useful to obtain functional information about the subvalvular apparatus by the sealing probe.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative Endoscopic Anatomic Description of the Mitral Valvular Complex: a Cadaveric Study

Ruttkay¹,

Götte²,

Glasz

et al. 2014

Thorac cardiovasc Surg

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“…Beating heart approaches were performed by using two separate circles: a transparent solution circulation for the left heart and the conventional extracorporal hemocirculation for peripheral organ perfusion. 1,2 Mitral clip fixations were performed on the beating heart with flexible instruments. 3 In other cases, off-pump endoscopic visualization of mitral valve apparatus structures was possible by using a convex plexiglass covered optic.…”

Section: Introductionmentioning

confidence: 99%

Experimental Transapical Endoscopic Ventricular Visualization and Mitral Repair

Ruttkay

Czesla²,

Nagy

et al. 2014

Thorac cardiovasc Surg

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“…3,4 Due to difficulties with visualization through blood, development of systems for live intracardiac videoscopy have been limited. 5 We developed an ex vivo model allowing visualization of the IC from within the ventricle that is currently being utilized to study IC design and function.A non-beating, ex vivo, asanguineous ovine cardiac model was designed, as shown in Figure 1A. Fresh 8-to 10-month-old ovine hearts were obtained from a slaughterhouse (Zrile Meat, West Middlesex, PA).…”

mentioning

confidence: 99%

mentioning

confidence: 99%