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Effect of dynamic cardiomyoplasty on phasic coronary arterial flow velocity in canine hearts  Takuro Tsukube, MD, Masayoshi Okada, MD, Tomoichiro Mukai,

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Presentation on theme: "Effect of dynamic cardiomyoplasty on phasic coronary arterial flow velocity in canine hearts  Takuro Tsukube, MD, Masayoshi Okada, MD, Tomoichiro Mukai,"— Presentation transcript:

1 Effect of dynamic cardiomyoplasty on phasic coronary arterial flow velocity in canine hearts 
Takuro Tsukube, MD, Masayoshi Okada, MD, Tomoichiro Mukai, MD, Mohammed A. Kashem, MD, Toshiaki Ota, MD  The Journal of Thoracic and Cardiovascular Surgery  Volume 108, Issue 4, Pages (October 1994) DOI: /uri:pii:S Copyright © 1994 Mosby, Inc. Terms and Conditions

2 Fig. 1 Cross-sectional representation of the dynamic cardiomyoplasty: The coronary blood flow may be adversely affected by causing compression of the coronary arteries at skeletal muscle contraction in systole (left, white arrows) and incomplete relaxation of the skeletal muscle wrap in diastole (right, white arrows). LV, left ventricle; RV, right ventricle; LAD, left anterior descending artery; LDMF, latissimus dorsi muscle flap. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

3 Fig. 2 Experimental preparation: A 3F 20-MHz Doppler ultrasonic catheter was placed at the origin of the left descending coronary artery inserted retrogradely through the first branch of left descending artery. The coronary blood flow toward the catheter tip was measured at a sampling point 3 to 4 mm from the tip. The catheter was connected to a 20 MHz Doppler system and the power spectrum of the signals was analyzed by the fast Fourier transformation (FFT) method with an FFT analyzer. Left latissimus dorsi muscle flap was then wrapped around both the left and right ventricles in a clockwise fashion. Unipolar electrodes were woven around the thoracodorsal nerve and into the midportion of latissimus dorsi muscle flap. These leads were connected to an external R wave-synchronous stimulator (cardiac stimulator BC-03). The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

4 Fig. 3 Parameters of the coronary arterial blood flow velocity. 1, Peak systolic velocity (cm/sec). 2, Peak diastolic velocity (cm/sec). 3, Systolic time-velocity integral (cm). 4, Diastolic time-velocity integral (cm). The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /uri:pii:S ) Copyright © 1994 Mosby, Inc. Terms and Conditions

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