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Figure 9: Visualization of the coronary sinus is critical for safe passage and positioning of retrograde coronary sinus catheter. Transesophageal echocardiography is the most commonly used modality, however fluoroscopy can also be used effectively

Figure 9: Visualization of the coronary sinus is critical for safe passage and positioning of retrograde coronary sinus catheter. Transesophageal echocardiography is the most commonly used modality, however fluoroscopy can also be used effectively