10. 9. (continued) 6) History or presence of ventricular or atrial tachyarrhythmias. 7) Clinically significant resting bradycardia (< 50 beats per minute). 8) QTc > 480 msec on screening ECG. 9) Uncontrolled high blood pressure(>140/90), history of labile hypertension, or history of poor compliance with an antihypertensive regimen. 10) Unstable angina pectoris. 11) Symptomatic congestive heart failure.