I am 39 yrs old with left bundle branch block, sinus tachycardia & high blood pressure. My Dr. Has prescribed me medicine on triolmesar 40mg, turbovas 10 mg once daily. Last 2d echo report state that: aortic root diameter: 2.7 cm aortic valve opening: 1.7cm left atrial dimension: 3.9cm left ventricular ed: 5.3cm left ventricular es: 3.9cm intrventricular septal thickness: ed: 0.9cm es: 1.3cm left vent pw thickness: ed: 0.9cm es: 1.3 cm lv ejection fraction: 60% max velocity aortic valve: 178 cms/sec mitral valve: 81/120 cms/sec pulmonary value: 130cms/sec. Please suggest whether lbbb is dangerous, as at present no breathing problem has arise to me except in high latitude once.