<prompt> Neurocardiogenic syncope which is true?Vasodilation and bradycardiaInitiated at lvForceful contraction of heartHeart chambers filled with blood  <response>: A Vasodilation and bradycardia Fainting due to bradycardia, heart block, or sinus arrest is called neurocardiogenic syncope. In addition, fainting is the presenting symptom in 7 of patients with myocardial infarctions. Thus, all cases of syncope should be investigated to determine the cause. 