You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All of the follwing statements regarding valsalva manoeuvre is true, EXCEPT: and explain in detail?
Valsalva maneuvre is performed by forcefully attempt to exchale against a closed glotis after taking a normal breath. When it is performed intrathoracic pressure increases, increaing both end diastolic and end systolic ventricular pressure. There is decreased ventricular filling and cardiac output. This causes sound diminishing in intensity in most of the cardiac murmurs. The only two murmurs that will increase in intensity with valsalva maneuver is Murmur of hyperophic cardiomyopathy Murmur of mitral valve prolapse Ref: Primary Cardiology, edited by Eugene Braunwald, 2nd Edition, Page 156.