Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.

Question: Does conscious sedation with midazolam or propofol alter left ventricular diastolic performance in patients with preexisting diastolic dysfunction : a transmitral and tissue Doppler transthoracic echocardiography study?
Answer: Sedation with midazolam or propofol does not alter indices of left ventricular diastolic function in healthy patients and those with preexisting left ventricular filling abnormalities as evaluated by transthoracic echocardiography.
no