Objective: A blunted nocturnal fall in BP( Nondipping )pattern increases cardiovascular risk and leads to target organ damage. Among hypertensive patients ambulatory blood pressure monitoring can able to detect various nocturnal blood pressure pattern. Hypertensive patient with abnormal left ventricular geometry and left ventricular function found to be blunted nocturnal fall in BP( Nondipping )pattern on ambulatory BP monitoring. Method: A group of dippers and nondippers formed consisting 50 patients in each group according to nocturnal BP pattern. More than 10% decrease in mean SBP than day time mean SBP was defined as dippers . ECHO parameter taken to calculate ,Left ventricular mass and LV geomertry and compared among both group. Results: Nondipping pattern was significantly associated with abnormal ECHO parameters of LV geometry and LV diastolic function. Enlarged left atrium , left ventricular wall thickness, LV mass and mass index were significantly associated with blunted nocturnal BP response. These patients also have more prevalent concentric left ventricular hypertrophy.