The reduction in early morning blood pressure compared with average daytime pressure is referred to as the night-time dip. Ambulatory blood pressure monitoring may reveal a blunted or abolished overnight dip in blood pressure. This is clinically useful information because non-dipping blood pressure is associated with a higher risk of left ventricle hypertrophy and cardiovascular mortality.
Early morning blood pressure tends to be lower than average daytime levels, a phenomenon known as the night-time dip. Monitoring blood pressure outside of clinics might show that this nighttime drop is less pronounced or absent in some individuals. This information is clinically significant because it suggests an increased risk of heart problems such as left ventricular hypertrophy and higher chances of cardiovascular death.