A: Up to 40% of patients experience an increase in blood pressure while at the physician’s office. The BpTRU is designed to eliminate or reduce this ‘white coat effect’ by discarding the first reading and averaging the remaining five. The BpTRU also helps eliminate other influencing factors such as, digit preference, background noise and distractions.Please see Use of automated BP measurement to reduce white coat response (CCC 2007) for advice on obtaining accurate BP measurements.