Hello there,,,please avoid taking your own BP...also let me tell you the digital BP machines now available in markets may not give correct reading all the time....also your BP readings vary when you have had food,if u r stressed, or had a walk/activity.... my advice to you is if at all you are tensed regarding your BP levels...do visit a Physician and get it checked. By the way i like your knowledge regarding Kortokoff sounds....very few people would know about it. Regards & take care.

In my opinion, you shouldn't rather measure your bp on your own. Apprehension has known to vary results when measured by oneself. You could rather go for good automated bp measuring machines, which have reasonable accuracy.

Hello..... If you observe carefully you hear sound at one point... This type of variation in measurement is common because different factors affect measurement like tightness of cuff, technique you use.. Person's experience all these amounts.. Mercury level at which sound appears is systolic and level at which sound disappears is diastolic blood pressure.