What is Pulse pressure(PP)? What is Proportional pulse pressure(PPP)?

• Pulse pressure = Systolic blood pressure -  Diastolic blood pressure( PP= SBP-DBP)
• It indicates pulse volume 
• Average PP is 30- 40 mmhg
• Proportional Pulse Pressure = Pulse pressure / Systolic blood pressure(PPP= PP/SBP)
• It is an indicator of LV function
• If PPP < = 25% , indicates LVF and Cardiac index <= 2.2 l/min/m2

Perception of pulse is by which receptors?

Tactile receptors - Meissener's corpuscles, Pacinian corpuscles and Merkel's discs 
mediate tactile sensation on the finger tips.