The Slow Pulse (Chi Mai)


Slow Pulse (<60 bpm) (遲脈 Chi Mai)

key point: slow

Indications: (forceful) cold accumulation: cold causes constriction and contraction leading to slowed movement.

(Forceless) deficiency cold: cold causes constriction and contraction leading to slowed movement.

(Forceless) qi deficiency: qi commands the blood.

Explanation: cold has the tendency to constrict and contract. This affects the blood flow and thus impedes the blood circulation resulting in the slow pulse.

Another way of thinking about this is the speed of the pulse is widely considered a function of the Heart yang, so we have to think of the (forceful) slow pulse as indicating another obstruction of yang qi. In the case of the forceful slow pulse, the forceful suggests an excess type pathogenic factor obstructing the natural movement of yang qi.

Should the slow pulse also be forceless, lack of warm yang results in cold causing the vessels again to constrict and contract slowing down the pulse.

An equally well-stated mechanism for the (forceless) slow pulse rate is that a deficiency of yang qi will again result in a lack of Heart pumping action and the slow pulse.

p.slow The Slow Pulse (Chi Mai)

The Slow Pulse

4.1.44.table The Slow Pulse (Chi Mai)

Comparison of Slow and Moderate Pulses

Next: the moderate pulse.

Last modified: August 8, 2009  Tags: ,  ·  Posted in: Pulse Class, Pulse-Palpation