Explanation of the characteristics of a smooth and uneven pulse

Doctors say that when the pulse is uneven, the irregularities occur either in many beats or in one beat. A pulse that is uneven in one beat is uneven either in many parts, that is, when struck on different fingers, or in one part, that is, when struck on one finger. A pulse that is uneven with many beats includes an uneven pulse that changes gradually and smoothly. With such unevenness, the pulse begins with a beat of a certain value and goes on to a beat of greater or lesser value, and so continues until it reaches the limit of decrease or the limit of increase through gradual, similar changes. Then this process stops, and the pulse returns to its original value, either immediately or gradually moving away from the minimum or maximum value to the original value. In both cases, the retreat is either similar in its stages, or dissimilar, after the pulse goes from the beginning of the cycle in the above manner to its end in the same way.

Sometimes the pulse reaches the limit of its original value, sometimes the change is interrupted earlier, and sometimes it goes beyond the limit.

If change stops, sometimes it stops halfway through an interruption, and sometimes something different from stopping happens, namely, midway through movement occurs. An intermittent pulse is an uneven pulse when you expect movement, but there is immobility, and a pulse that has movement in the middle is an uneven pulse when you expect immobility, but movement occurs.

As for the unevenness of the pulse in many parts of one beat, such unevenness is manifested either in the arrangement of parts of the vessel, or in the movement of its parts. Unevenness in the arrangement of parts is unevenness in the relationship of the parts of the vessel to the direction; Since there are six directions, there are just as many irregularities.

Unevenness in the movement of the pulsation is manifested either in speed and slowness, or in lag or advance, that is, when a part moves ahead of time or later than it should, or in strength and weakness, or in large or small magnitude, and all this occurs either in in an even order, or in an uneven order, increasing and decreasing, and takes place either in two parts, or in three, or in four. I mean where the fingers are hit. All you have to do now is add and combine these irregularities.

As for the unevenness of the pulse in one part, this includes an intermittent pulse, a returning pulse, and a continuous pulse. Intermittent is a pulse that is interrupted in one part of the beat by a true interruption, and the ends of the part of the beat separated by the interruption diverge in relation to speed, slowness and mutual similarity.

A returning pulse is one when a large pulse becomes small in one part, then gradually returns to its original value. The same kind of pulse is “fused”, when one beat due to unevenness is similar to two beats or two beats are similar to one beat, since they merge. This definition changes depending on the opinions of people who disagree on this point.

A continuous pulse is one in which the unevenness increases continuously and no boundary is felt in the transition from speed to slowness, and vice versa, or to balance, or to unevenness from balance in these two respects, or the transition from great or small dignity, or from balance to any other quality to which a transition is possible. Sometimes the blow is the same throughout its entire length, and sometimes it happens that, despite the continuity, the unevenness in some parts of the blow is stronger, in others less.