Pulse Detection with 4-20MA

i have to detect pulse from wrist. i am using pulse sensor that i have interfaced to arduino. i am using labview to read the analog voltage.

i wanted to measure the frequency of a minute pulse variation also from analog voltage?

should i use 4-20MA current Receiver or not???

This questions is quite confusing.
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Hey any 4-20mA sensor which detect the human pulse rate I have search this sensor would it be be ok to get connected with 4-20mA Current Receiver Board ??
and can you tell me how this board will works any basic schematic??