Answer: ECG
ECG is a crossword puzzle answer that we have spotted 58 times.
    - Hosp. readout
 
    - Ticker tape?: Abbr.
 
    - Ticker tape, for short?
 
    - Thing that keeps track of the beat?: Abbr.
 
    - Heart chart: Abbr.
 
    - Beat recorder: Abbr.
 
    - Heart chart (abbr.)
 
    - Heartbeat chart (abbr.)
 
    - Hosp. printout
 
    - ER test
 
    - Beat record: Abbr.
 
    - Ticker tape maker?: Abbr.
 
    - Hosp. chart
 
    - Arrhythmia detector, briefly
 
    - Heart printout, for short
 
    - A hosp. readout
 
    - Willem Einthoven's heart analysis invention
 
    - Heart test, briefly
 
    - Lines from the heart, briefly
 
    - Heart meas.
 
    - Flatline indicator: Abbr.
 
    - Part of a stress test
 
    - Ticker tape, briefly?
 
    - Ticker tape, briefly?
 
    - Lines coming from the heart, briefly?
 
    - Heart dr.'s order
 
    - Heart test's printout, briefly
 
    - Heart lines: Abbr.
 
    - Heart doctor's acronym
 
    - Heart chart
 
    - Med. test
 
    - Hosp. heart exam
 
    - Heart chart, for short
 
    - Hosp. test
 
    - Heart exam: Abbr.
 
    - Med. recording
 
    - Heart test: Abbr.
 
    - 12-lead test
 
    - Cardio chart
 
    - Hospital instr.
 
    - Heart monitor, for short
 
    - Cardiologist's chart: abbr.
 
    - Hosp. procedure with a readout
 
    - Heartbeat record, for short
 
    - Part of some physicals: Abbr.
 
    - Heart specialist's reading, for short
 
    - Cardio readout
 
    - Common ER test
 
    - Lines at a hosp.
 
    - What changes in a heartbeat?: Abbr.
 
    - Heart readout: Abbr.
 
    - Heartbeat recording: Abbr.
 
    - Heart test, for short
 
    - Apple Watch med. app
 
    - Medical procedure, for short
 
    - Certain heart reading for short
 
    - Heart test inits.
 
    - Heartbeat check, for short