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PQRST are the sixteenth through twentieth letters of the ISO basic Latin alphabet and may be used to refer to that alphabet as a whole.

PQRST may refer to:

  • The PQRST method, a method of studying
  • OPQRST, a mnemonic initialism used by persons performing first aid, omitting O for Onset of the event
  • The part of the Alphabet song
  • One complete heartbeat in the ECG (P-wave, QRS complex, T-wave)