Rhythm for questions 1316 * 13. PR Interval 0.08sec 0.16sec 0.22sec None of the above * 14 . QRS Interval 0.08sec 0.16sec 0.22sec none of the above15.QT Interval 0.10sec0.20sec0.40sec None of the above * 16. ST Segment normal elevated depressed none of the above.