Table 1 Comparative efficacy of the Valsalva manoeuvre with other vagal manoeuvres by clinical study
ReferenceNo of patientsValsalva resultCSM resultDive reflex result
Mehta et al43519 (54%)8 (22%)6 (17%)
Lim et al7148(12%)(6.3%)N/A
Wen et al1013363/133 (47%)2/133 (2%)7/133 (5%)
Taylor et al17493/18 (6.1%)1/13 (2.0%)N/A

  • CSM, carotid sinus massage.