Is Valsalva maneuver an alternative to use tenaculum for endometrial sampling procedure in cases where the cervix cannot be passed spontaneously with pipelle? A randomized study.
Narin R, Uysal G, Baş S, Narin MA, Küçükbingöz EG.
Postural modification to the standard Valsalva manoeuvre for emergency treatment of supraventricular tachycardias (REVERT): a randomised controlled trial.
Appelboam A, Reuben A, Mann C, Gagg J, Ewings P, Barton A, Lobban T, Dayer M, Vickery J, Benger J; REVERT trial collaborators.
Lancet. 2015 Oct 31;386(10005):1747-53. doi: 10.1016/S0140-6736(15)61485-4. Epub 2015 Aug 24.