The superiority of the two-thumb over the two-finger technique for single-rescuer infant cardiopulmonary resuscitation

Objectives The two-finger technique (TFT) using the index-middle fingers of the right hand (TFT-R23) was recently confirmed to produce deeper chest compression depth (CCD) compared with the TFT using any other fingers. This study was carried out to confirm whether the TFT-R23 would be as effective as the two-thumb technique (TTT). In addition, individual finger strengths were measured to identify the reasons why the TTT and TFT-R23 produced deeper CCD than any other methods. Methods This prospective randomized cross-over trial compared TTT with TFT-R23. A total of 37 doctors conducted 2 min single-rescuer cardiopulmonary resuscitation using TTT and TFT-R23 in a random order using a 3-month-old sized infant manikin laid on the floor. The chest compression to ventilation ratio was set to 15 : 2. In addition, finger strengths were measured using a pinch meter. Results The actual CCD of the TTT was significantly deeper than that of the TFT-R23 (41.3±1.3 vs. 39.8±1.5 mm, P

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