In the 2021 European Resuscitation Council (ERC) guidelines, cardiac arrest (CA) is defined as the absence of breathing or the presence of agonic breathing [1]. Although there is a concern that detecting the presence or absence of a pulse during a pulse check is time-consuming, a quick 10-s pulse check is recommended in the American Heart Association (AHA) guidelines [2]. However, in both guidelines, it is recommended to manually check for a pulse in 10-s intervals, every 2 min [1,2].

Accepting pulse control as a vital sign has been criticized in many studies in terms of personal skill, reliability, and objectivity [[3], [4], [5]]. The reliability of the method is still controversial [1,2]. In recent studies, researchers compared Doppler USG with pulse checks [[5], [6], [7], [8]]. Some studies have indicated that end-tidal CO2 (ETCO2) is a good indicator of ROSC [[9], [10], [11], [12], [13]]. However, none of these methods have proven to be ideal.

CPC, which is palpated when heart massages are paused for 10 s, causes a waste of time in accurately feeling and detecting the localization of the pulse, even for the most experienced practitioners. As an alternative to this method, we palpate the femoral pulse while the heart massage continues, feel its location and pulse fullness without taking a break for 10 s, and check whether the pulse continues when the heart massage is interrupted. We predict that we will be able to detect the presence or absence of a pulse more accurately and in a shorter time with continuous femoral pulse check (CoFe PuC).