Suitability of a Low-Fidelity and Low-Cost Simulator for Teaching Basic Cardiopulmonary Resuscitation—“Hands-Only CPR”—To Nursing Students

<b>Objectives:</b> The objectives of this study were to determine the suitability of the low-fidelity/low-cost simulator "Salvando a Rosita^®" in the acquisition of "hands-only CPR" skills by adult nursing degree students. <b>Methods</b>: A quasi-experimental quantitative study was carried out with a single experimental group that included 89 nursing degree students; it was conducted in November and December 2024 at the National University of Trujillo, Peru. <b>Results</b>: The STAI-TA score was 17.30, and the STAI-SA score was 37.00 points. Women showed a greater level of SA (<i>p</i> = 0.002). The required effort was described by women as being high and by men as light (<i>p</i> < 0.001). The compression rate was 125.7, and the percentage of compressions with an adequate depth was 89.6%. Overweight/obese individuals achieved more correct compressions (<i>p</i> < 0.01). The attitudes toward alerting emergency services, remaining calm while a person is in cardiac arrest, applying the CPR sequence automatically, and performing CCs were better after receiving training. The majority considered the "Salvando a Rosita^®" simulator to be useful for teaching "hands-only CPR" to students in the first cycles of a nursing degree. <b>Conclusions</b>: The "Salvando a Rosita^®" simulator was found to be an appropriate tool for teaching "hands-only CPR" to students in either the first cycles of health sciences or in other related professions.