to assess the effect of a care intervention focused on meeting the needs of family members of surgical patients during the surgery waiting time, when compared to conventional care.a study with a quasi-experimental design that was developed from December 2019 to February 2020 and included 313 family members (Intervention Group=149 and Control Group=164) from a private hospital. The intervention consisted in four moments: "knowing the surgical environment and process", "information when the surgery starts", "information when the surgery ends", and "family-patient reunion". The "satisfaction" variable was assessed through the "Patient Satisfaction with Nursing Care Quality Questionnaire" instrument. The data were analyzed using descriptive and analytical statistics. The study observed the ethical principles in research.the family members in the Intervention Group presented greater satisfaction with Nursing care, 90.07(9.8), when compared to the Comparison Group, 78.72(16.38), with an 11.35-point increase(p=0.000).the results showed that the families that received the intervention on the patient's status during the surgery waiting time were more satisfied with Nursing care in comparison to the conventional intervention.