Mindfulness-Based Nursing Care and Anxiety in Open Heart Surgery Patients

Inclusion Criteria: * Having a planned elective open heart surgery * Being able to communicate in Turkish and understand the given instructions * Being conscious, cooperative and oriented * Having agreed to participate in the research in the preoperative period * Being extubated and hemodynamically stable in the postoperative period Exclusion Criteria: * Patients with pre-existing serious psychiatric illnesses (e.g., schizophrenia, bipolar disorder) * Patients with cognitive impairment or those unable to complete the STAI-S scale * Patients with neurological or sensory problems that impair hearing, speech, or communication * Patients requiring long-term mechanical ventilation in the postoperative period * Patients requiring re-intubation in the postoperative period * Patients with hemodynamic instability or those monitored under deep sedation in the intensive care unit * Patients who develop serious postoperative complications (e.g., stroke, massive bleeding) * Patients who refuse to participate in the study or wish to withdraw from the study