Keperawatan medikal bedah merupakan bidang praktik khusus dalam keperawatan profesional yang fokus dalam perawatan respon pasien terhadap masalah kesehatan aktual maupun potensial. Clinical nurse specialist (CNS) didefinisikan sebagai clinical leader dalam praktik keperawatan yang memiliki pengetahuan dan keterampilan tingkat lanjut seperti keahlian klinis dalam bidang tertentu, praktik berbasis bukti, kolaborasi, konsultasi, edukator, mentoring, dan manajemen. Peran CNS meliputi direct patient care, nursing practice, dan organization atau system. Peran perawat direct patient care diterapkan pada 31 pasien kasus kardiovaskuler baik medikal maupun bedah dengan pendekatan Model Adaptasi Roy. Hasil analisis praktik menunjukkan bahwa Model Adaptasi Roy dapat diterapkan dalam memberikan asuhan keperawatan pasien dengan gangguan sistem kardiovaskuler. Penerapan peran perawat nursing practice, yaitu perawat menerapkan praktik yang berbasis bukti (evidence) adalah efektivitas cold therapy sebelum latihan napas dalam (deep breathing) dan batuk efektif (coughing) terhadap nyeri akut pada pasien post cardiac surgery. Penerapan peran perawat organisation atau system, yaitu perawat membuat pengembangan profesional melalui inovasi terbaru untuk perkembangan asuhan keperawatan dengan menyusun SPO rehabilitasi jantung fase 1 pada pasien sindrom koroner akut (SKA).

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Medical surgical nursing is a special area of nursing profesional practice that focuses on the care of patient s response to actual and potential health problems. Clinical nurse specialist (CNS) is defined as a clinical leader in nursing practice that has advance knowledge and skill such as clinical expertise in a particular area, evidence-based practice, collaboration, consulting, eduvator, menoting, and management. The role of CNS included direct patient care, nursing practice, and organization or system. The role as a direct patient care was applied to 31 cardiovascular patients both medical and surgical with the Roy s Adaptation Model approach. The result of practice analysis showed that Roy s Adaptation Model could be applied in providing nursing care in cardiovascular disease. The application of nursing practice nursing role, that nurse applied evidence-based practice that was effectiveness of cold therapy before deep breathing and coughing for acute pain post cardiac surgery patient. Aplication of the role of nurse organization or system, that nurses made professional development through the innovation for the development of nursing care. It was 1st phase cardiac rehabilitation in patient with acute coronary syndrome by formed standard operational procedure (SOP).