Analisis praktik residensi keperawatan medikal bedah pada pasien gangguan sistem kardiovaskular dengan pendekatan teori Adaptasi Roy di Rumah Sakit Jantung dan Pembuluh Darah Harapan Kita Jakarta = The Analysis of surgical medical nursing residency practices in patients with cardiovascular system disorders with the Roy Adaptation theory approach at National Cardiac Center Harapan Kita Hospital