Analisis praktik residensi keperawatan medikal bedah pada pasien gangguan sistem kardiovaskular dengan pendekatan teori model care,core,cure lydia e hall di Rumah Sakit Pusat Jantung Nasional Harapan Kita Jakarta = Analysis of medical surgical nursing clinical practice of residency on patients with cardiovascular disease using lydia's e-hall, care, core, cure model theory in National Cardiovascular Center Harapan Kita Jakarta