Analisis praktik residensi keperawatan medikal bedah pada pasien gangguan sistem kardiovaskular dengan pendekatan teori self-care orem di Rumah Sakit Jantung dan Pembuluh Darah Harapan Kita Jakarta = Analysis of medical surgical nursing residency specialist practice patients cardiovascular disorders with self-care orem approach at National Cardiovascular Center Harapan Kita Jakarta