To determine correlation between inferior vena cava collapsibility index (IVCCI) and brain natriuretic peptide (BNP) level to assessing one hour bundle success of septic patients treated at ICU Haji Adam Malik Hospital Medan. Methods : This study is an observational analytic study with cross-sectional survey design conducted at the Haji Adam Malik General Hospital Medan Intensive Care Unit (ICU) on 37 samples. Inclusion criteria are age d 18-65 years who admitted in ICU with sepsis, burn injury are excluded. Correlation data analysis use Spearman test with SPSS. Results : The mean inferior vena cava collapsibility index (IVCCI) in septic patients treated at ICU Haji Adam Malik Hospital Medan was 1.65 ± 0.73 with decreased in 20 people (50%), normal in 14 people (35%) and increased in 6 people (15%). Meanwhile, mean brain natriuretic peptide (BNP) level was 1.93 ± 0.26 and normal samples in 3 people (7.5%) and increase in 37 people (92.5 %). Conclusion : There is a positive correlation between inferior vena cava collapsibility index (IVCCI) and brain natriuretic peptide (BNP) to assess adequacy of stroke volume of septic patients treated in ICU Haji Adam Malik Hospital, Medan.

Keywords : inferior vena cava collapsibility index, brain natriuretic peptide, sepsis, intensive care unit