A two-year study of 118 Malawian children with rheumatic heart disease found that malnutrition dramatically increases mortality risk, with moderate malnutrition carrying a 7.41-fold higher death rate and mild malnutrition showing a 3.92-fold increase. Nearly a quarter of children died during follow-up, with pericardial effusion conferring the highest risk (6.96-fold increase) and living more than 40 kilometers from tertiary care doubling mortality risk. This research illuminates the intersection of poverty, nutrition, and cardiovascular outcomes in pediatric populations. Rheumatic heart disease, largely eliminated in developed nations through improved living conditions and antibiotic access, remains a leading cause of acquired heart disease in children from low-resource settings. The findings suggest that addressing malnutrition could be as critical as cardiac interventions for improving survival. The study's focus on distance from care highlights how geographical barriers compound health disparities. However, as a preprint awaiting peer review, these results require validation before informing clinical practice. The research represents important epidemiological work documenting how social determinants of health profoundly impact cardiovascular mortality in vulnerable pediatric populations.