Abstract 5855: Gender Disparity in Renal Angiography for Hypertensive Patients in the United States
Background: Renovascular hypertension has a high prevalence in certain risk groups and renal angiography may be warranted to determine whether revascularization is possible. Although renal angiography may provide the golden standard for the diagnosis of malignant hypertension and renal disease, gender differences in utilization of renal angiography are not known.
Methods: We used the Healthcare Cost and Utilization Project (HCUP) to study national hospital admission rates for hypertension and renal insufficiency with procedures for renal angiography in the years 2004 –2006. Chi-square tests were used for comparison between number of women and men. A P < 0.05 was considered significant.
Result: Women had consistently higher rates of malignant hypertension during each year (59,171 (62%) vs 36,446 (38%), 2004; 56,768 (61%) vs 35,802 (39%), 2005; and 55,573 (61%) vs 36,060 (39%), 2006). The number of renal angiographies performed was very similar each year for women compared to men (37,895 (52%) vs 34,717 (48%), 2004; 32,890 (54%) vs 28,152 (46%), 2005; and 36,833 (52%) vs 34,174 (48%), 2006). The frequency of renal angiography based on malignant hypertension was significantly lower in women compared with men (64% vs 95% in 2004; 58% vs 79% in 2005; 66% vs 95% in 2006; P < 0.05).
Conclusion: Our data demonstrate a significant gender disparity in the utilization of renal angiography to diagnose renovascular hypertension in hospitalized patients. Further studies are needed to find possible reasons behind this disparity.