Arterial stiffness is an emerging indicator of cardiovascular risk, but its causal relationship with a variety of age-related diseases is unclear. The objective is to assess the causal relationship between arterial stiffness index (ASI) and age-related diseases by Mendelian randomization (MR) analysis. We obtained instrumental variables associated with age-related diseases from genome-wide association studies (GWAS) of 484,598 European individuals, and data for ASI were obtained from the UK Biobank GWAS of 127,127 participants. We used the inverse variance-weighted as the primary analysis method. In addition, several sensitivity analyses including MR-Egger, weighted-median (WM), Mendelian randomization pleiotropy residual sum and outlier, and Cochran’s Q test were performed to test the robustness of the results. Reverse MR analysis was also performed to assess reverse causal relationships between age-related diseases and ASI. We verified the causal relationship between eight age-related diseases and ASI, of which cardiovascular disease ( β = 0.19), gallbladder disease ( β = 0.85), liver, biliary, or pancreas problem ( β = 1.02), hypertension ( β = 0.19), joint disorder ( β = 0.53), and esophageal disorder ( β = 2.10) elevated ASI. In contrast, hyperthyroidism or thyrotoxicosis ( β = −2.17) and bowel problems ( β = −1.83) may reduce ASI. This MR analysis reveals causal relationships between ASI and several age-related diseases. ASI is expected to be a potential indicator of health conditions for older populations.

Background: To investigate the effect of goal-directed hemodynamic treatment on perfusion and short-term prognosis in patients undergoing early Tangential excision and skin grafting for extensive burns.Methods: Ninety-five patients with extensive burns undergoing early Tangential excision and skin grafting were randomly divided into a standard hemodynamic management group (control group) and a goal-directed therapy group (GDHT group), with the control group guided by conventional parameters and the GDHT group guided by stroke volume (SV) based on Vigileo. The primary outcomes were cardiac complications, pulmonary complications, neurological disease, acute kidney injury, and pain within 7 days postoperatively. Secondary outcomes included microcirculatory perfusion metrics: The central venous-arterial carbon dioxide partial pressure difference (Pcv-aCO2), and blood lactate (Lac). investigators assessing outcomes were blinded to group allocation.Results: When analysing 47 subjects in the GDHT group and 48 subjects in the control group, fewer patients in the GDHT group had postoperative pulmonary complications [pneumonia (2:9, P=0.027); oxygenation index <300 (3:8, P=0.041)] and controls were more likely to have atrial fibrillation (4:12, P=0.032) Renal and neurological complications did not differ between groups. Pcv-aCO2 and Lac were higher in the Con group after the intervention compared to the control group, and there was no difference between the two groups postoperatively. In this study, Pcv-aCO2 and Lac were Key influencing factors for pulmonary complications within 7 days postoperatively (Beta=0.197, P=0.000; Beta=0.147, P=0.000).Conclusion: SV-guided GDHT improves microcirculatory perfusion and has fewer short-term postoperative complications compared with standard hemodynamic therapy.Trial registration: NCT05221788 (03/02/2022)