https://www.selleckchem.com/Proteasome.html 3 ± 28.7 μVs vs 67.6 ± 26.2 μVs, < .001). Among those with nonstrict LBBB, mean QRSd was similar but QRSA was significantly greater among women than men (96.0 ± 25.0 μVs vs 63.6± 26.2 μVs, < .001). QRSA was similar among men and women with strict LBBB ( = .533). Female *** was associated with better long-term outcomes in an unadjusted model (hazard ratio 0.623, confidence interval 0.454-0.857, = .004) but *** no longer predicted outcomes after accounting for differences in QRSA. Our study suggests that ***-specific differences in LV dyssynchrony contribute to greater CRT benefit among women. Standard QRSd and morphology assessments seem to underestimate the extent of LV electrical dyssynchrony among women with LBBB. Our study suggests that ***-specific differences in LV dyssynchrony contribute to greater CRT benefit among women. Standard QRSd and morphology assessments seem to underestimate the extent of LV electrical dyssynchrony among women with LBBB. An estimated 1 million patients require cardiac implantable electronic devices (CIEDs) but go without annually. This disparity exists in low-to-middle-income nations largely owing to the cost of CIED hardware. of CIEDs has been shown to be safe and feasible. However, recent publications have raised concern that promotion of CIED reuse may foster a CIED "black market," to the dismay of manufacturers, regulators, and clinicians alike. To determine if unregulated CIED sales for potential human use is a real issue by investigating unregulated public online CIED sale listings in the United States of America. An observational study was undertaken over 6 months using multiple internet search engines from May 1 to November 1, 2019. We cataloged (still in packaging, manufactured <7 years) and pricing. Manufacturers were contacted to determine status of sellers and using model/serial numbers. In total, 58 CIEDs-47 implantable cardioverter-defibrillators and 11 permanent pacemakers-fr