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Background Ultrasound-guided temporary pacemaker implantation has been proven safe and efficient.However,few studies have focused on elder and critical patients.Methods Twelve elder and critical patients underwent temporary cardiac pacing through the jugular vein or subclavian vein,with bedside ultrasound images to assist the placement of electrode within the right ventricle.Results Ultrasound-guided temporary cardiac pacemaker insertion was successful in all of the 12 patients.Electrodes were sent into the right ventricle correctly with the help of ultrasound imaging.In all cases,temporary pacemaker functioned well without procedure-related complications.Conclusion Temporary cardiac pacing guided by ultrasound is safe and effective in elder and critical patients,which is worth of promoting,especially in intensive care unit.