苏大附一院完成全国首例零造影剂无导线起搏器植入，守护孕妇安全

Core Viewpoint - The successful implantation of the first zero-contrast, extremely low-dose radiation leadless pacemaker in a pregnant patient in China demonstrates advancements in medical technology that prioritize the health of both the mother and fetus [1][2]. Group 1: Medical Procedure - The patient, Ms. Li, was diagnosed with intermittent third-degree atrioventricular block, experiencing heart pauses of up to 5.2 seconds, necessitating pacemaker treatment to ensure safety for both her and the fetus [1]. - The procedure was conducted using a novel approach involving trans-thoracic ultrasound guidance, zero contrast, and extremely low radiation, which significantly reduced the risks associated with traditional methods [2]. Group 2: Technical Details - Traditional leadless pacemaker implantation typically requires an average X-ray fluoroscopy time of about 15 minutes and radiation exposure of 250 mGy, whereas this procedure achieved a fluoroscopy time of only 1.5 minutes and radiation exposure of just 4 mGy [2]. - The use of double-layer lead aprons during the procedure provided additional protection for the patient's abdomen, further ensuring the safety of the fetus [2]. Group 3: Implications for Future Procedures - This innovative technique offers valuable insights for special populations, including patients with contrast agent allergies, renal insufficiency, and children, expanding the applicability of leadless pacemaker implantation [2].