Left bundle branch area pacing (LBBAP) provides a physiological pacing alternative for patients with third-degree atrioventricular (AV) block requiring continuous ventricular pacing. In this elderly, pacemaker-dependent patient, LBBAP was performed using a rapid, electrogram-guided technique that enabled precise septal targeting with minimal fluoroscopy exposure. The appearance of fixation beats, confirmation of left bundle branch capture, and favorable electrical parameters indicated successful conduction system engagement. Long-term follow-up confirmed preserved ventricular function and absence of pacing-induced dyssynchrony, supporting the safety and efficacy of LBBAP in patients requiring continuous ventricular pacing. This case further demonstrates that age and frailty are not limiting factors for conduction system pacing.