The main risk factors for major complications and early mortality after the positioning of percutaneous endoscopic gastrostomy (PEG) reported in the literature are old age, multimorbidity, and the use of inappropriate methods for PEG positioning. A proper PEG positioning technique and adequate post-positioning patient management and surveillance are the main protective factors, but the information on protective factors in the literature is much poorer. The aim of this study was to provide more information on PEG-related complications and mortality in geriatric patients treated with long-term enteral nutrition administered by PEG according to a specific home enteral nutrition (HEN) protocol. This was a retrospective study based on data from 136 elderly patients in whom PEG was positioned from 2017 to 2023 at the geriatric hospital IRCCS INRCA, Ancona (Italy), 88 of whom were treated with HEN. Data on PEG-related complications, duration of HEN, hospitalizations, and mortality were analyzed. No complications were registered during or immediately after the PEG positioning. The prevalence of a major complication-buried bumper-was in the lower limit of the range reported in the literature (4.32%). The prevalence of minor complications such as peristomal leakage, inadvertent tube removal, and granulation tissue was higher than that reported in the literature (14.71%, 23.53%, 29.41%), while tube blockage and peristomal site infection were less frequent (8.82%, 38.23%). Three hospitalizations for PEG-related complications occurred. Both the all-cause 30-day mortality and within-two-months mortality were lower than those in the literature (1.92% and 3.84%). The impact of the risk factors recognized by the literature on complications and mortality could be probably mitigated by improving the PEG placement techniques and pre- and post-PEG placement patient management practices. Data on the prevalence of complications and mortality must be interpreted in correlation to this information.