Chronic kidney disease (CKD) affects a large part of the population and represents a global public health problem as it is-especially in advanced stages of CKD-associated with major medical, societal, and economic burdens. 1 Despite preventive and therapeutic measures, CKD is often a progressive illness that may lead to end-stage renal disease (ESRD), 2,3 necessitating initiation of renal replacement therapy (RRT) by kidney transplantation, hemodialysis (HD), or peritoneal dialysis (PD). Although the best option for RRT is kidney transplantation, due to its advantages in terms of quality of life and survival, many patients cannot undergo transplantation because of lack of donors, older age, various comorbidities, or specific contraindications, and for these patients, choosing the best dialysis modality, PD or HD, according to their individual need and ability is an important task. 4 While clinical outcomes and life quality with PD are at least as good as with in-center HD, the latter is the dominating dialysis modality in almost all countries. This may be due to absolute contraindications to PD (which are few) or because of patient's preferences; however, many potentially eligible patients may not be considered to be suitable for PD or not even offered the option of PD because of conditions including comorbidities-some of which are the focus of this review-that rightly or wrongly are thought to represent a risk for complications. In addition, financial issues, in particular reimbursement policy, 5-7 has a strong impact on the use of PD, but lies outside the scope of this review.Compared to in-center HD, most studies indicate that PD associates with equivalent or during the first years of dialysis even better survival, 8 several specific medical advantages such as better preservation of residual renal function, 9 and, being a home-based dialysis therapy, socioeconomic advantages such as increased patient autonomy and reduced cost of therapy. 10 Nevertheless, even though as many as 70%-80% of patients may be eligible for PD at the time of dialysis initiation, [11][12][13] and there are no guidelines