 [ Symptoms ] if an appendix ruptures how long would it take for sepsis to occur due to peritonitis [ Disease ] hi within first few hours peritonitis occur if drainage is applied early patient can be saved with good course of antibiotics kidney failure and sepsis depends on type of infection and put formation can not give u an accurate estimation but we are taking mainly days if no help received and weeks to month if care is given may not happen with good care and a non resistant infection good luck