The following information may help to address your question:
Isolated levocardia is a type of situs inversus where the heart is located in the normal position, but there is a mirror-image reversal of other internal
The overall outlook for infants born with isolated levocardia will vary depending largely on the absence/presence of heart defects. You can find grim estimates for long term survival in dated literature (published in the 1960’s and 70’s). These statistics do not account for mild cases of isolated levocardia diagnosed as a result of improved technologies and detection.