Post-dated pregnancy means the pregnancy has gone beyond the expected due date. Clinically:

NPOL is not a universally standard obstetric abbreviation. In many hospital case sheets, it commonly means “non-progress of labour” or “no progress of labour”. That means the cervix and/or baby’s descent was not progressing as expected during labour. It may lead the team to monitor labour closely, augment it, or consider Caesarean delivery depending on the full clinical situation.

So, “post-dated pregnancy with NPOL” most likely means:

Because abbreviations vary between hospitals, confirm the exact expansion with the treating obstetrician or the hospital record department.

In an O.T. (operation theatre) procedure record, SA usually means Spinal Anaesthesia.

It means an anaesthetic injection was given in the lower back into the spinal fluid area, numbing the lower half of the body. The patient is usually awake, though mild sedation may also be given. It is commonly used for Caesarean section and other lower-abdominal or lower-limb operations. Cleveland Clinic explanation

Less commonly, SA can mean subarachnoid anaesthesia, which is essentially the same technique.