| PRBV | placental residual blood volume |
|---|---|
| PRI | Pain Rating Index; phosphate reabsorption index; phosphoribose isomerase; placental ribonuclease inh... |
| PTI | pancreatic trypsin inhibitor; persistent tolerant infection; Pictorial Test of Intelligence; placent... |
| ASD | Atrial Septal Defect Types of ASD 1. Ostium Primum ASD  ... |
| ECD | Endocardial Cushion Defect |