| PDE-5 | Phosphodiesterase-5 |
| PDE-5-I | Phosphodiesterase-5 inhibitor |
| NO | Nitric oxide |
| cGMP | Cyclic guanosine monophosphate |
| ISMN | Isosorbid monohydrate |
| ISDN | Isosorbid dinitrate |
| MAP | Mean arterial pressure |
| PVP | Portal venous pressure |
| PH | Portal hypertension |
| ACE inhibitors | Angiotensin-converting enzyme inhibitors |
| AT-1 receptors | Angiotensin-1 receptors |
| HVPG | Hepato-venous pressure gradient |
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