| HAPVD | hemi-anomalous pulmonary venous drainage |
|---|---|
| HAPVR | hemi-anomalous pulmonary venous return |
| HPA | Health Care Practice Act; Health Policy Agenda for the American People; health promotion advocates; ... |
| HPO | high-presure oxygen; hydroperoxide; hydrophilic ointment; hypertrophic pulmonary osteoarthropathy |
| HPOA | hypertrophic pulmonary osteoarthropathy |