| IHSS | idiopathic hypertrophic subaortic stenosis |
|---|---|
| IPS | idiopathic pain syndrome; idiopathic postprandial syndrome; inches per second; infundibular pulmonar... |
| LAX-DSS | long axis-discrete subaortic stenosis |
| LEOPARD | lentigines, EKG abnormalities, ocular hypertelorism, pulmonary stenosis, abnormalities of genitalia,... |
| LRS | lactated Ringer solution; lateral recess stenosis; lateral recess syndrome; low rate of stimulation;... |