| TTE | transthoracic echocardiography |
|---|---|
| TTNA | transthoracic needle aspiration |
| TTNB | transthoracic needle biopsy |
| TTR | transthoracic resistance; transthyretin; triceps tendon reflex |
| AP | accessory pathway; accounts payable; acid phosphatase; acinar parenchyma; action potential; active p... |
| AP | Atrial pacing |
|---|---|
| TAP | Transesophageal atrial pacing |
| PCL | pacing cycle length |
| VP | ventricular pacing |