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Demographic and Clinical of the Study Population
| Age (yrs) | 73.14 (65 to 89) |
| Sex (F/M) | 29/22 |
| Duration of Symptoms (yrs) | 10 (5 to 50) |
| Preoperative LESP, mm Hg | 32 (7 to 28) |
| Prior Therapy (Y/N) | 28/23 |
| Pneumatic dilation | 8 (29%) |
| Botox® Injection | 7 (25%) |
| Both | 13 (46%) |
| Previous myotomy | 2 (7%) |
| Time Between Procedures | 12 (18 to 36) |
