Table 2.

Cumulative effectiveness of surgical myotomy for achalasia

No.	Type of surgery	Improvement excellent/good	Mean follow-up (yr)	Complication acid reflux	Ref.
52	LHM-Dor operation	92%	4.3	11%	[51]
53	LHM-Dor operation	92%	3.0	9%	[61]
75	LHM-partial fundoplication	84%	5.6	15%	[48]
71	LHM-Dor	85%	6.0	12.70%	[52]
248	LHM+/-Dor	88%	3.4	3%	[55]
211	LHM-Dor	89%	5.3	34%	[56]
161	LHM-Dor	97.20%	4.6	15.70%	[47]
200	LHM-Dor	85%	3.5	28%	[57]
46	LHM-Toupet or Dor	80%	6.4	9%	[46]
505	LHM+/- fundoplication	95%	2.6	16%	[51]
155	LHM-Dor	77%	5.0	27%	[54]
137	LHM-Dor	94.80%	5.4	10.90%	[59]
1860	-	77%-97.2%	2.6-10.9	3%-34%	Total

LHM: Laparoscopic Heller myotomy.