Table 1.

Analysis of the LES in patients operated with dysphagia and in controls

Groups	Lenght(cm)	MEP(mmHg)	RP(mmHg)	MRP (mmHg)
Control (19)	3.5 to 5	10 to 26	4 to 9	14 to 34
Patients with dysphagia (41)	3.5 to 6.5	10 to 38	5 to 31	14 to 37

MEP=maximal expiratory pressure; MRP=mean respiratory pressure; RP=residual pressure