This leads to obstruction of food going into the stomach with regurgitation, regurgitation and
aspiration pneumonia. There is no cure for this disease, but pneumatic dilation of the sphincter, commonly called a valve, or surgical myotomy, which is partial cutting of the valve, offer long-lasting benefit and are considered optimal treatment.
If this abnormality is uncorrected, your father will continue to get aspiration pneumonia and eventually die of it.