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Altered diagnoses associated with shifting the body position from supine (left) to upright (right). The top panels illustrate a change in the IRP in the upright position that resulted in the diagnosis of an EGJ outflow obstruction. The bottom panels illustrate an instance in which the shift in the body position evoked a hypercontractile pattern in a patient with a small LES- crural diaphragm separation in the supine position.
