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Table 2 Temporal characteristics of acid clearance versus impedance detected bolus clearance

From: Discounting the duration of bolus exposure in impedance testing underestimates acid reflux

 

Parameters

Median

Range (Min, Max)

Esophageal acid exposure

Mean Acid Clearance time - total (sec)

66

(7,1257)

Mean Acid Clearance time - upright (sec)

48

(0,179)

Mean Acid Clearance time - recumbent (sec)

44

(0,1257)

Impedance

Median Bolus Clearance Time-total/sec

12

(3,31)

Median Bolus Clearance Time-upright/sec

12

(5,37)

Median Bolus Clearance Time- recumbent/sec

10

(0,96)