Early changes in oesophageal function in progressive systemic sclerosis: a comparison of manometry and radiology.

The characteristics of oesophageal dysfunction were studied with manometry and cine radiography in a recumbent position in 21 patients with typical progressive systemic sclerosis (PSS). Manometry was also performed in a matched control group. Only one patient had a completely normal manometry. Mean resting pressure in both the upper and lower oesophageal sphincters were significantly decreased in PSS. Twelve patients had no detectable peristalsis in the lower oesophagus. In the upper oesophagus, the mean pressure amplitude of the peristalitic wave was found to be lower than normal in all patients with detectable peristalsis. In some patients, the only feature of oesophageal dysfunction observed was an increased speed of the peristaltic wave in the middle and lower oesophagus. This is interpreted as an impaired coordination of the propulsive peristalsis. Neuromuscular dysfunction of the oesophagus in its full length was thus clearly demonstrated. At cine radiography, three patients were judged as normal, and 13 patients had severe impairment of the peristaltic function in the distal two-thirds of oesophagus. Oesophageal scoring based on manometry correlated well to scoring based on radiography. Cine radiography of the recumbent patient gives adequate information for clinical purposes. Detection of early changes in the amplitude and speed of the propagation wave requires manometry.