ABSTRACT
Which of the following investigations would be most useful in establishing the cause of her symptoms?
A. 24-hour lower oesophageal pH B. Barium swallow C. Erect chest X-ray D. Manometry E. Upper gastrointestinal endoscopy
Which of the following investigations would be most useful in establishing the cause of her symptoms?
A. 24-hour lower oesophageal pH B. Barium swallow C. Erect chest X-ray D. Manometry E. Upper gastrointestinal endoscopy