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What is GERD is defined as pH of oesophagus< ____ and for > _______% of total day time. and explain in detail?
pH of esophagus< 4 for > 5% of total day time is defined as GERD There is Demeester score for the severity of GERD GERD can be due to * Hiatus Hernia * Incompetent LES (Coffee, tea, stress) GERD causes - Chemical laryngitis, chemical tracheitis - Nocturnal cough* -Asthma -Dental erosions