2882
To investigate the initial potassium loss and development of hypokalaemia during the administration of an oral diuretic , metabolic balance studies were performed in ten patients with essential hypertension who had shown hypokalaemia under prior oral diuretic treatment .
 Chemical: potassium; Disease: hypokalaemia; Disease: hypertension; Disease: hypokalaemia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: potassium; Disease: hypokalaemia; Disease: hypertension; Disease: hypokalaemia