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The above results indicate that because potassium - losing diuretic therapy can increase myocardial electrical excitability in patients with ischaemic heart disease , even minor falls in plasma potassium concentrations are probably best avoided in such patients .
 Chemical: potassium; Disease: ischaemic heart disease; Chemical: potassium
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: ischaemic heart disease; Chemical: potassium