What's the plural form of hyperpotassemia? Here's the word you're looking for.
Answer
The noun hyperpotassemia can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be hyperpotassemia.
However, in more specific contexts, the plural form can also be hyperpotassemias e.g. in reference to various types of hyperpotassemias
or a collection of hyperpotassemias.