Kalinka Hristova Mar 18, 2016:

No problem :) In such cases just ask the moderators to edit the question.

David Connor (asker) Mar 18, 2016:

That is the correct Cyrillic, Kalinka. It's just that I don't know how to switch to a Cyrillic keyboard as I never work in that direction.

Kalinka Hristova Mar 18, 2016:

Just to make sure I don't make a mess... ...before I edit the question: the abbreviation should read ХБН, right?

David Connor (asker) Mar 18, 2016:

thanks! It is now clearly chronic pulmonary or renal insufficiency. The patient does have COPD, but could also have kidney problems. I'll just make a note that the Bulgarian words for kidney and lungs start with the same letter, so we can't be sure. Or I'll just wait till I get further into this, so it may become obvious. Feel free to answer the question and provide a translation and I'll select you in due course.

Petar Tsanev Mar 18, 2016:

More context? There are at least two possibilities. Тhe Н stands for недостатъчност (insufficiency/failure). Most likely, the Б is either белодробна (pulmonary) or бъбречна (renal).