You're looking at a non-peer-reviewed study with some sloppy conventions. There is not enough information contained in the paper to answer your questions about it.
You can assume what you want for many of your questions, but they are better directed at the authors, who have not indicated when they present means or medians, standard deviations or IQR, etc.
Aadrenaline will generally quickly worsen heart failure because
it massively increases peripheral vascular resistance and thus after-load on the heart.
It significantly increases myocardial oxygen demand and in heart failure due to ischaemic heart disease this can quickly lead to myocardial infarction.
Do the effects of epinephrine not last long enough
diclofenac by itself has a weak COX-2 selectivity and inhibition of COX-2 can cause or exacerbate hypertension and increase the likelihood of thrombotic events
what is the most important information I should know about medicines called NSAIDs? new or worse high blood pressure; heart failure; liver problems including liver failure; kidney problems including ...