Start here: if a patient with community-acquired infection is still on piperacillin-tazobactam, ceftriaxone or a carbapenem, this gives a practical route to narrowing safely. The key is defining the syndrome first, then checking for coverage gaps such as Pseudomonas, MRSA, ESBL producers, or atypical pneumonia.

The trigger is fever, severe headache, a non-blanching rash, or reduced consciousness that no longer fits a simple viral illness. Start here for clear teaching on early ceftriaxone and dexamethasone, when not to wait for lumbar puncture, and when CT is actually justified.

Refractory ventricular fibrillation needs an escalation plan, not repeated identical shocks. Move the lateral pad high in the axilla, consider early anterior-posterior vector change or double sequential external defibrillation, and prioritise effective defibrillation before assuming more adrenaline or joules will solve the problem.

False certainty damages trust. When a patient arrives with online health claims, first identify the headline, influencer or product shaping the belief, then separate correlation from the totality of evidence and explain uncertainty plainly rather than pretending the science is settled.