Hypotension

• A 65 y.o. previously healthy male, on ibuprofen for pain and low molecular weight heparin prophylaxis after an elective total hip replacement, collapsed in the ward on his way to the toilet three days postoperatively and is now sweaty, tachycardic and hypotensive. What are the immediate measures and what are the likely causes of the hypotension...
• A 55 y.o. female, who is a known to be treated with benzodiazepines and propranolol and is an alcohol abuser, is found collapsed in her apartment. On arrival of the ambulance/paramedics, she is in cardiac arrest, sinus rhythm is re-achieved with a single shock and she is brought to Accident and Emergency where attempts to retain her BP at 100 mmHg systolic with an adrenaline infusion are failing. What is initial management and what are possible causes for the increasing adrenaline requirement...