Uh, epi in decompensated heart failure? Where is this happening? Why would you even consider something that will increase afterload in a patient with a faulty pump?.
I suggested it because most US EMS agencies I am aware of do not carry digoxin to increase contractility. They do carry epi.
The studies on dig not improving mortality are based on long term usage. But there is disputably some short term benefit.
The idea of using epi in desperation would be to mimic that effect with stronger contractile force. (No I don't think it would work very well, if at all, which is why I suggested it would be desperation)
The primary treatment is to lower peripheral resistance. However, if your high dose diuretic, CPAP, and all the other treatments originally listed are not working, I still don't think the tube is going to be the solution.
More therapies could be tried in hospital depending on the patient's cardiac function, in order to further reduce peripheral resistance, but in a patient in such extremis as described, I stand by my statement, the tube will most likely not make anymore difference.
If you're looking to specifically increase CO/CI you would begin looking at dobutamine or even primacor, as they both have a gentle vasodilative effect along with its inotropic profile that can increase CI. Also remember that in very diseased hearts, it is not uncommon to see some beta down regulation so using something that is cAMP mediated ( like a PDEI) may be more efficacious in some instances..
If you have them. I have only ever heard of critical care units with dobutamine available.
I have not encountered a prehospital or interfacility service with milrinone.
I have seen many interesting treatments for CHF, including CVVHFT, but I have never heard of that being available on an ambulance.
And yes, this patient would need intubation and mechanical ventilation to promote effective oxygenation, inotropic support, and diuresis.
55 y/o F with acute CHF exasperation, rales in all four quadrants, unresponsive to CPAP and Lasix, SaO2 in the low 70s, semiconscious, crappy perfusion, 30 minutes from ER, no flight available. What are you going to do?
Think about this for a bit and get back to me. Do you really think intubation is going to be the magic bullet that makes everything all right after all else has failed?
But please consider, if this is a 55 y/o female, in such extremis, then she is definately in a world of hurt. Either she had a recent untreated MI, or she has some chronic pathology that is not going to be easily correctable with the finest of facilities, much less on a 911 ambulance.
and lungs typically have 5 lobes, not four quadrants.
Pointless to this discussion. 4 lung fields have been adequete for auscultation in many environments for many years. I think without a lateral xray, ct, or ultrasound, it would be very difficult to narrow physical findings down to the particular lobe of the right lung.