"I feel like I'm drowning." Four days after a STEMI, a patient who had been recovering well is sitting bolt upright, coughing up pink, frothy sputum, and unable to catch his breath.
In this episode, Sarah walks you through a worst-case scenario complication every cardiac nurse needs on their radar: post-MI papillary muscle rupture causing acute, severe mitral regurgitation. This is one of those zebra diagnoses that you may never see... but if you do, recognizing it early is what gets your patient to the OR alive.
Sarah breaks down the pathophysiology behind the patient's sudden deterioration, the clues that will help you catch a mechanical complication, and how to treat the patient — including which medications help (or backfire), and where BiPAP and mechanical support fit in.
Topics discussed in this episode:
Case presentation: sudden respiratory distress 4 days post-STEMI
Mitral valve anatomy and the role of the papillary muscles
Why mechanical complications happen days after an MI
Acute vs. chronic mitral regurgitation
Why the lungs flood while the organs starve
Why murmurs can be misleading
BiPAP and the risks of intubating a patient in shock
Afterload reduction vs. norepinephrine
When Lasix helps and when it doesn't
Mechanical circulatory support: IABP, Impella, and VA-ECMO
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