As you turned the corner on the second flight of stairs, you felt your breath pull a little deeper, the next one come a little earlier. Your heart said 👋🏼, bounding softly in your neck.
Ten seconds down the hall, all that faded. You were back to mulling some thought.
1/
But hold on. Let’s pause for a minute and retrace the steps.
A lot happened before the extra breath and the tug in your neck caught your attention.
And it’s all so damn cool.
2/
At the foot of the stairs, anticipation of exertion 🔔 and the stretch of muscle fibers 🦵🏽sent a signal to the sympathetic nervous system: start the car.
3/
I’ve always thought of severe hypertension as a cause of increased myocardial oxygen demand. Which makes sense for the SBP (afterload, wall stress)... it’s what the LV is contracting against.
2/
But what role does the DBP play?
Not much of one as far as the LV’s workload far as I can think...
But diastole is when coronary perfusion happens. Applying Ohm’s law in that vascular bed,
+1 for organization/structure as foundation of effective communication.
Learners often struggle with shifting expectations. And teachers sometimes associated highly structured presentations with wordy ones. So I want to emphasize:
What about this stool, which might be blood or food pigment? Or the self-evacuated black stool of a patient who’s on iron or pepto, and is tachy today?
I’d Guaiac that, and change management if overtly + vs -.