Hemodynamics 1: Essential hemodynamics, pitfalls, anomalies- Elias Hanna, Univ Iowa

-Differences between atrial, ventricular, arterial tracings
-Differences between PCWP and LA
-Large V wave cases and differential diagnosis
-Cases of discrepancy between LVEDP and PCWP
-Compensated vs decompensated HF hemodynamics
-Starling curve and superimposition with pressure-volume relationship
05:28 From 05:28 to 05:40, I am referring to the pulmonary systolic and pulmonary diastolic pressures, not aortic pressures. I misspoke.

[@alvaroceballos7081]

Absolutely wonderful lecture. Perfect accompaniment after reading the book. Thank you so much!

[@aaue4212]

didactically excellent videos also the books, I also read the recommended papers . The best learning platform in cardiology in my opinion. I’m a real big fan.❤

[@Muhammedhajji]

Which book are you referring to?

[@munirabdullatif2022]

Excellent.. Thank you Hanna

[@Enron3000]

Excellent stuff!

[@karimmohamedkamal2493]

Thanks for that informative lecture

[@aroojzahid3138]

Very nice presentation

[@drpnab]

excellen. Thank you

[@Nikesnipe]

thanks greatly

[@moustafakamalsaad2293]

thanks a lot

[@user-lr3hg5pe4u]

Perfect

[@rahuln1825]

Hemodynamics masterclass sir.... excellent info..tx

[@TvAanimalia]

Thank You sir...it was too difficult But will try to watch it twice or maybe thrice to understand it properly

[@soi2238]

Dr. Hanna is it possible the aortic pressure to be advanced than LV pressure during ejection phase of normal cardiac cycle? Tnx beforehand!!!

[@adityadewantohendrani9648]

Dr.Hanna, do we use the end-expiratory LVEDP as the best estimates of LV filling pressure measurements like in wedge pressure tracing? Or just use the computer-generated LVEDP which is the average EDP throughout respiratory cycle? Thank you in advance sir

[@eliashanna8248]

For all pressures, including LVEDP, the most accurate measurement is obtained when the respiratory pressure is 0 mmHg: this avoids a direct effect of the respiratory pressure on the catheter tip. Unless the patient actively exhales, corresponds to end‐expiration (highest pressure points in spontaneous breathing).
But in patients breathing deeply (e.g., sedated morbidly obese), expiratory pressure is positive; the negative inspiratory and positive expiratory pressures cancel each other out and averaging vascular pressures over several respiratory cycles is preferred. This also applies to when you measure exercise hemodynamics. The average will be closer to expiration (longer) than inspiration (~2/3 of exp +1/3 of insp).

[@ahmadboard6227]

Amazing as usual thank you sir. In 5:30 I think you mean pulmonary NOT aortic?

[@eliashanna8248]

Yes, you are correct. I misspoke. Thank you for pointing it out.

[@iftikharahmed9707]

At 5:30 min you said Mean PCWP is equal to Aortic Diastolic pressure. Is it true??

[@eliashanna8248]

No, I misspoke, as I indicated in one of the comments below. From 05:28 to 05:40, I am referring to the pulmonary systolic and pulmonary diastolic pressures, not aortic pressures. The picture I am referring to indicates that I am referring to the PA not aorta. But I will also add a time stamp pointing to that. Thank you! That was the first video I ever uploaded, I did not use to do any editing. But now I edit my videos more carefully.