If you would like to support us please do via our Patreon account. 
https://www.patreon.com/anaesthesia
And best thing is that all proceeds will go to a reputable charity!

In this episode we cover categorisation of core cardiovascular topics
Here is a brief summary:

Hypotension

Preload
Rate 
Rhythm
Contractility
Afterload

Or Shock
Hypovolaemia
Cardiogenic
Distributive
Obstructive

O2 supply demand  
Supply
= o2 flux or delivery to heart
CBF x o2 content (Hb, sats, PO2)

CVR and CPP
CVResistance = metabolic, myogenic, neural, physical compression, viscosity, pathology
CPP = Cor Pressure – RAP or LVP.

O2 extraction.
High basal extraction of 55-65%
other tissues only 25%
so O2 demand is met by increasing CBF

Demand
Depends on Metabolic rate and myocardial work
Wall tension – PL and AL
Contractility
HR
Rhythms

Wall thickness
Basal rate
Type of work (pressure > volume work)
Electrical activation

When this is unbalanced = ischaemia

Determinants of coronary vasc resistance

Resistance = pressure difference / flow = corPP/ CBF

= 8nl/Pi R4. (n = eta)

Radius
Neural
Physical – compression, HR,
Pathology
Autoregulation
            Metabolic
            Myogenic
Viscosity

Coronary blood flow

= CPP/CVR

Neural
Physical
-       Compression
HR
Viscosity
Autoreg
-       Metabolic
-       Myogenic: A myogenic response refers to the intrinsic tendency of vascular smooth muscle to contract in response to increased distending pressure and to relax in response to decreased distending pressure.

Please rate, post a review and subscribe!

Check out www.anaesthesiacollective.com and 
sign up to the ABCs of Anaesthesia facebook group https://www.facebook.com/groups/2082807131964430

and check you the ABCs of Anaesthesia YouTube channel for more content
https://www.youtube.com/c/ABCsofAnaesthesia

Any questions please email Lahiruandstan@gmail.com 

Disclaimer:

 The information contained in this podcast is for medical practitioner education only. It is not and will not be relevant for the general public.

This contains general information about medical conditions and treatments. The information is not advice and should not be treated as such. 

The medical information is provided “as is” without any representations or warranties, express or implied. 

The presenter makes no representations or warranties in relation to the medical information on this video. 

You must not rely on the information as an alternative to assessing and managing your patient with your treating team and consultant.

You should seek your own advice from your medical practitioner in relation to any of the topics discussed in this episode’

 Medical information can change rapidly, and the author/s make all reasonable attempts to provide accurate information at the time of filming. There is no guarantee that the information will be accurate at the time of viewing

 The information provided is within the scope of a specialist anaesthetist (FANZCA) working in Australia.

 The information presented here does not represent the views of any hospital or ANZCA.

 These podcasts are solely for training and education of medical practitioners, and are not an advertisement. They were not sponsored and offer no discounts, gifts or other inducements. 

This disclaimer was created based on a Contractology template available at http://www.contractology.com.