Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic...

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Venous system Tom Horváth M.D. Ph.D.

Transcript of Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic...

Page 1: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Venoussystem

TomHorváthM.D.Ph.D.

Page 2: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Topics

1. Structuralaspects2. Hemodynamicfunctions3. Pressure-diameterbehavior4. Centralvenouspressure&vascularfunction

Page 3: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Thecirculatorysystem

pulmonaryveins

systemicveins

Page 4: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Pressuredistribution

Page 5: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Distribution of total blood volume

veins64

arteries13

pulmonarycirculation

9

capillaries7

heart7

Totalbloodvolume~5.5Liter

Venousbloodvolume~3.52Liter

Page 6: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Hemodynamicfunctionsoftheveins

• Conduitfunction– channelbloodtowardtheheart

• Flowrectification(anti-gravitationalfunctions)– venousvalves– musclepump– abdominalpump

• Capacityfunction– bloodstorage(60-70%)

• spleen~150ml• liver~200-300ml• abdominallargeveins~300ml

Page 7: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Structuralaspects– arteriesvs.veins

Page 8: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Structuralaspects– arteriesvs.veinsII.

Page 9: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Arteriesandveinsunderpressure

COMPLIANCE:DV/DP

DISTENSIBILITY:DV/(DP× V0)

Page 10: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Flowrectification– valves– I.

Page 11: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Flowrectification– musclepump– II.

Page 12: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Flowrectification– thoraco-abdominalpump– III.

INSPIRATIONbloodflowsrapidlytowardthechest

EXPIRATIONbloodflowsslowstowardthechest

Page 13: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Centralvenouspressure

• Visafronte(fromthefront~RA)

• Visatergo(fromtheback~LV)

Page 14: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

ThevascularfunctioncurveI.

Page 15: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

Conceptof“deadpressure”a.k.a.meancirculatorypressure

• Q=5l/min• Pa =102mmHg• Pv =2mmHg• Ph =Pa - Pv =100mmHg• TPR=Ph/Q=20mmHgmin/l• C=DV/DP• Ca/Cv =1/19

Page 16: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

ThevascularfunctioncurveII.

Page 17: Venous systemVenous system Tom Horváth M.D. Ph.D. Topics 1.Structural aspects 2.Hemodynamic functions 3.Pressure-diameter behavior 4.Central venous pressure & vascular function The

ThevascularfunctioncurveIII.


Central Venous Pressure Insertion

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central venous pressure: of exercise training-induced ...

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Central Venous Pressure CVP

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Central Venous Access - Critical Care Medicine Venous Pressure Monitoring Once a central venous line is placed, it can be used to measure the patient’s central venous pressure. This

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Central Venous Pressure - IvyLeagueNurse.com Venous Pressure(CVP) Right Atrial Pressure (RAP) Monitoring 2 PREMIER EDUCATION PROVIDER Central Venous Pressure # 1021 Release Date: 8/28/2012

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Jugular venous pressure

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Central venous pressure monitoring Sheldon Magder

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CENTRAL VENOUS CATHETERS · Jugular venous pressure: observation of the jugular vein in the neck gives a crude indication of venous pressure. A raised jugular venous pressure may

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Hemodaynamic monitoring wedge pressure and central venous pressure · 2017-10-27 · Hemodynamic Monitoring: Wedge pressure and Central venous pressure do,J":''''

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19 The Jugular Venous Pressure And Pulse Contour

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MANAGEMENT OF ACUTE VARICEAL BLEEDING - moh.gov.my · (HVPG), defined as the difference between the wedged/occluded hepatic venous pressure and the free hepatic venous pressure, is

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Methods: Central Venous Pressure and Physician administration of Intravenous Fluids using the Venous 1000

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Masked Hypotension due to Elevated Venous Pressure in a …downloads.hindawi.com/journals/cric/2020/7148708.pdf · Case Report Masked Hypotension due to Elevated Venous Pressure in

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[Int. med] jugular venous pressure from SIMS Lahore

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