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Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

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Page 1: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

Bringing venous hemodynamic testing to you.

Understanding venous physiology

Pneumatic Venous PlethysmographyPneumatic Venous Plethysmography

Page 2: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

ObstructionObstruction IncompetenceIncompetence FunctionFunction

Bilateral venous physiological studyObstruction, Incompetence, Exercise

in less than 5-10 minutes

Bilateral venous physiological studyObstruction, Incompetence, Exercise

in less than 5-10 minutes

Page 3: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

VenView System VenView System AdvantagesAdvantages

VenView System VenView System AdvantagesAdvantages

• Comprehensive plethysmographic evaluation for venous obstruction, incompetence, and calf ejection fraction.

• Complete bilateral evaluation time < 20 minutes.– 5 minutes explanation and pre-test set-up,– 5-10 minutes for bilateral obstruction, incompetence, and calf ejection studies

collectively,– 5 minute post test removal and print report

• Once patient and cuffs are positioned- the testing is “Hands-Off”, simply follow computer prompts.

• Detailed hemodynamic values, tracings, and graphs are displayed on two page report.

• Examination chair can also be configured as bed.• Unobstructed access to the popliteal area.

Page 4: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

About VenViewAbout VenViewAbout VenViewAbout VenView

• VenView is a non-invasive pneumatic venous plethysmography device.• The VenView system provides accurate quantitative studies due to a flow meter that measures air placed inside

sensing cuff. • With a limb circumference measurement and automated measured sensing cuff volumes, the VenView system is able

to calculate volume/pressure relationships. • Volume measurements are reported as ml/100ml (individual leg volume correction)

Page 5: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

IndicationsIndicationsIndicationsIndications

• Venous disease such as venous thrombosis, venous incompetence (deep, superficial, perforator) and poor venous calf ejection fraction may present as varicose veins, edema, stasis, and ulceration of the lower extremities.

• Deep venous thrombosis: outflow study• Venous incompetence: dependent refill study• Venous calf ejection fraction: exercise refill study

VenView specifically addresses each parameter of venous disease:

Page 6: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

• Deep venous thrombosis: outflow study• Venous incompetence: dependent refill study• Venous calf ejection fraction: exercise refill study

VenView specifically addresses each parameter of venous disease:

OutflowOutflow Dependent RefillDependent Refill Exercise FunctionExercise Function

Page 7: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

Sensing cuffs

Sensing cuffs are inflated with air to 6 – 7 mmHg

The amount of air is measured as it inflates the cuff which

provides a pressure/volume relationship to base calculations

Method: Sensing cuff Method: Sensing cuff inflationinflation

Method: Sensing cuff Method: Sensing cuff inflationinflation

Page 8: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

60 mmHg

(looking for limited outflow / obstruction)

Outflow- phase Outflow- phase oneone

Outflow- phase Outflow- phase oneone

baselinecuff volume

next slide

Page 9: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

60 mmHg Release

MaxV V

ExV V

Expelled V VMax V V

> 77%

Normal Outflow

4 sec

Outflow- phase Outflow- phase twotwo

Outflow- phase Outflow- phase twotwo

next slide

Page 10: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

60 mmHg Release

MaxV V

ExV V

Expelled V VMax V V

< 77%

Abnormal Outflow

4 sec

Normal Outflow

> 77%

Outflow- phase Outflow- phase twotwo

Outflow- phase Outflow- phase twotwo

next slide

Page 11: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

Normal

Abnormal

Refill Rate < 5.0

Refill Rate > 5.0

(ml / 100ml / min)

DependeDependent nt

RefillingRefilling

DependeDependent nt

RefillingRefilling

Patient is quickly tipped upright…

next slide

Page 12: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

NormalNormal

AbnormalAbnormal

Exercise- Exercise- ankle ankle flexesflexes

Exercise- Exercise- ankle ankle flexesflexes

10 ankle flexes

next slide

Page 13: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

• Two page report

• Contains values, plethysmographic tracing, and summary graph for all three studies

– Outflow– Dependent venous filling– Exercise refilling

Summary Summary ReportReport

Summary Summary ReportReport

Page 14: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

• Individual detailed report page that contains values, plethysmography tracing, and summary graph for all three studies

– Outflow– Dependent venous filling– Exercise refilling

OutflowOutflow Dependent FillingDependent Filling ExerciseExercise

Individual Individual Detailed Detailed ReportsReports

Individual Individual Detailed Detailed ReportsReports

Page 15: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

• Entire study tracing that contains:– Outflow– dependent refill– Exercise refilling

• Printable in color and black and white

Full Full TracinTracin

gg

Full Full TracinTracin

gg

Normal StudyNormal Study Abnormal StudyAbnormal Study

Page 16: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

• Examination chair can also be configured as bed.

• Unobstructed access to the popliteal area for examination or duplex scanning.

Additional Chair Additional Chair FeaturesFeatures

Additional Chair Additional Chair FeaturesFeatures

Page 17: Bringing venous hemodynamic testing to you. Understanding venous physiology Pneumatic Venous Plethysmography

ObstructionObstruction IncompetenceIncompetence FunctionFunction

Bilateral venous physiological studyObstruction, Incompetence, Exercise

in less than 5-10 minutes

Bilateral venous physiological studyObstruction, Incompetence, Exercise

in less than 5-10 minutes

Your venous hemodynamic studies