bringing venous hemodynamic testing to you. understanding venous physiology pneumatic venous...

Bringing venous hemodynamic testing to you.

Understanding venous physiology

Pneumatic Venous PlethysmographyPneumatic 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

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.

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)

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:

• 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

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

60 mmHg

(looking for limited outflow / obstruction)

Outflow- phase Outflow- phase oneone

Outflow- phase Outflow- phase oneone

baselinecuff volume

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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

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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

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Normal

Abnormal

Refill Rate < 5.0

Refill Rate > 5.0

(ml / 100ml / min)

DependeDependent nt

RefillingRefilling

DependeDependent nt

RefillingRefilling

Patient is quickly tipped upright…

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NormalNormal

AbnormalAbnormal

Exercise- Exercise- ankle ankle flexesflexes

Exercise- Exercise- ankle ankle flexesflexes

10 ankle flexes

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• 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

• 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

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

• Printable in color and black and white

Full Full TracinTracin

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Full Full TracinTracin

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Normal StudyNormal Study Abnormal StudyAbnormal Study

• 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

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