Aching legs, ugly veins, wounds and more...2019/08/01 · Chronic venous hypertension and reflux...
Transcript of Aching legs, ugly veins, wounds and more...2019/08/01 · Chronic venous hypertension and reflux...
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Venous Disease: Aching legs, ugly veins, wounds
and more
Robert Cutchen, MD, RVT, RPVI
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IMPORTANCE OF VENOUS DISEASE
Up to 25% of American women and 15% of American men suffer from venous disease
Highly symptomatic
Discomfort and wounds affect quality of life
1-2% prevalence of leg ulceration (open or healed)
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THE SPECTRUM OF VENOUS
DISEASE
lipodermatosclerosis
telangiectasias
varicose veins
Superficial phlebitis
venous ulceration and more….
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Anatomy & Physiology
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The Circulatory System
The Heart is the main pump to get oxygenated blood to tissues via the arteries
The Calf muscle is the main pump to get venous blood back to the heart from the legs
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Venous vs. Arterial
INTERNAL STRUCTURE
Adventitia Layer
Media Layer
Intima Layer
Vein Artery
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The Significance of Veins
Veins
60-70%
Arteries
10-12%
10
20
30
40
50
60
70
80
90
100
0
The venous system contains
most of the blood as it moves
through the circulatory system.
Most of
the blood
The rest of the blood
Lungs
10-12%
Heart
8-11%
Capillaries
4-5%
Source: Hole’s Human Anatomy and Physiology, 7th Edition, 1996
40% in the legs!!!
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Three Systems of Veins
Deep
Superficial
Perforator/communicating
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Deep Venous System
Deep system handles up to 90% of the venous blood volume.
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Veins of the Superficial System – 10%
The Superficial Venous System-
Small Saphenous Vein
The Superficial Venous System-
Great Saphenous
Vein & Tributaries
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Communicating / Perforator Veins
Perforator
Communicating Connecting “like” veins
Deep to deep
or
Superficial to Superficial
Connecting Deep to
Superficial
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Components of Normal Venous
Hemodynamics
Musculovenous Pump
Vein Walls Vein Valves
Dysfunction of any component may lead to abnormal flow
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Normal Valve Function
VEIN ANATOMY
Valve Open
Blood flows toward heart
Valve Closed
Prevents blood from reverse flow
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Abnormal Valve Function Venous
Dilation
When valves don’t close….
They are INCOMPETENT…. and reverse blood flow causes back pressure,“pooling”
and weakening of the vein wall.
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Valve Dysfunction vs. Wall Dilation
Valves can fail leading to increasing distal pressure (descending pattern)
Walls can dilate leading to valve failure (ascending pattern)
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Musculovenous Pump
Foot veins are emptied by weight bearing.
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Musculovenous Pump -- Foot
Foot veins are emptied by weight bearing, not by muscular contraction
Weight bearing on a paralyzed limb results in a strong Doppler signal in the femoral vein
Prolonged non-weight bearing deprives the venous system of this component.
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Musculovenous Pump -- Thigh
Makes up only 15% of volume ejected with each muscular contraction
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Musculovenous Pump -- Calf
The true workhorse of venous return – 60% ejected with each contraction.
– Contraction
• Pressure on vein forces valves open, antegrade flow
– Relaxation
• Pressure subsides, gravity pulls,valves close
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Gait Disorders Calf Muscle Pump
Dysfunction Swelling
Limping
Walker (Balance)
Obesity
Injury/Weakness (Stroke)
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Other Sources of Venous Return
Arterial Pressure (venous inflow)
Abdominal/ Intrathoracic Pressure (breathing)
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Venous Pressure at the Ankle
in Normal Legs
Recumbent 10 mmHg
Standing 90 mmHg
Walking 25-35 mmHg
The effect of the calf and ankle pumps takes place after
only 7 steps!
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Venous Pressure at the Ankle Normal vs. Defective
Difference 35-45 mmHg
Ambulatory Venous Hypertension
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Venous Reflux
Vein wall dilation and valve failure lead to reflux
Gravity is tough to beat
BLOOD FLOWS THE WRONG WAY
Chronic venous hypertension results
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Venous Obstruction
Results from DVT, intrinsic compression (May-Thurner Syndrome), extrinsic compression (obesity)
Valves damaged by thrombus as a result
Chronic venous hypertension and reflux often result
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So, lower extremity venous return is
adversely affected by:
Reflux (=incompetence, =insufficiency)
Obstruction (clots, compression, obesity)
Musculovenous pump inefficiency
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Epidemiology: Who
develops venous
disease?
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Venous Disease is a Hereditary
Disorder
134 families were examined:
The risk of developing varicose veins was:
89% if both parents had varicose veins
47% if one parent had varicose veins
20% if neither parent had varicose veins
Cornu-Thenard, A, J Dermatol Surg Oncol 1994 May; 20(5):318-26.
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Heredity in Chronic Venous
Insufficiency
Increased collagen found in varicose veins
Decreased elastin, hexosamine
Greater intersegmental variation in water and hexosamine content
Penetration of gene, gene(s) involved and method of transmission still unclear
Sansilvestri-Morel P et al Angiology 2003 54(1):13-18
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Inactivity aggravates venous disease
2854 patients with varicose veins, working in a factory
64.5% had jobs standing in one place
29.2% had jobs requiring prolonged periods of sitting
6.3% had jobs allowing frequent walking during their shift
Santler, R Hautarzt 1956; 10:460
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Varicose Veins are more
common in women than men
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Each pregnancy worsens the
condition
405 women with varicose veins
13% had one pregnancy
30% had two pregnancies
57% had three pregnancies Mullane DJ Am J OB Gyn 1952; 63:620
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Venous Disorders
Venous Insufficiency
Venous Obstruction
Venous Malformation
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Venous Insufficiency (Venous Reflux)
Venous flow toward feet instead of toward heart
Implies broken venous valves
Can occur in the superficial and deep system
Creates venous hypertension
Causes symptoms of heaviness, aching, tiredness, burning, throbbing, itching, swelling, skin damage
Pooling can cause increased risk for SVT
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Superficial vs Deep Venous Insufficiency
Superficial = varicose veins. Genetics, pregnancy, job, age, injury contribute ─ Can be treated by eliminating abnormal veins
Deep: often associated with prior DVT and damaged venous valves
─ No great solutions other than compression
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Chronic Venous Insufficiency (CVI)
Describes severity, not duration of symptoms
Denotes damage to skin
Progresses, if not treated
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Venous Obstruction
Thrombosis
─ Superficial or Deep
Compression ─ Non-thrombotic iliac vein lesion (May-Thurner Syndrome)
─ RCIA compresses LCIV
Post-thrombotic obstruction (scarring)
Biggest symptoms: pain and swelling. Chronic issues lead to skin changes.
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Venous Thromboembolism
Superficial
─ Low risk of embolization
─ Higher risk for extension of thrombus
─ Common in large bulging varicose veins (pooling)
─ Treatments include:
─ Anticoagulation (depending on thrombus burden)
─ Compression (once initial inflammatory response decreases
─ Heat
─ Daily ambulation
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Venous Thromboembolism
Deep
─ Higher risk for embolization than with superficial
─ Thrombus extension can have more significant consequences
─ Incomplete resolution of thrombus can lead to chronic leg pain and swelling
─ Post-thrombotic syndrome (damage to venous valves with resultant deep vein reflux) may occur in as many as 40% of cases
─ Treatments include:
─ Anticoagulation
─ Compression (once initial inflammatory response decreases
─ Daily ambulation
─ Thrombophilia testing should NOT be routine
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How do we visually classify venous
disease?
CEAP Classification
─ Clinical Signs (C1-C6)
─ Etiology (Primary, Secondary, Congenital)
─ Anatomy (Superficial, Deep, Perforating Veins)
─ Pathophysiology (Reflux, Obstruction, Both)
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C-1 Spider Veins
Telangiectasias and Reticular Veins
C-2 Varicosities
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C-3 Edema or
Corona
Phlebectatica
Corona Phlebectatica
C-4 Skin Changes
Hyperpigmentation Atrophie Blanche
Dermatitis, Cellulitis
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C-5 Healed Ulcer
C-6 Active Venous
Stasis Ulcer
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Cosmetic or Medical?
Spider veins are always considered cosmetic, even if they cause discomfort
Varicose veins that cause symptoms are a MEDICAL problem. Their treatment is almost without exception
covered by insurance, including Medicare, although insurance companies often make things difficult. ─ 6-12 weeks of compression stocking use (some)
─ BMI requirements (<35)
─ Some veins may be excluded
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Evaluation of the Patient With Venous
Disease
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History
History of problem: onset, exacerbating/alleviating factors, pregnancies, prior DVT, immobilization, job
Associated symptoms and relationship to standing, menses, exercise and compression
Current medications
Family history
Previous treatment and result
Goals of patient
Night-time symptoms are typically NOT venous
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Physical Examination
Examine patient in the standing position, from the groin to the ankle
Inspect and palpate for varicose and telangiectatic veins
Examine the skin for color/texture changes indicative of chronic venous insufficiency
Inspect the abdomen for enlarged superficial veins if ilio-femoral thrombosis is suspected
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Duplex Ultrasound
Gold standard for the initial evaluation of venous disease
MUST be performed in the standing position when evaluating for reflux.
Surprisingly, the average vascular tech is NOT adequately trained in how to do this, even with years of experience.
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Venous Mapping
•Provides for accurate treatment planning
•Allows for follow-up
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Varicose Veins
Varicose veins = venous insufficiency = venous reflux
Risk factors include genetics, females, pregnancy, jobs with prolonged standing, age, trauma
Great saphenous vein and its branches are most commonly affected.
Should be treated if symptomatic or if skin damage is occurring.
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Varicose Veins
Typical symptoms are aching, heaviness, burning, throbbing, tiredness, itching, and swelling are worse with prolonged standing or sitting, heat, high progesterone states such as pregnancy/pre-menses
Symptoms are improved with leg elevation, graduated compression (if tolerated), and often with walking
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Prevalence of Varicose Veins
Varicose veins are one of the most common chronic condition in North America
40 million Americans have varicose veins1
─ 15% men; 25% women
4.6 million workdays are missed in the U.S. due to Chronic Venous Insufficiency
1Society for Vascular Surgery 2 Ballard and Bergen: Chronic Venous Insufficiency – Diagnosis and Treatment
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Secondary Varicose Veins
VARICOSE DILATION OF SUPERFICIAL VEINS
DEEP VEINS OCCLUDED BY THROMBI
DESTRUCTION OF VENOUS VALVE
BLOOD POOLING IN DEEP VEINS
HIGH PRESSURE IN DEEP SYSTEM
PRESSURE TRANSMITTED TO SUPERFICIAL SYSTEM
THROUGH PERFORATORS
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Procedures for Varicose Veins
No more vein stripping!
Endovenous Thermal Ablation ─ Great Saphenous
─ Small Saphenous
─ Ant. Access. Great Saph.
─ Perforators
Mechanicochemical Ablation
Ambulatory phlebectomy
Endovenous Chemical Ablation
Before After
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Endovenous Thermal Ablation
Outpatient procedure
Local tumescent anesthesia
Continuous pullback
Closure of >93% GSV at 2 yrs
Immediate return to activity
Compression stockings for 1-3 weeks
Photo courtesy of Diomed, Inc.
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Endovenous Thermal Ablation
Photo courtesy of Diomed, Inc.
• Fiber, positioning, tumescent anesthetic, laser pullback
• All done under ultrasound guidance
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Endovenous thermal ablation - access
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Endovenous thermal ablation - access
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Endovenous thermal ablation - sheath
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Endovenous thermal ablation - sheath
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Endovenous thermal ablation –
tumescent anesthesia
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Endovenous thermal ablation - fiber
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Endovenous thermal ablation - firing
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Endovenous thermal ablation - deep
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Mechanicochemical ablation
“Clarivein”
Spinning wire plus injection of liquid sclerosant
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Mechanicochemical ablation
“Clarivein”
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Ambulatory Phlebectomy
(Microphlebectomy)
Removal of bulging veins
Local tumescent anesthetic
Micro incisions (2-3mm)
Especially useful for tributaries of GSV, SSV
Photo courtesy of Mitchel P. Goldman, MD
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Ambulatory phlebectomy
2. Vein is hooked
3. Section of vein is pulled
through with hemostat
1. 2-3mm incision is made
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Ambulatory Phlebectomy
Tumescent anesthesia, 0.1% buffered lidocaine with epinephrine
11 blade, 2-3mm incision
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Ambulatory Phlebectomy
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Treatment Results
Before After
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Endovenous Chemical Ablation
aka Ultrasound-guided Foam Sclerotherapy
Ultrasound-guided injections of a foamed sclerosant to close large varicose veins (2-7mm) not visible to the eye.
Sclerosant damages the endothelium and causes the vein to close and be reabsorbed over months
Should be followed up with compression
No incision, minimal pain, no recovery time
Medical procedure
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Physician compounded foam
Considered an “off-label” use of an FDA approved sclerosant
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Varithena microfoam
•FDA Approved •$$$$$ •Have to be quick as the foam breaks down somewhat rapidly
•Very nice venospasm
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Endovenous Chemical Ablation
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Sclerotherapy
Cosmetic procedure
Use a liquid sclerosant instead of foam
No more hypertonic saline
Veins slowly fade away. Will likely require multiple treatments.
Not like on Dr. Oz!
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Sclerotherapy Results ~ Spider Veins
Before After
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Compression and Vein Treatments
Compression stockings should be used after any vein treatment
30-40mmHg is best, 20-30mmHg can be used if hand strength/arthritis is an issue.
2 weeks after cosmetic procedures, 3 weeks after medical procedures
Some insurance requires a trial of compression before approving vein treatment --- hoop jumping
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Compression as conservative therapy
Some patients are not candidates for treatment
─ Age, mobility
15-20mmHg knee highs: great for everyday wear and control of mild swelling
Try compression over diuretics
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Venous Leg Ulcers
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Venous Leg Ulcers
Over 2.5 million people have venous leg ulcers in US and it is rising
Recurrence rate of venous ulcers approaches 70%2
Estimated per-episode cost of care can exceed $40,0001
Estimated 2 million workdays per calendar year are lost due to chronic venous ulcers1
1Rudolph DM, et al. J Wound Ostomy Continence Nurs 1998; 25: 248-55
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High Physical & Financial Costs
Lack of recognition/treatment of early symptoms and skin changes
Poor coordination of care ─ Multidisciplinary team approach
─ Primary care physician
─ Phlebologist/Vascular surgeon
─ Wound care/Compression
─ Bedside caregivers
─ Case manager
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Management of Venous Leg Ulcers
Address them EARLY, don’t wait. Compression (and lots of it)
Moisture control (problematic with wound care frequency)
Eliminate underlying venous disease
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EVRA Trial (Early Venous Reflux Ablation)
Sought to compare compression alone with compression plus ablation of venous reflux
20 centers in the UK
Median healing time in compression group: 82 days
Median healing time in compression/treatment group: 56 days
Time to recurrence favored treatment group
Improved QOL scores in treatment group
N Engl J Med 2018; 378:2105-2114
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Wound Care
Wound care plays an important role (mostly from compression)
No significant evidence for use of any particular topical product
Infrequent wound care (weekly) often leaves wounds macerated and delays healing (in my personal experience)
Wound care clinics are limited by available appointments in many cases
Avoid culturing an open wound bed which will be colonized without question
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Grafting / Skin substitutes
Should only be performed after eliminating venous reflux
Can speed healing if used along with good wound care and compression
EpiFix
─ A bioactive tissue matrix allograft composed of dehydrated human amnion/chorion membrane (dHACM) that preserves and contains multiple extracellular matrix proteins, growth factors, cytokines, and other specialty proteins.
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Compression – the key to success
The problem is venous hypertension
It takes a big squeeze, 30-50mmHg
Elastic compression vs Inelastic compression
Wound patients need lifelong compression in some form
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Elastic Compression
Compression stockings ($100)
High resting working pressure
Low active working pressure
Very tight ones are often fairly uncomfortable
Not the best option for venous ulcers
Don’t use ACE bandages
No TED hose (TEDs are for beds, $5)
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Inelastic compression
Best for healing wounds
Velcro compression garments (CircAid)
Short stretch bandaging (Comprilan)
Multilayer wraps
Unna Boot
Low resting working pressure
High active working pressure
Giraffe skin is inelastic (250mmHg at ankle)
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Pelvic Venous Disease
Reflux
─ Gonadal vein, internal iliac vein
─ Includes vulvar varicose veins
─ Pelvic escape veins
Obstructive
─ Non-thrombotic iliac vein lesions
─ Post-thrombotic iliac vein lesions
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Pelvic Venous Reflux
Reflux in the ovarian vein or internal iliac vein most common source (L>R)
Can cause visible vulvar veins that may course into the leg (pelvic escape veins)
Increased risk in multiparous women
Worse symptoms around menses
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Clinical Presentation
Symptoms can be non-specific
─ Generalized lethargy
─ Abdominal/pelvic tenderness
─ Pelvic heaviness and deep ache
─ Varicose veins, vulvar varices, hemorrhoids
─ Dysmenorrhea
─ Urinary frequency or rectal pain/pressure
─ Back pain
─ Depression
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Pathophysiology – Gonadal reflux
Compensated
─ Pelvic escape pelvic varices
─ Perineal, saphenous, vulvar varices
Uncompensated
─ Pelvic pain
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Pathophysiology – LRV obstruction
LRV crushed by SMA
Compensated
─ Left gonadal reflux pelvic pain
Uncompensated ─ Left kidney pressurized, flank pain, hematuria
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Non-thrombotic iliac vein lesions
May-Thurner syndrome
Pain and swelling often much worse on one side
Typically presents with iliofemoral DVT
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Post-thrombotic iliac vein lesion
Complication of iliofemoral DVT
Incomplete clot resolution leads to scarring and diminished venous outflow
May see “crossover” veins going across pubic symphysis
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Pelvic Venous Reflux – Imaging
Contrast venogram is best
─ Provides physiologic information
CT Venography or MR Venography is often required before contrast venography
In thin patients and with good technical skill, ovarian veins can be seen on ultrasound
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Pelvic Venous Reflux - Treatments
Treatments
─ Coil embolization
─ Foam sclerotherapy
Vulvar varicosities can be treated with foam sclerotherapy
Post-pregnancy: the only time VV may improve
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Iliac vein lesion workup and treatment
CT Venography, MR Venography often are first step
Intravascular Ultrasound (IVUS) is BEST
Treat with angioplasty and stenting IF patient is having significant symptoms, wounds, skin changes, chronic severe swelling, DVT
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DVT -- A serious problem
Every year in the USA: ─ As many as 900,000 people affected by DVT/PE
─ As many as 60,000 – 100,000 deaths (compared to 41,000 from breast cancer)
A leading cause of maternal death in developed countries
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Risk Factors for DVT
Prolonged bed rest
Prolong sitting or being in a cramped position
Surgery or major injury (especially orthopedic)
Age over 40
Smoking
Excessive weight (BMI>30)
Hypercoagulable genetic condition
High estrogen states
Dehydration
Cancer, cardiopulmonary disease, IBD
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DVT Treatments
Anticoagulation
─ LMWH – Enoxaparin, Dalteparin, Fondaparinux
─ Warfarin (must start with LMWH)
─ DOACs – Rivaroxaban, Apixaban (not in morbidly obese)
Thrombolysis (Iliofemoral DVT)
Regular Ambulation
─ Walk, walk, walk
Compression Stockings
─ 30-40 mmHg
─ Reduces pain and swelling
─ Encourages physiological thrombolysis
─ Prevents Post Thrombotic Syndrome (PTS)
Prevent Recurrence!
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Long-term complication of DVT
Approximately 40% of DVT patients will develop PTS within 1-2 years1
ACCP Guidelines direct
30-40 mmHg for a minimum of 2 years, post DVT2
Compression stockings reduce the risk of DVT or complications by 50%1
Post Thrombotic Syndrome (PTS)
1 Brandjes DP, et. al. Lancet 1997 ² 2008 ACCP Guidelines
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Questions?