film compression bandage - tagungsmanagement · (e.g. medical cs for 2 – 6 weeks day over) •...
TRANSCRIPT
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Film Compression Bandage
A new modality to improve Sclerotherapy of Superficial Varicosities.
Johann Chris Ragg, MD
founder & head of angioclinic® vein centers
founder & head of SWISS VX vein research labs Berlin – Munich - Zurich
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• inventor of film compression bandage
• patents WO2015124669A1, EP20140155794
• investigational use
• no financial support for study or presentation
Disclosures
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• stretchable, elastic, very thin (< 20 m) • transparent (”invisible”) • breathable/vapor permeable by micropores • self-adhesive (hypoallergenic glue)
Polymer Film Compression Bandage
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symptoms: 0 – 10 10 – 20 > 20 > 30 yr.
severity diagnostics
The disease begins long before reflux or symptoms
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Future of Venous Insufficiency
• compression stockings • vein stripping • phlebectomy
• endovenous treatment • varices: sclerofoam + film • stockings: prevention
100 years 30 years
Pr even t i on
Maybe, in 30 years venous insuffiency can be prevented?
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Purpose of compression after endovenous treatments
• prevention of edema, thrombosis: few cases
• limitation of bleedings: < 2 h (pad, bandage)
• regression of treated veins
• focus on (large) superficial varices
Rethink Compression
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Standards in Phlebology Collection: Phlebectomy and foam sclerotherapy from pysician´s website advertisments, meant to impress positively! (But: Residuals, stainings, scars)
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for superficial varicosities
• one-step solution
• immediate effect
• fast, reasonable
• method to replace surgery
Aims
pre post
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More than 15 Mio. cases per year to treat*!
• optimized sclerofoam
• film compression bandage
• stockings: optional
• no anesthesia, no wounds, no nerve lesions, no scars
* estimation world-wide for European standard populations
Aims
pre post
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To improve compression after foam sclerotherapy:
1) effectivity (no more bulging)
2) continuity
3) comfort
clinical success
closure & absence of symptoms
Aims
pre post
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skin
bandage
vein
How does it work? protruding vein: maximum contact of vein and skin textile media: no adhesion, weak fixation
© Ragg JC 2015
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skin
stocking
vein
Textile Compression
• no continuous use • medium will slide on skin • vein will partially protrude again • still considerable contact zone
© Ragg JC 2015
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GSV, patient standing
GSV, horizontal position
GSV 2 min. post sclerofoam
Vein Lumen pre and post Sclerofoam
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1. Effectivity: Synergy of Film, Glue and Skin
Unit of film and skin: When the vein tries to regain its previous size, it is limited by the elasticity of the film AND the elasticity of the skin, local AND whole circumference (“triangle of constriction“)!
skin vein
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skin
film
vein
• functional unit of film and skin • vein expansion space is reduced • contact zone to skin is reduced • less blood to resorb • less inflammation • less staining
© Ragg JC 2015
Compression Film Bandage
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Minimize Vein Diameter, get it Fixed!
film compression during vein spasm
vein before foam & film bandage
© Ragg JC 2015
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… achieved by adhesive film!
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14:20 14:31
1. Effectivity (no more bulging veins)
Best effect: •bulging varice (space limitation) •small radius (pressure)
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53 yr. old female, varice known for 30 years. Pre and two days after foam sclerotherapy and film compression bandage (+ MCS)
Effectivity (no more bulging veins)
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pre foam & film 14 d
25 y/o female football amateur, CFB, no MCS
© Ragg JC 2015
Effectivity (no more bulging veins)
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Effectivity in spite of Low Concentric Pressure
© Ragg JC 2015
12 – 15 ( - 23) mmHg 10 – 15 – 30% elongation
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* lumen during initial compression
lumen after loss of pressure
common media: • pressure discontinued • veins refill • more thrombus to resorb • more inflammation
aim: • continuous pressure • vein size remains small • less inflammation • less stainings
2. Benefit of Continuous Compression
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Continuous and effective compression...
... has been a demand since the very early days of sclerotherapy, but difficult to practice.
(FEGAN, Lancet 1963;2:109)
Current compression techniques (e.g. medical CS for 2 – 6 weeks day over) • symptomatic inflammations • local discomfort • nasty stainings in 20 – 60% of the cases in particular in superficial varices incidence increases with vein size. pre day 14
in spite of MCS
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Best: Compression by water! - very smooth pressure gradient - no “stiffness“ - may be partially imitated by compression film
3. Comfort of Compression
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elongation
tension
film bandage
lesser stiffness, lower working pressure
Physical Issues
compression stocking
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Film Patch
aids for cover removal
non-elastic support film film layer glue layer glue cover
Tegaderm® Roll OpSite®
There may be suitable films, known from transparent patches, but they are not applicable as a bandage
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perforations
aids for cover removal
support film: elastic and segmented to allow pretension film layer (polyurethane) acrylic glue layer glue cover
Film Compression Bandage
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Film Compression Bandage
perforations
aids for cover removal
prototype manufacturing (120 x 2000 mm) • removal of standard lower liner • segmentation of lower liner • overlapping repositioning of lower liner • removal of upper liner • segmentation of upper liner • overlapping reposition of upper liner • option: exchanging upper liner to a flexible film (coloured cling film)
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Purpose: Longitudinal Removal of Liners
perforations or gap
aids for cover removal
25 cm 25 cm
25 cm 25 cm
film
glue covering liner
top liner
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Prototypes using approved film and glue (3M Inc.) with modified supportive layers (Venartis Inc.) • 82 patients (49 f, 33 m, 26 – 68 y.) • 120 legs (shaved) • superficial varicosities, 5 - 12 mm Ø (mean: 7.8) • sports and showers > 4 x per week • foam sclerotherapy (Aethoxysklerol 1%, 1+4)
* Ragg, JC: Compression film bandage. A new modality providing continuous and sports-suitable vein compression after foam
sclerotherapy. Phlebologie 2015: 44 (5), 225–292
First Prospective Randomized Study (2014)*
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modality wearing time (days)* n
A) CFB + MCS 14 d CFB + 14 d MCS 40
B) MCS 28 d 40
C) CFB 14 d 40
* CFB limited to 14 due to prior microbiological testing. Bacterial growth reduced with film bandages compared to compression stockings; Ragg JC, Phlebologie 2014; 43; A
Randomization and Wearing Time
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CFB+MCS MCS CFB
Mean Vein Diameter Reduction (week 4)
50%
25%
0
48.5%
39.1% 42.3%
CFB+MCS MCS CFB
range 31 - 58% 28 – 51% 28 – 53%
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Effect of CFB14 + MCS28: just slightly better than CFB14 alone.
Additional 14 d of MCS does not provide relevant improvement compared to CFB alone (but + 14 d CFB does!).
28 14 28 14
Mean Vein Diameter Reduction (week 4)
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Diameter Reduction (week 2, MCS)
Although the mean diameter reduction was rather similar (+/- 10%) with different compression media, it was significantly different in certain in areas with and without film.
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Diameter Reduction (week 2, MCS)
Obvious when you compare to native varice!
post pre
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CFB+MCS MCS CFB
50%
25%
0
5.0%
57.5%
5.0%
CFB+MCS MCS CFB
Symptomatic Inflammation (week 2)
pain, sensitive indurations or reddening along vein
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CFB versus MCS: stat. highly significant
no symptoms while CFB is on skin
Symptomatic Inflammation (week 2)
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43 y/o female cleaning worker sports: bicycling 1h/d
Example
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first application
covering the knee
No MCS
color markings left for study purpose
Early Experience – is phlebectomy redundant?
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2 weeks
No symptoms!
result
Early Experience
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Case: male 56 y/o, table tennis amateur; CFB, no MCS;
No signs of inflammation in spite of large varicosities.
pre 14 d
“no symptoms while CFB is on skin“
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48 y/o male, mountain biker, large varicosities (6-18 mm) due to LSV insufficiency. CFB + MCS.
“no symptoms while CFB is on skin“
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CFB vs. MCS: Reduction: > 85%
Removal of Thrombus (until week 8) (expression, aspiration)
50%
25%
0
7,5%
57,5%
10%
CFB+MCS MCS CFB
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week 2 week 8
some cases (10.0%) developed inflammatory symptoms after removal of film bandage.
may need film renewal + continuation (1 – 2 weeks)
Symptomatic Inflammation
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Studies continued:
- now including 450 cases
- wearing time comparison 14 vs. 28 d
- extension of indications
Update: Film Compression Bandage
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Modality wearing time (days) n
A) CFB alone
B) CFB + MCS
C) MCS alone
CFB: Compression film bandage, MCS: Medical compression
150
150
150
14 d (n=100) 28 d (n = 50)
14 d (n = 100) 28 d (n = 50)
CFB (14/28) + MCS (14+28)
Update: Film Compression Bandage (8/2016)
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%
60
40
20
film 14 film 28 + MKS + MKS MKS 14 MKS 28
9.3% 5.3%
8.7%
4.7%
62.7%
51.3%
Symptomatic Inflammation (until week 8)
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%
60
40
20
film 14 film 28 + MKS + MKS MKS 14 MKS 28
9.3% 5.3%
8.7% 4.7%
62.7%
51.3%
Symptomatic Inflammation (until week 8)
• 28 days of compression – always better than 14 d, but more effort & cost • future criteria for 2 x 14 d film : diameter > 8 mm, or uneven foam distribution
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Very large varicosities (> 8 mm): Higher pressure by increased elasticity (double diameter film, 30m)
pre post, DD-film
Alternative: “DD Film” (under evaluation)
enhanced compression
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skin irritations
skin reddening 13/300 (4.3%)
sweating, heat, intense sports
allergies to acrylic glue: may occur
case shown: male 26 y/o, 23 km run, day 10.
Action: 15 min. blow-dryer, bandage renewed
© Ragg JC 2015
Film-Related Problems
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skin lesions: 13/300 (4.3 %)
causes:
- too much tension at margin
- unclear in some cases
Film-Related Problems
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Film-Related Problems
• Extra time may be required as no bloody spot should be covered with film.
• Solution:
Bandage room pre post
© Ragg JC 2015
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Insufficient overlapping. Bandage renewed day 7.
pre foam & film 7d 14 d
Film Renewal (9.2%)
© Ragg JC 2015
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Dissolution of film at the (upper) margin
• minor degree: > 20% of cases
• requiring film renewal: < 5% of cases
Case: Sports & shower every day.
Note: Discoloration almost zero below film!
Film Renewal
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• In general, it is not intended to cover the foot with film (stress by walking, sweating at sole of foot)
• To avoid or to treat distal congestion:
Combine film with MCS.
Foot- or Ankle Edema
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The majority of patients dislikes to wear compression stockings or bandages after endovenous treatments.
looks ugly worse than all treatment
no showers exhausting doesn´t fit cant´do it
feels terrible
3. Wearing Comfort
(but should get used to stockings to use them for prevention!)
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0 wearing not tolerated, finished < d 3
1 wearing not tolerated, finished d 4 - 12
2 frequent & significant discomfort (> 75% of wearing time)
3 occasional but significant discomfort (< 25% of wearing time)
4 moderate discomfort
5 minor discomfort (> 75% of wearing time)
6 occasional minor discomfort (< 25% of wearing time)
7 minor discomfort during particular stress (e.g. kneeling, sport movements)
8 occasional perception of the medium (< 25% of wearing time)
9 almost no perception of the medium during daily activities
10 no perception of the medium during daily activities and at night
*Refers to wearing only! Does not include effort to put medium on or to take it of!
Wearing Comfort Scale*
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wearing comfort
CFB+MCS MCS CFB * rated by the patients, 10 degree scale (10 = perfect, no perception)
Mean Comfort Score
10
5
1
6.6
4.3
9.2
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Wearing Comfort
CFB+MCS MCS CFB
CFB is much more comfortable than MCS
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Wearing Comfort
CFB+MCS MCS CFB
CFB + MCS: more comfortable than MCS alone
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68 yr. old patient, daily swimming (arthritis)
Additional Comfort of CFB: Swimming next day
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No problem!
Additional Comfort: Daily Showers
film
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Patient can wear any shoes. Or none. Note: Color marking left for study purpose. Film exchange 1-2 per week.
Extended indications: Foot Varicosities
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64 y/o female, both images in standing position
pre post, 15 min.
Extended indications: Foot Varicosities
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(tested in few esthetic cases – which bandage is nicer?)
© Ragg JC 2015
Extended indications: Arm veins (esthetic)
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No improvisation as soon as professional solution is available!
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mapping LSV laser microfoam film bandage
Extended Indications: Complex Cases
0:00 11:54 14:23 18:00 min.
Today it is possible to perform even complex cases with a single catheter access and rapidly achieve a stable, good-looking result. Patients love it!
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Compression film bandage:
• significantly improves vein regression of foam-treated superficial varicosities (p < 0.01)
• prevents symptomatic inflammation
• provides most comfortable vein compression
• allows any work, sports, showers, social life
Conclusions
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Future recommendations:
• Compression stockings as far as general condition (e.g. PTS, edema, standing profession…) requires; • Film bandage: for 2-4 weeks after endovenous treatment in every case with superficial varicosities • Film bandage plus compression stockings (low pressure): Very good option to get patients used to long-term wearing for venous prevention!
Conclusions
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Prognosis: • “Foam & film” is not comparable fo microfoam alone. It takes the film to outperform phlebectomy. • “Foam & film” will replace phlebectomy just like thermo-occlusion replaced saphenous stripping • Reimbursement will rise, as quality and comfort rise. • > 15 Mio. cases worldwide per year waiting for compression film application
Conclusions
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Thank you for your attention!
Dr. Ragg Work Group: www.venartis.org Ragg, JC: Compression film bandage. A new modality providing continuous and sports-suitable
vein compression after foam sclerotherapy. Phlebologie 2015: 44 (5), 225–292