managing ‘buttonhole’ complications surendra shenoy md., phd. washington university school of...
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Managing ‘buttonhole’ complications
Surendra Shenoy MD., PhD.Washington University School of Medicine
Barnes Jewish HospitalSt. Louis, Missouri
Disclosures
Laboratory and clinical research support from industry for
research related to transplant and vascular access
None of the research or non FDA approved products will be discussed in this
presentation
S.Shenoy©
How to access a fistula?
Cannulation techniques
Rope ladder technique
Area cannulation
Buttonhole cannulation
90◦ 45◦ 20◦
Terminology for AVF assessment
Vein depth
Skin
Vein
1.5mm 3 mm 5 mm
Tract length
Skin puncture
Vein puncture
Access needles and
6mm
placement
Bevel 6mm
Needle 2.6cm
Bevel 4mm
1 inch = 2.6 cm = 26 mm
Hemostasis following needle withdrawal & what is safe?
Aim for a tract of 6 - 9mm
Button hole technique
Tract 9.7mm
Vasculo –cutaneous fistula
Buttton hole – vasculo-cutaneous fistula
Key components- Obliquity of tract- Length of tract 6-9mm
Advantages of ‘Buttonhole’
Twardowski Z. Dial. Tran. ‘79; 8:9781 Lindsey RM, et. al. AJKD ‘03; 42:5Van Loon MM, et. al. NDT 10;25:225 Varhallen AM. NDT ‘07;22:260Kim M. HD Inter 2013;17:294
Less painNo local analgesicDecreased hemostasis timeBetter for self cannulationLess infiltrationLess hematomaNo aneurysmsUseful in limited access siteBetter patient acceptance
Challenges to create buttonholes
• Patient schedule and staff schedule do not match• Deep veins with high body mass index• Scab removal difficulties and techniques• Advancement to blunt needle• Inadequate BH formation• Cannulation during patient hospitalization• Increased missed cannulations
Ball LK. Neph nurs 2006;33:299Toma ST. ADC 2005; Tampa
Buttonhole complications
Infection- Contact dermatitis- Needle insertion site infection - Septicemia hospital admission in NHD
Staphylococcus Aureus
Van EPS CL. HD Int. 2010;14:451Nesrallah GE et.al CJASN 2010;5: 1047
Contact dermatitis
Identify the offending agente.g. Tape, topical ointments, dressing, chlorhexedine
Local infection
Local infection - surgical management
NO Catheter
Potential reasons for problems
Sub clinical infiltration
Secondary infection
Infiltrate getting infected
Cause for infiltration
Improper creation of ‘Buttonhole’
Short tracts
When fistula outflow is superficialKeep needle as parallel to skin as possible
Stick on sideof vessel
Not on top
Lateral approachfor cannulation
Shorttract
Short tractbleeding
Managing Buttonhole infections
Aseptic techniqueStaff trainingTopical antibiotic useCreating better buttonholes‘Biohole’ device or ‘Clampcath’
Marticorena RM. HD Int. 2006; 10:193Toma S. Neph Dial 2003;18:2118Nesrallah GE. CJASN2010; 5:1047
SummaryButton hole or single site puncture
technique has significant advantage andspecific applications in certain AVF
situation Tract length and obliquity are extremelyimportant for the safety and function of
this technique
Standardization of creation and care usingpatient and staff education may be beneficial
for increasing the safety and utility