MAC.DIALYSIS: Buttonhole Technique

Showing posts with label Buttonhole Technique. Show all posts

Saturday, 13 October 2012

BUTTONHOLE CANNULATION VS CONVENTIONAL CANNULATION – THE QUALITY OUTCOME

81. Which of the following is an important factor for successful buttonhole cannulation?
A. Consistent needle size, angle, and depth at each session
B. Changing the needle insertion site daily
C. Using sharp needles throughout the process
D. Avoiding scab removal at all costs
➡️ Answer: A. Consistent needle size, angle, and depth at each session

82. Which of the following best describes “tunnel tract infection” in buttonhole cannulation?
A. Infection along the needle tract beneath the skin at the buttonhole site
B. Infection in the central venous catheter
C. Urinary tract infection associated with dialysis
D. Infection limited to the bloodstream only
➡️ Answer: A. Infection along the needle tract beneath the skin at the buttonhole site

83. In comparison to conventional cannulation, buttonhole cannulation has been shown to:
A. Increase pain and discomfort
B. Decrease the number of needle infiltrations
C. Have no effect on bruising incidence
D. Increase vascular trauma
➡️ Answer: B. Decrease the number of needle infiltrations

84. Which is a recommended disinfectant for cleaning the buttonhole site before cannulation?
A. Plain water
B. Chlorhexidine gluconate
C. Isopropyl alcohol without antiseptic properties
D. Saline solution
➡️ Answer: B. Chlorhexidine gluconate

85. What is a primary reason for higher infection risk with buttonhole cannulation?
A. Multiple puncture sites
B. Repeated use of the same tract allowing bacterial colonization
C. Use of blunt needles causing trauma
D. Use of smaller needles
➡️ Answer: B. Repeated use of the same tract allowing bacterial colonization

86. Which is true about needle gauge used in buttonhole cannulation?
A. Larger gauge needles are used initially for tract formation, then smaller blunt needles are used
B. Only small gauge needles are ever used
C. Needle size changes every session
D. Needle gauge has no impact on cannulation success
➡️ Answer: A. Larger gauge needles are used initially for tract formation, then smaller blunt needles are used

87. A patient has repeated infections at the buttonhole site. What is the best next step?
A. Continue buttonhole cannulation with antibiotics
B. Switch to conventional cannulation technique
C. Ignore infections if mild
D. Use larger needles
➡️ Answer: B. Switch to conventional cannulation technique

88. Which is a potential advantage of buttonhole cannulation for patient independence?
A. It allows easier self-cannulation with less pain and anxiety
B. It requires more frequent clinical intervention
C. It limits patient involvement in care
D. It always requires a nurse to perform cannulation
➡️ Answer: A. It allows easier self-cannulation with less pain and anxiety

89. Which of the following statements about fistula longevity is correct?
A. Buttonhole cannulation is proven to shorten fistula life
B. Conventional cannulation always results in longer fistula survival
C. Buttonhole cannulation may preserve fistula by reducing repeated trauma
D. Cannulation technique does not affect fistula longevity
➡️ Answer: C. Buttonhole cannulation may preserve fistula by reducing repeated trauma

90. Which is a common reason for buttonhole cannulation failure?
A. Poor tract formation due to inconsistent needle placement
B. Use of blunt needles too early
C. Early removal of scabs
D. Excessive rotation of cannulation sites
➡️ Answer: A. Poor tract formation due to inconsistent needle placement

91. What is the recommended frequency for needle site rotation in conventional cannulation?
A. Every session
B. Weekly
C. Monthly
D. Never rotate
➡️ Answer: A. Every session

92. Which of the following is a hallmark of buttonhole cannulation technique?
A. Rotating needle sites regularly to avoid trauma
B. Creating a permanent scarred tunnel by cannulating the exact same spot and angle
C. Use of sharp needles every session
D. Avoiding scab removal at the site
➡️ Answer: B. Creating a permanent scarred tunnel by cannulating the exact same spot and angle

93. Which statement about infection prevention in buttonhole cannulation is true?
A. Scab removal before needle insertion is unnecessary
B. Proper hand hygiene and site disinfection are critical
C. Antibiotic ointments should never be used
D. Infection risk is negligible without antiseptic use
➡️ Answer: B. Proper hand hygiene and site disinfection are critical

94. How does buttonhole cannulation impact the patient’s experience during dialysis?
A. It generally causes more pain and anxiety
B. It tends to reduce pain and anxiety related to needle insertion
C. It has no impact on patient comfort
D. It requires longer cannulation time leading to discomfort
➡️ Answer: B. It tends to reduce pain and anxiety related to needle insertion

95. What is a common complication unique to buttonhole cannulation?
A. Tunnel tract infection
B. Hematoma formation due to site rotation
C. Central venous stenosis
D. Peritonitis
➡️ Answer: A. Tunnel tract infection

96. Which of the following best practices improves buttonhole cannulation outcomes?
A. Using blunt needles after the tract is formed
B. Using sharp needles every session
C. Avoiding scab removal before needle insertion
D. Frequently changing needle insertion sites
➡️ Answer: A. Using blunt needles after the tract is formed

97. What patient characteristic might influence the choice of buttonhole cannulation?
A. Immature AV fistula (<3 months old)
B. Patient needle phobia and difficult veins
C. Patients with peritoneal dialysis
D. Patients with central venous catheters
➡️ Answer: B. Patient needle phobia and difficult veins

98. Which of the following is NOT a benefit of buttonhole cannulation?
A. Less needle-related pain
B. Reduced hematoma incidence
C. Higher infection risk if aseptic technique lapses
D. Increased frequency of aneurysm formation
➡️ Answer: D. Increased frequency of aneurysm formation

99. What should be done if a buttonhole site shows signs of infection?
A. Continue cannulation with antibiotics
B. Immediately stop buttonhole cannulation and treat infection
C. Ignore minor symptoms
D. Increase needle size
➡️ Answer: B. Immediately stop buttonhole cannulation and treat infection

100. What is a critical step in the initial creation of a buttonhole tract?
A. Using blunt needles for the first cannulation
B. Consistent use of the same needle insertion site, angle, and depth with sharp needles
C. Avoiding antiseptic cleaning before needle insertion
D. Rotating needle sites frequently
➡️ Answer: B. Consistent use of the same needle insertion site, angle, and depth with sharp needles

Thursday, 26 July 2012

The History of Buttonhole Technique

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✅ History of Buttonhole Technique – MCQs

1. What is the buttonhole technique in hemodialysis?
A. A method of cannulating an arteriovenous fistula using the same site and angle to create a track
B. A technique to insert a central venous catheter
C. A way to access peritoneal dialysis catheters
D. A method of creating a new fistula
➡️ Answer: A. A method of cannulating an arteriovenous fistula using the same site and angle to create a track

2. When was the buttonhole technique first introduced or described?
A. Early 1970s
B. 1950s
C. 1990s
D. 2000s
➡️ Answer: A. Early 1970s

3. Who is credited with pioneering or popularizing the buttonhole technique?
A. Dr. Twardowski and colleagues
B. Willem Kolff
C. Belding Scribner
D. John Jacob Abel
➡️ Answer: A. Dr. Twardowski and colleagues

4. What was the main motivation behind developing the buttonhole technique?
A. To reduce pain and trauma associated with repeated needle sticks
B. To improve dialyzer efficiency
C. To eliminate the need for fistula creation
D. To reduce infection rates in peritoneal dialysis
➡️ Answer: A. To reduce pain and trauma associated with repeated needle sticks

5. The buttonhole technique involves creating a tunnel track by:
A. Repeated cannulation at the exact same site and angle over several sessions
B. Random cannulation at different sites
C. Using large bore needles only
D. Surgical creation of a tunnel under the skin
➡️ Answer: A. Repeated cannulation at the exact same site and angle over several sessions

6. What is a commonly reported benefit of the buttonhole technique?
A. Less pain during needle insertion
B. Increased blood flow rates
C. Higher dialysate purity
D. Faster dialysis sessions
➡️ Answer: A. Less pain during needle insertion

7. Which complication has been associated with the buttonhole technique compared to the traditional rope-ladder technique?
A. Higher risk of infection or tunnel tract infection
B. Higher rates of thrombosis
C. Lower dialysis adequacy
D. Increased vascular stenosis
➡️ Answer: A. Higher risk of infection or tunnel tract infection

8. In which patient population is the buttonhole technique often preferred?
A. Patients with difficult vascular access or painful cannulation
B. All newly created fistulas
C. Peritoneal dialysis patients
D. Patients with central venous catheters
➡️ Answer: A. Patients with difficult vascular access or painful cannulation

9. Which of the following is an alternative to the buttonhole technique for AV fistula cannulation?
A. Rope-ladder technique
B. Central venous catheter insertion
C. Peritoneal dialysis catheter placement
D. Surgical fistula ligation
➡️ Answer: A. Rope-ladder technique

10. Proper training and hygiene are essential to reduce which risk in buttonhole cannulation?
A. Infection
B. Bleeding
C. Thrombosis
D. Hypotension
➡️ Answer: A. Infection

11. The buttonhole technique is also known by what other name?
A. Constant-site cannulation
B. Rope-ladder cannulation
C. Stepladder technique
D. Random-site cannulation
➡️ Answer: A. Constant-site cannulation

12. The buttonhole technique was originally developed for patients using which type of vascular access?
A. Arteriovenous fistula (AVF)
B. Central venous catheter (CVC)
C. Arteriovenous graft (AVG)
D. Peritoneal dialysis catheter
➡️ Answer: A. Arteriovenous fistula (AVF)

13. How long does it typically take to establish a mature buttonhole track?
A. Approximately 6 to 10 consecutive dialysis sessions
B. Immediately after fistula creation
C. 1 to 2 weeks
D. More than 6 months
➡️ Answer: A. Approximately 6 to 10 consecutive dialysis sessions

14. What type of needles are typically used in buttonhole cannulation once the track is established?
A. Blunt needles
B. Sharp needles
C. Large bore needles only
D. Catheters
➡️ Answer: A. Blunt needles

15. Which of the following is a contraindication for using the buttonhole technique?
A. Infected or inflamed fistula site
B. Newly created fistula
C. Mature fistula with good blood flow
D. Patients with multiple prior cannulation sites
➡️ Answer: A. Infected or inflamed fistula site

16. Studies have suggested that the buttonhole technique may reduce:
A. Cannulation-related aneurysm formation
B. Dialysis adequacy
C. Vascular access thrombosis rates
D. Infection risk compared to rope-ladder technique
➡️ Answer: A. Cannulation-related aneurysm formation

17. Which practice is essential to prevent infections in buttonhole cannulation?
A. Strict aseptic technique and scab removal before needle insertion
B. Use of sharp needles every session
C. Changing needle insertion sites daily
D. Avoiding antiseptics
➡️ Answer: A. Strict aseptic technique and scab removal before needle insertion

18. What was a driving factor for developing the buttonhole technique in the 1970s?
A. High patient discomfort and damage from repeated needle insertions
B. High cost of dialysis membranes
C. Lack of trained staff
D. Need for faster dialysis sessions
➡️ Answer: A. High patient discomfort and damage from repeated needle insertions

19. Which of the following outcomes has been observed with buttonhole cannulation?
A. Reduced pain scores during cannulation
B. Increased incidence of stenosis
C. Decreased fistula blood flow
D. Increased hematoma formation
➡️ Answer: A. Reduced pain scores during cannulation

20. What is a common method used to form the buttonhole track?
A. Repeated cannulation with sharp needles at the same site and angle to create a tunnel
B. Surgical creation of a tunnel
C. Use of blunt needles from the first session
D. Random cannulation sites over the fistula
➡️ Answer: A. Repeated cannulation with sharp

21. In which patient group has the buttonhole technique shown the greatest benefit?
A. Patients with difficult or painful cannulation sites
B. Patients with newly created fistulas
C. Patients on peritoneal dialysis
D. Patients with central venous catheters
➡️ Answer: A. Patients with difficult or painful cannulation sites

22. What is a key difference in needle use between buttonhole and rope-ladder techniques after track formation?
A. Buttonhole uses blunt needles, rope-ladder uses sharp needles
B. Both use blunt needles
C. Buttonhole uses larger bore needles
D. Rope-ladder uses blunt needles only
➡️ Answer: A. Buttonhole uses blunt needles, rope-ladder uses sharp needles

23. How does the buttonhole technique potentially reduce aneurysm formation?
A. By repeatedly cannulating the exact same spot, preventing repeated trauma at multiple sites
B. By increasing blood flow velocity
C. By using smaller needles
D. By avoiding cannulation altogether
➡️ Answer: A. By repeatedly cannulating the exact same spot, preventing repeated trauma at multiple sites

24. Which of the following is a significant infection risk factor in buttonhole cannulation?
A. Improper scab removal before needle insertion
B. Use of blunt needles only
C. Rotating cannulation sites daily
D. Use of antiseptic solution
➡️ Answer: A. Improper scab removal before needle insertion

25. Buttonhole cannulation was inspired by which principle or concept?
A. Creating a tunnel track similar to a pierced ear or catheter tract
B. Random site rotation
C. Surgical graft placement
D. Use of only large bore needles
➡️ Answer: A. Creating a tunnel track similar to a pierced ear or catheter tract

26. What is a commonly reported patient satisfaction benefit of buttonhole cannulation?
A. Decreased pain and anxiety related to needle insertion
B. Increased dialysis time
C. Reduced blood flow rates
D. Need for fewer dialysis sessions
➡️ Answer: A. Decreased pain and anxiety related to needle insertion

27. What infection control practice is crucial specifically for buttonhole tracks?
A. Gentle scab removal with sterile technique before needle insertion
B. Use of non-sterile gloves
C. Avoiding cleaning of the site
D. Using sharp needles for all cannulations
➡️ Answer: A. Gentle scab removal with sterile technique before needle insertion

28. When buttonhole tracks become infected, what is a common treatment approach?
A. Antibiotics and sometimes surgical excision of the track
B. Increased dialysis frequency
C. Use of larger needles
D. Changing to peritoneal dialysis
➡️ Answer: A. Antibiotics and sometimes surgical excision of the track

29. Which statement best describes the impact of the buttonhole technique on vascular access longevity?
A. It may reduce trauma and prolong fistula lifespan but requires careful infection control
B. It shortens fistula lifespan
C. It increases thrombosis rates
D. It has no impact on fistula longevity
➡️ Answer: A. It may reduce trauma and prolong fistula lifespan but requires careful infection control

30. Which of the following is a contraindication to starting the buttonhole technique?
A. Presence of fistula infection or abscess
B. Mature fistula with adequate blood flow
C. Painful cannulation with conventional techniques
D. Patient preference for buttonhole
➡️ Answer: A. Presence of fistula infection or abscess

31. What type of needle is recommended for use once the buttonhole track is mature?
A. Blunt needle
B. Sharp needle
C. Large bore needle only
D. Intravenous catheter
➡️ Answer: A. Blunt needle

32. How often should the buttonhole track be cannulated in order to maintain its integrity?
A. Every dialysis session
B. Every other session
C. Weekly
D. Monthly
➡️ Answer: A. Every dialysis session

33. Which of the following complications has been reported more frequently with buttonhole cannulation compared to rope-ladder?
A. Staphylococcus aureus infections
B. Vascular stenosis
C. Aneurysm formation
D. Lower blood flow rates
➡️ Answer: A. Staphylococcus aureus infections

34. What is the recommended method to reduce infection risk during buttonhole cannulation?
A. Careful removal of scabs with sterile instruments and antiseptic skin preparation
B. Use of non-sterile gloves to avoid contamination
C. Skipping antiseptic preparation to avoid skin irritation
D. Rotating cannulation sites every session
➡️ Answer: A. Careful removal of scabs with sterile instruments and antiseptic skin preparation

35. Which of the following is a potential benefit of buttonhole cannulation?
A. Reduced aneurysm formation
B. Increased bleeding complications
C. Higher infection rates
D. Decreased dialysis adequacy
➡️ Answer: A. Reduced aneurysm formation

36. What is the typical duration required to form a mature buttonhole tunnel?
A. 6-10 sessions of repeated cannulation at the same site
B. 1 session
C. 3-4 weeks
D. 3-6 months
➡️ Answer: A. 6-10 sessions of repeated cannulation at the same site

37. Buttonhole technique is most suitable for patients with:
A. Established, mature arteriovenous fistulas with challenging cannulation
B. Newly created fistulas
C. Central venous catheters
D. Peritoneal dialysis catheters
➡️ Answer: A. Established, mature arteriovenous fistulas with challenging cannulation

38. What is the main reason for infection risk in buttonhole technique?
A. Scab formation over the buttonhole tract harboring bacteria
B. Use of blunt needles
C. Repeated rotation of needle sites
D. Use of sterile technique
➡️ Answer: A. Scab formation over the buttonhole tract harboring bacteria

39. The buttonhole technique reduces which patient discomfort compared to the rope-ladder technique?
A. Needle insertion pain
B. Dizziness
C. Hypotension during dialysis
D. Muscle cramps
➡️ Answer: A. Needle insertion pain

40. Which of the following is an important training aspect for staff performing buttonhole cannulation?
A. Consistent technique in needle angle and insertion site, plus strict aseptic technique
B. Rotating insertion sites each session
C. Avoiding antiseptics to preserve skin integrity
D. Using sharp needles only
➡️ Answer: A. Consistent technique in needle angle and insertion site, plus strict aseptic technique

41. What type of vascular access is the buttonhole technique primarily used for?
A. Arteriovenous fistula (AVF)
B. Central venous catheter (CVC)
C. Peritoneal dialysis catheter
D. Arteriovenous graft (AVG)
➡️ Answer: A. Arteriovenous fistula (AVF)

42. Which of the following is a recognized advantage of the buttonhole technique?
A. Less needle-related pain and easier cannulation
B. Decreased risk of vascular access stenosis
C. Reduced need for anticoagulation
D. Shorter dialysis treatment times
➡️ Answer: A. Less needle-related pain and easier cannulation

43. Which complication remains a concern and requires careful monitoring in patients using the buttonhole technique?
A. Infection, especially Staphylococcus aureus bacteremia
B. Dialyzer membrane failure
C. Peritoneal leakage
D. Electrolyte imbalance
➡️ Answer: A. Infection, especially Staphylococcus aureus bacteremia

44. How can the risk of infection in buttonhole cannulation be minimized?
A. Removing scabs gently with sterile tools and using antiseptic skin preparation
B. Skipping scab removal to avoid trauma
C. Using sharp needles every session
D. Avoiding skin cleaning to preserve natural flora
➡️ Answer: A. Removing scabs gently with sterile tools and using antiseptic skin preparation

45. Which clinical scenario is least appropriate for starting buttonhole cannulation?
A. A newly created AV fistula less than 6 weeks old
B. A mature AV fistula with painful cannulation
C. A patient with needle phobia
D. A patient with limited cannulation sites
➡️ Answer: A. A newly created AV fistula less than 6 weeks old

46. The buttonhole technique is sometimes compared with which other cannulation method?
A. Rope-ladder technique
B. Central venous catheterization
C. Peritoneal dialysis
D. Arteriovenous graft cannulation
➡️ Answer: A. Rope-ladder technique

47. Buttonhole technique reduces trauma to the fistula by:
A. Using the same needle track repeatedly, minimizing vessel wall damage
B. Changing needle insertion sites daily
C. Using larger bore needles
D. Avoiding needle use altogether
➡️ Answer: A. Using the same needle track repeatedly, minimizing vessel wall damage

48. What is a common patient complaint that buttonhole cannulation aims to address?
A. Pain during needle insertion
B. Dialysis-related hypotension
C. Electrolyte imbalances
D. Fatigue post dialysis
➡️ Answer: A. Pain during needle insertion

49. Which training element is critical for staff performing buttonhole cannulation?
A. Strict aseptic technique and consistent needle placement
B. Use of non-sterile gloves to improve dexterity
C. Rotating sites every session
D. Avoiding antiseptics to reduce skin irritation
➡️ Answer: A. Strict aseptic technique and consistent needle placement

50. Which statement about the buttonhole technique is TRUE?
A. It may increase infection risk if strict hygiene is not maintained
B. It completely eliminates risk of infection
C. It is suitable for all dialysis patients immediately after fistula creation
D. It requires changing the cannulation site every dialysis session
➡️ Answer: A. It may increase infection risk if strict hygiene is not maintained

Saturday, 23 June 2012

Buttonhole Cannulation--What do we know

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Buttonhole Cannulation – What Do We Know? (MCQs)

1. What is Buttonhole Cannulation?
A. A technique for peritoneal dialysis
B. A method for repeated cannulation at the same site in AV fistula
C. A type of vascular access surgery
D. A dialysis catheter placement method
✅ Correct answer: B

2. What is formed at the cannulation site during Buttonhole technique?
A. Thrombosis
B. Hematoma
C. Scar tissue
D. Epithelialized track (tunnel)
✅ Correct answer: D

3. What type of needle is used for cannulation in a mature Buttonhole track?
A. Blunt needle
B. Sharp needle
C. Butterfly needle
D. Central venous catheter
✅ Correct answer: A

4. Which of the following is an advantage of the Buttonhole technique?
A. Higher infection rate
B. Reduced pain during cannulation
C. Increased bleeding
D. Greater use of sharp needles
✅ Correct answer: B

5. During the track creation phase of Buttonhole cannulation, which type of needle is used?
A. Blunt needle
B. Catheter needle
C. Sharp needle
D. Arterial needle
✅ Correct answer: C

6. Which of the following patients is most suitable for Buttonhole technique?
A. Patients with AV graft
B. Patients with central line
C. Patients with newly created fistula
D. Patients with matured AV fistula with limited cannulation sites
✅ Correct answer: D

7. What is a key requirement to maintain a Buttonhole track?
A. Use different cannulators every time
B. Cannulate at random angles
C. Use of the same angle and depth consistently
D. Cannulate at a different site daily
✅ Correct answer: C

8. A potential complication of Buttonhole cannulation is:
A. Pneumothorax
B. Peritonitis
C. Localized infection or abscess
D. Cardiac tamponade
✅ Correct answer: C

9. Why is scab removal important before Buttonhole cannulation?
A. To reduce bleeding
B. To reduce infection risk and allow proper needle insertion
C. To promote scar formation
D. To avoid using blunt needles
✅ Correct answer: B

10. How often should the initial track (tunnel) be cannulated by the same person ideally?
A. Once only
B. By different staff for experience
C. By the same cannulator to maintain consistency
D. Randomly to avoid favoritism
✅ Correct answer: C

11. How many successful cannulations using a sharp needle are typically required to form a mature Buttonhole track?
A. 1–2 times
B. 3–5 times
C. 6–10 times
D. 15 times
✅ Correct answer: C

12. In Buttonhole cannulation, a key technique is to:
A. Rotate the needle to widen the tunnel
B. Insert the needle at a different angle each time
C. Maintain the same angle, direction, and depth
D. Use higher pressure to insert the needle faster
✅ Correct answer: C

13. The Buttonhole technique is NOT recommended in which of the following access types?
A. AV fistula
B. AV graft
C. Radiocephalic fistula
D. Brachiocephalic fistula
✅ Correct answer: B

14. Which factor is associated with a higher risk of infection in Buttonhole cannulation?
A. Daily use of antiseptic
B. Improper scab removal
C. Use of blunt needles
D. Rotating cannulation sites
✅ Correct answer: B

15. What is one of the most critical infection control practices before Buttonhole cannulation?
A. Soaking needles in alcohol
B. Applying a warm compress
C. Removing the scab using a sterile technique
D. Wiping with tissue paper
✅ Correct answer: C

16. Which of the following is a contraindication for Buttonhole technique?
A. Patient prefers self-cannulation
B. AV graft use
C. Mature fistula with limited sites
D. Stable AV fistula in use for over 6 months
✅ Correct answer: B

17. Which personnel are best to perform the initial Buttonhole track formation?
A. New trainees
B. Any rotating staff
C. Consistent, trained staff members
D. Patient only
✅ Correct answer: C

18. Which is a common misconception about Buttonhole technique?
A. It reduces pain
B. It decreases aneurysm formation
C. It increases needle dislodgement risk
D. It is suitable for all access types
✅ Correct answer: D

19. When cannulating a mature Buttonhole track, resistance is usually felt when:
A. The needle hits a valve
B. The needle is inserted too deep
C. The scab is not removed
D. The angle or direction is incorrect
✅ Correct answer: D

20. What is the primary goal of the Buttonhole technique in long-term dialysis patients?
A. Promote graft use
B. Reduce cost
C. Preserve access longevity and reduce trauma
D. Increase blood flow
✅ Correct answer: C

21. A patient using Buttonhole cannulation reports pain and swelling at the site. What should you suspect?
A. Proper cannulation
B. Track maturity
C. Local infection or abscess
D. Dehydration
✅ Correct answer: C

22. Which of the following is not a benefit of Buttonhole cannulation?
A. Easier self-cannulation
B. Reduced aneurysm formation
C. Reduced risk of local infection
D. Decreased infiltration
✅ Correct answer: C

23. One disadvantage of the Buttonhole technique is:
A. Inability to reuse needles
B. Increased rate of hematoma
C. Higher risk of infection if hygiene is poor
D. Need for general anesthesia
✅ Correct answer: C

24. What should be done immediately before cannulation with blunt needles in Buttonhole?
A. Massage the fistula
B. Apply alcohol swab only
C. Remove scab using sterile forceps or pick
D. Use heparin lock
✅ Correct answer: C

25. Why is consistent staff assignment important in Buttonhole cannulation?
A. Reduces salary cost
B. Ensures correct use of different tracks
C. Maintains consistency in angle, depth, and site
D. Avoids patient complaints
✅ Correct answer: C

26. During the healing phase of a Buttonhole track, what should NOT be done?
A. Keep using sharp needles
B. Allow the track to rest for a few days
C. Use blunt needles
D. Reinsert at the exact site and angle
✅ Correct answer: C

27. What is the minimum number of successful cannulations usually required to create a usable Buttonhole tunnel?
A. 2
B. 5
C. 6–10
D. 12–15
✅ Correct answer: C

28. Which of the following is true regarding blunt needles?
A. They are used to create new tunnels
B. They have a higher risk of infiltration
C. They are used only after tunnel formation
D. They are used in AV grafts
✅ Correct answer: C

29. Which infection prevention strategy is most critical with Buttonhole cannulation?
A. Rotating cannulation sites
B. Using antibiotics after dialysis
C. Strict aseptic technique and scab removal
D. Using only new gloves per shift
✅ Correct answer: C

30. Which patient education point is most essential for self-cannulating using Buttonhole technique?
A. Use new site every time
B. Use sharp needles always
C. Use same angle and depth every time
D. Alternate arms every week
✅ Correct answer: C

31. Which of the following is used to clean the Buttonhole site before scab removal?
A. Sterile water
B. Alcohol swab
C. Normal saline
D. Betadine or antiseptic solution (e.g., chlorhexidine)
✅ Correct answer: D

32. What is the risk if a non-mature track is cannulated with a blunt needle?
A. Aneurysm formation
B. Successful track formation
C. Bleeding and infiltration
D. Reduced infection risk
✅ Correct answer: C

33. During cannulation, you notice resistance at the usual angle. What is the correct action?
A. Apply force to insert the needle
B. Use a sharp needle to force entry
C. Withdraw and reassess angle and site
D. Push deeper
✅ Correct answer: C

34. How should scabs at the Buttonhole site be removed?
A. With gloved fingers
B. With sterile tweezers or pick under aseptic technique
C. With gauze soaked in alcohol
D. With water pressure
✅ Correct answer: B

35. Which of the following can help minimize pain during cannulation?
A. Using a larger gauge needle
B. Changing site frequently
C. Application of topical anesthetic (e.g., EMLA cream)
D. Using non-sterile gloves
✅ Correct answer: C

36. Which patient behavior increases risk of Buttonhole site infection?
A. Adherence to hand hygiene
B. Consistent cannulation technique
C. Touching scab or site with bare hands
D. Daily use of antiseptic
✅ Correct answer: C

37. What is the appropriate gauge size of blunt needles typically used for mature Buttonhole tracks?
A. 14G
B. 15G
C. 16G or 17G
D. 20G
✅ Correct answer: C

38. What should be done if a Buttonhole site becomes infected?
A. Continue using the same site
B. Skip dialysis
C. Stop using the site, start antibiotics, consider new site
D. Increase dialysate flow
✅ Correct answer: C

39. Buttonhole cannulation should ideally be done by:
A. Trainee staff only
B. The same few experienced cannulators
C. A different person daily
D. Patient relatives
✅ Correct answer: B

40. Why should cannulation be done at exact same angle each time in Buttonhole technique?
A. To make the tunnel wider
B. To reduce infection
C. To maintain the epithelial track and prevent trauma
D. To reduce the number of needles used
✅ Correct answer: C

41. Which of the following best describes the main difference between Buttonhole and rope-ladder cannulation techniques?
A. Buttonhole uses rotating sites; rope-ladder uses same site
B. Rope-ladder uses sharp needles only
C. Buttonhole uses same site, angle, and depth every time
D. Rope-ladder has higher infection risk
✅ Correct answer: C

42. The Buttonhole technique can help reduce which of the following complications?
A. Central line infections
B. Hemodialysis catheter blockage
C. Aneurysm and pseudoaneurysm formation in fistula
D. Hypertension
✅ Correct answer: C

43. What is the correct management if bleeding continues longer than usual after removing needles from Buttonhole site?
A. Re-cannulate immediately
B. Apply light pressure only
C. Apply firm pressure and monitor bleeding time
D. Leave site open
✅ Correct answer: C

44. Which of the following is true about epithelialization of Buttonhole tracks?
A. It refers to muscle thickening
B. It makes the tunnel softer
C. It forms a stable, scar-lined path for the needle
D. It prevents fistula maturation
✅ Correct answer: C

45. What does increased resistance or pain during blunt needle insertion into a Buttonhole site most likely indicate?
A. The tunnel is clear
B. A sharp needle is needed
C. Improper alignment with the track
D. The patient has low blood pressure
✅ Correct answer: C

46. If a Buttonhole site becomes too inflamed or infected, what is the next best step?
A. Ignore and proceed with cannulation
B. Switch to rope-ladder at same site
C. Stop using the site, allow healing, monitor and treat
D. Use a central venous catheter immediately
✅ Correct answer: C

47. Which of the following materials is preferred for scab removal before Buttonhole cannulation?
A. Cotton ball
B. Non-sterile gauze
C. Sterile pick or sterile forceps
D. Alcohol-soaked paper towel
✅ Correct answer: C

48. One reason some centers are cautious about using Buttonhole technique is:
A. Requires less staff
B. Lower blood flow rates
C. Risk of increased bloodstream infection if protocol is not followed
D. It’s more painful than sharp-needle cannulation
✅ Correct answer: C

49. How can facilities reduce infection rates in Buttonhole cannulation?
A. Avoid blunt needles
B. Switch to AV graft
C. Use strict antiseptic protocol, hand hygiene, and limit staff handling
D. Use warm compress before every dialysis
✅ Correct answer: C

50. What is the purpose of marking the Buttonhole site on the skin?
A. Cosmetic reasons
B. To reduce patient anxiety
C. To assist with consistent angle and location for cannulation
D. To show fistula location to new staff
✅ Correct answer: C

51. What is a primary reason for track loss in Buttonhole cannulation?
A. Using topical anesthetic
B. Daily use of blunt needles
C. Changing cannulation angle or depth
D. Applying antiseptic too early
✅ Correct answer: C

52. Which patient population may not be suitable for Buttonhole cannulation?
A. Pediatric patients with small fistulas
B. Adults with matured AVF
C. Patients performing home hemodialysis
D. Stable, long-term dialysis patients
✅ Correct answer: A

53. What is a recommended method to assess track readiness for blunt needle use?
A. Patient report of pain reduction
B. Formation of consistent scab
C. At least 6 successful sharp cannulations with same technique
D. Random attempt with blunt needle
✅ Correct answer: C

54. Buttonhole cannulation is especially helpful for patients who:
A. Require short-term access
B. Have poor hygiene practices
C. Need frequent catheter replacements
D. Have limited cannulation sites on the AVF
✅ Correct answer: D

55. Which step should immediately follow scab removal?
A. Apply gauze
B. Re-clean site with antiseptic
C. Start dialysis
D. Insert sharp needle
✅ Correct answer: B

56. If Buttonhole track is misaligned due to poor technique, what complication is most likely?
A. Hematuria
B. Thrombocytopenia
C. Infiltration and bruising
D. Seizures
✅ Correct answer: C

57. Which of the following statements is true regarding infection prevention in Buttonhole technique?
A. Scab removal can be skipped if the area looks clean
B. Hand hygiene is optional if gloves are worn
C. Antiseptic must be reapplied after scab removal
D. Patients should self-cannulate to prevent infection
✅ Correct answer: C

58. Why is it important to avoid “track switching” in Buttonhole sites?
A. It causes skin discoloration
B. It affects blood pressure
C. It may result in new tunnel formation or infiltration
D. It helps maintain symmetry
✅ Correct answer: C

59. A blunt needle should glide smoothly into a mature track. If resistance occurs, what’s the best step?
A. Force the needle
B. Ask another nurse to try
C. Withdraw, reassess angle, and reinsert gently
D. Switch to a larger gauge
✅ Correct answer: C

60. What is a best practice for tracking and maintaining Buttonhole cannulation quality?
A. Avoid documentation to reduce workload
B. Record cannulator, angle, depth, needle type daily
C. Rotate sites weekly to rest the area
D. Change antiseptic brand weekly
✅ Correct answer: B

⚠ Important Notice

MAC.DIALYSIS

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