Skip to main content
. 2023 Mar 22;7(2):e10855. doi: 10.1002/aet2.10855

TABLE 2.

Results of each Delphi round.

Item number Delphi round 1 Delphi round 2 Delphi round 3 Delphi round 4 Final version of item
Mean; median; SD Modification Mean; median; SD Modification Mean; median; SD Modification Mean; median; SD Modification
1. Obtains informed consent

6.0

7.0

2.0

Added subtext: “Except in urgent cases”

6.88

7.0

0.314

Modified to “May not be possible in emergent cases”

6.77

7.0

0.682

N/A

6.77

7.0 0.628

N/A 1. Obtains informed consent
  • May not be possible in emergent cases

2. (Originally checklist item #3)

Positions patient appropriately
  • Sits on edge of bed leaning forward with arms resting on a table with a pillow
  • Alternatively: lateral decubitus with operated side up
  • Alternatively: supine or semirecumbent (with ipsilateral hand behind or above head if planning lateral approach)

6.55

7.0 0.831

Added to text: “in a supported manner”

Cut from first subtext: “with arms resting on a table with a pillow”

Cut from third subtext: “(with ipsilateral hand behind or above head if planning lateral approach)”

Added fourth subtext: “Alternatively: supine oblique, as when performing procedure under CT guidance”

6.88

7.0

0.314

Moved from Step #3 to Step #2

Modified first subtext to: “Sitting on edge of bed and leaning forward”

6.88

7.0

0.314

N/A

6.77

7.0 0.628

N/A 2. Positions patient appropriately in a supported manner
  • Sitting on edge of bed and leaning forward

  • Alternatively: lateral decubitus with operated side up

  • Alternatively: supine or semirecumbent

  • Alternatively: supine oblique, as when performing procedure under CT guidance

3. (Originally checklist item #4)

Inspects chest wall

6.44

7.0

0.831

N/A

6.33

7.0

1.56

Moved from Step #4 to Step #3

6.77

7.0

0.682

N/A

6.55

7.0 0.831

N/A 3. Inspects chest wall

4B. (Originally checklist item #5)

Identifies effusion or pneumothorax (as applicable) via ultrasound

5.44

6.0

2.006

Added to text: “or CT”

6.88

7.0

0.314

Moved from Step #5 to Step #4

7.0

7.0

0

Cut step from checklist

(Cut from final checklist)

Identifies effusion or pneumothorax (as applicable) via ultrasound or CT

4. (Originally checklist item #6)

Uses ultrasound as a guide to mark an appropriate site of entry
  • Ideally, an intercostal space one to two ribs below the upper level of fluid

5.55

6.0

1.892

Modified to “Using ultrasound or CT as a guide, marks an appropriate site of entry”

Cut “Ideally, an intercostal space one to two ribs below the upper level of fluid”

6.44

7.0

0.955

Moved from Step #6 to Step #5

6.33

7.0

1.247

Moved from Step #5 to Step #4

Modified to “Using imaging (e.g., US or CT) as a guide …”

6.44

7.0

1.571

N/A 4. Using imaging (e.g., US or CT) as a guide, marks an appropriate site of entry

5. (Originally checklist item #8)

Opens kit

6.22

7.0

1.872

N/A

7.0

7.0

0

Moved from Step #8 to Step #6, before step “Washes hands”

7.0

7.0

0

Moved from Step #6 to Step #5

7.0

7.0

0

N/A 5. Opens kit

6. (Originally checklist item #7)

Washes hands

6.22

7.0

1.872

N/A

7.0

7.0

0

Swapped positioning to come after step “Opens kit”

6.66

7.0

0.942

Moved from Step #7 to Step #6

6.66

7.0

0.942

N/A 6. Washes hands

7. (Originally checklist item #9)

Applies cap, mask, sterile gown

6.33

7.0

1.05

Modified to “Dons appropriate personal protective equipment”

7.0

7.0

0

Moved from Step #9 to Step #8

6.77

7.0

0.682

Moved from Step #8 to Step #7

6.88

7.0

0.314

N/A 7. Dons appropriate personal protective equipment

8. (Originally checklist item #10)

Applies sterile gloves

6.66

7.0

0.942

N/A

7.0

7.0

0

Moved from Step #10 to Step #9

7.0

7.0

0

Moved from Step #9 to Step #8

7.0

7.0

0

N/A 8. Applies sterile gloves

9. (Originally checklist item #11)

Arranges material appropriately, including placing straightening catheter in pigtail

6.11

7.0

1.286

N/A

7.0

7.0

0

Moved from Step #11 to Step #10

Modified to “Arranges materials appropriately, including placing internal stiffener into pigtail catheter”

6.88

7.0

0.314

Moved from Step #10 to Step #9

6.66

7.0

0.942

N/A 9. Arranges materials appropriately, including placing internal stiffener into pigtail catheter

10. (Originally checklist item #12)

Preps over marked site and surrounding skin with chlorhexidine or appropriate alternative

6.77

7.0

0.628

N/A

7.0

7.0

0

Moved from Step #12 to Step #11

7.0

7.0

0

Moved from Step #11 to Step #10

7.0

7.0

0

N/A 10. Preps over marked site and surrounding skin with chlorhexidine or appropriate alternative

11.

(Item did not exist in initial checklist)

N/A Created new item #13: “Applies sterile drape, leaving only the procedure site exposed”

7.0

7.0

0

Moved from Step #13 to Step #12

6.88

7.0

0.314

Moved from Step #12 to Step #11

7.0

7.0

0

N/A 11. Applies sterile drape, leaving only the procedure site exposed

12. (Originally checklist item #2)

Performs a preprocedure timeout immediately before procedure
  • Including confirmation of: patient ID, procedure, and site by all members of team performing procedure.

6.77

7.0

0.628

Posed question to experts: “Should the step above (“time out”) be positioned as is or immediately after step 7 “Washes hands”?

7.0

7.0

0

Moved from Step #2 to Step #13

Cut “doing procedure”

Posed question to experts: “Should the step above (“time out”) be positioned as‐is? If not, after which step should it be placed?”

7.0

7.0

0

Moved from Step #13 to Step #12

Modified to “verification of patient ID”

Added text “(including laterality)”

7.0

7.0

0

N/A 12. Performs a preprocedure time out immediately before procedure
  • Including verification of patient ID, procedure, and site (including laterality) by all members of the team

13. Reconfirms that puncture site is on the superior aspect of lower rib of the selected intercostal space
  • Must make puncture on top, never bottom of rib

6.33

7.0

1.247

Moved from Step #13 to Step #14

6.44

7.0

0.955

Modified to “Confirms that the marked entry site is immediately above the lower rib bordering the selected intercostal space”

6.22

7.0

1.314

Moved from Step #14 to Step #13

6.44

7

1.065

N/A 13. Confirms that the marked entry site is immediately above the lower rib bordering the selected intercostal space
14. Injects lidocaine at site of procedure
  • Subcutaneous injection, 25‐ to 22‐G needle, wheal formation, then deeper into skin, aspirating before each injection for evidence of blood or entry into pleura; when pleural fluid or air obtained, note depth, inject 2–3 mL more to anesthetize the parietal pleura

6.77

7.0

0.415

Moved from Step #14 to Step #15

7.0

7.0

0

Modified text to “Injects local anesthetic (for example, lidocaine) at the entry site”

Modified subtext to three separate subtext points:

“Using 25‐ to 22‐G needle, creates a superficial wheal”

“Then injects deeper into skin, aspirating before each injection for evidence of blood or entry into pleura”

“When pleural fluid or air is obtained, notes depth, and injects additional 2–3 mL of anesthetic to anesthetize the parietal pleura”

6.66

7.0

0.942

Moved from Step #15 to Step #14

Changed subtext “injects additional 2–3 mL of anesthetic” to “injects additional anesthetic”

7.0

7.0

0

Added to subtext point 3: “pulls back needle slightly” 14. Injects local anesthetic (for example, lidocaine) at the entry site
  • Using a 25‐ to 22‐G needle, creates a superficial wheal

  • Then injects deeper into skin, aspirating before each injection for evidence of blood or entry into pleura

  • When pleural fluid or air is obtained, notes depth, pulls back needle slightly, and injects additional anesthetic to anesthetize the parietal pleura

15. After reconfirming position immediately above the rib, uses appropriate blade to make a superficial skin incision that is parallel to the rib
  • Typically, a No. 11 blade is used.

  • Keep incision superficial, enabling entry of catheter through the epidermis without causing injury to soft tissues or running the risk of lacerating an intercostal vessel

6.77

7.0

0.628

Moved from Step #15 to Step #16

7.0

7.0

0

Modified second subtext to “Keeps incision superficial, enabling entry of catheter through the epidermis without causing injury to deeper structures”

6.66

7.0

0.942

Moved from Step #16 to Step #15

7.0

7.0

0

N/A 15. After reconfirming positioning immediately above the rib, uses appropriate blade to make a superficial skin incision that is parallel to the rib
  • Typically, a No. 11 blade is used

  • Keeps incision superficial, enabling entry of catheter through the epidermis without causing injury to deeper structures

16. Attaches appropriate sized syringe to large hollow bore needle hub (typically, an 18‐G needle is used) and after reconfirming position immediately above the rib, introduces needle through the incision site

6.22

7.0

1.474

Moved from Step #16 to Step #17

Added subtext “If using real‐time imaging guidance, use of a syringe may be omitted”

6.66

7.0

0.94

Modified text to “Attaches appropriately sized syringe to the hub of a large hollow‐bore needle”

6.66

7.0

0.942

Moved from Step #17 to Step #16

6.33

7.0

1.885

N/A 16. Attaches appropriately sized syringe to the hub of a large hollow‐bore needle (typically, an 18‐G needle is used) and after reconfirming position immediately above the rib, introduces needle through the incision site
  • If using real‐time imaging guidance, use of a syringe may be omitted

17. While inserting needle, continuously aspirates syringe to immediately recognize fluid or air return from pleural space

6.0

7.0

2.0

Moved from Step #17 to Step #18

Added subtext “If using real‐time imaging guidance, this step may be omitted”

6.66

7.0

0.94

N/A

6.88

7.0

0.314

Moved from Step #18 to Step #17

7.0

7.0

0

N/A
17. While inserting needle, continuously aspirates syringe in order to immediately recognize fluid or air return from pleural space
  • If using real‐time imaging guidance, this step may be omitted
18. Removes syringe from needle hub while carefully maintaining position of needle
  • Once syringe removed, places gloved thumb over hub of needle

6.0

7.0

2.0

Moved from Step #18 to Step #19

Posed question to experts: “Should the subtext pertaining to ‘places gloved thumb over hub of needle’ be kept or removed?”

Added subtext “If using real‐time imaging guidance, use of a syringe may be omitted”

6.55

7.0

0.955

Cut subtext “Once syringe removed, places gloved thumb over hub of needle”

7.0

7.0

0

Moved from Step #19 to Step #18

7.0

7.0

0

N/A 18. Removes syringe from needle hub while carefully maintaining position of needle
  • If using real‐time imaging guidance, use of a syringe may be omitted

19. Threads guidewire through hollow‐bore needle
  • The guidewire should be inserted approximately twice the distance from the skin to pleural space. This can be estimated using ultrasound or alternatively can be estimated as twice the length of the inserted portion of the needle
  • Placing guidewire too superficially or too deeply should be avoided
  • If resistance to guidewire insertion met, stops and reconfirms placement of needle

6.44

7.0

1.065

Moved from Step #19 to Step #20

Modified first subtext to “The guidewire should be inserted at least several centimeters beyond the tip of the needle”

Cut second subtext

7.0

7.0

0

Modified text to “Threads guidewire through the hollow‐bore needle”

Modified second subtext to “If resistance to guidewire insertion is encountered, stops and reconfirms placement of needle”

7.0

7.0

0

Moved from Step #20 to Step #19

7.0

7.0

0

N/A 19. Threads guidewire through the hollow‐bore needle
  • The guidewire should be inserted at least several centimeters beyond the tip of the needle

  • If resistance to guidewire insertion is encountered, stops and reconfirms placement of needle

20. While continuously holding guidewire, removes hollow‐bore needle from site

7.0

7.0

0

Moved from Step #20 to Step #21

7.0

7.0

0

Modified text to “While continuously holding guidewire, removes hollow‐bore needle”

7.0

7.0

0

Moved from Step #21 to Step #20

7.0

7.0

0

N/A 20. While continuously holding guidewire, removes hollow‐bore needle
21. While continuously holding guidewire, inserts dilator with a clockwise/counterclockwise twisting motion over guidewire until an abrupt loss of resistance (i.e. “give”) is felt

6.33

7.0

1.563

Moved from Step #21 to Step #22

Modified text to “While continuously holding guidewire, inserts dilator over guidewire until an abrupt loss of resistance (i.e. ‘give’) is felt.”

Added subtext “Subsequently, using small back and forth movement (racking) of the guidewire, confirms that it is freely moving and not kinked.”

6.55

7.0

0.955

Modified text to “While continuously holding guidewire, inserts dilator over guidewire”

Added subtext “The appropriate depth of dilator placement may be determined using the previously noted depth in Step 15 and/or when an abrupt loss of resistance (i.e., ‘give’) is felt”

6.88

7.0

0.314

Moved from Step #22 to Step #21

6.88

7.0

0.314

N/A 21. While continuously holding guidewire, inserts dilator over guidewire
  • The appropriate depth of dilator placement may be determined using the previously noted depth in Step 15 and/or when an abrupt loss of resistance (i.e., “give”) is felt

  • Subsequently, using small back and forth movement (racking) of the guidewire, confirms that it is freely moving and not kinked

22. While continuously holding guidewire, removes dilator

6.88

7.0

0.314

Moved from Step #22 to Step #23

6.88

7.0

0.314

N/A

6.88

7.0

0.314

Moved from Step #23 to Step #22

6.88

7.0

0.314

N/A 22. While continuously holding guidewire, removes dilator
23. While continuously holding guidewire, inserts pigtail catheter (with straightening catheter in place) over the guidewire, stopping if any resistance is noticed

6.88

7.0

0.314

Moved from Step #23 to Step #24

Added subtext “Keeps inserting until the tip is inside the pleura, then advances only the pigtail and not the straightening catheter”

7.0

7.0

0

Modified text “straightening catheter” to “internal stiffener”

Modified subtext “inserting” to “advancing”

6.33

7.0

1.885

Moved from Step #24 to Step #23

7.0

7.0

0

N/A 23. While continuously holding guidewire, inserts pigtail catheter (with internal stiffener in place) over the guidewire, stopping if any resistance is noticed.
  • Keeps advancing until the tip is inside the pleura, then advances only the pigtail and not the internal stiffener

24. Removes guidewire and straightening catheter together while placing finger/thumb tip over exposed hub

6.875

7.0

0.330

Moved from Step #24 to Step #25

Modified text to “Removes the guidewire, and then, removes the straightening catheter”

Posed question to experts:

Should the text pertaining to “while placing finger/thumb tip over exposed hub” be kept or removed?”

7.0

7.0

0

Modified text “straightening catheter” to “internal stiffener”

7.0

7.0

0

Moved from Step #25 to Step #24

6.33

7.0

1.247

N/A 24. Removes the guidewire and then removes the internal stiffener

25. (Originally checklist item #26)

Attaches catheter tubing to chest drain tubing and secures tightly via twisting motion.
  • Attaches chest drain to suction or leaves it on water seal as desired

7.0

7.0

0

Moved from Step #26 to Step #27

7.0

7.0

0

Moved from Step #27 to Step #26

7.0

7.0

0

Moved from Step #26 to Step #25

Modified first subtext “as desired” to “as appropriate”

Added second subtext “Alternatively, attaches catheter tubing to a Heimlich valve”

7.0

7.0

0

N/A 25. Attaches catheter tubing to chest drain tubing and secures tightly via twisting motion.
  • Attaches chest drain to suction or leaves it on water seal as appropriate

  • Alternatively, attaches catheter tubing to a Heimlich valve

26. (Originally checklist item #27)

Secures chest tube in place using either a sterile suture or alternate device

6.77

7.0

0.628

Moved from Step #27 to Step #28

6.66

7.0

0.666

Moved from Step #28 to Step #27

7.0

7.0

0

Moved from Step #27 to Step #26

7.0

7.0

0

N/A 26. Secures chest tube in place using either a sterile suture or alternate device

27. (Originally checklist item #25)

Obtains a small amount of fluid for diagnostic workup if indicated, using the side/flushing port and a syringe (e.g., 60‐mL syringe)

6.44

7.0

0.684

Moved from Step #25 to Step #26

Modified text to “Obtains fluid for diagnostic workup if indicated, using the side/flushing port (if available) and a syringe”

Posed question to experts: “Should the above step take place as is, after the next step “Attaches catheter tubing to chest drain tubing and secures tightly via twisting motion,” OR after the following step: “Secures chest tube in place using either a sterile suture or alternate device?”

6.66

7.0

0.942

Moved from Step #26 to Step #28

Modified text to “Obtains fluid for diagnostic workup if indicated, using the side/flushing port and a syringe (e.g., 60‐mL syringe)”

7.0

7.0

0

Moved from Step #28 to Step #27

7.0

7.0

0

N/A 27. Obtains fluid for diagnostic workup if indicated, using the side/flushing port and a syringe (e.g., 60‐mL syringe)
28. Places a clear dressing over the catheter entry site

6.22

6.0

0.785

Moved from Step #28 to Step #29

Modified to “Places a dressing over the catheter entry site”

6.77

7.0

0.628

N/A

6.88

7.0

0.314

Moved from Step #29 to Step #28

Modified to “Places a dressing at the catheter entry site”

7.0

7.0

0

N/A 28. Places a dressing at the catheter entry site

28B. (Originally checklist item #29)

Disposes of sharps appropriately

6.88

7.0

0.314

Moved from Step #29 to Step #30

7.0

7.0

0

N/A

7.0

7.0

0

Merged into item #29 “Cleans up”

Merged into item #29 “Cleans up”

(Disposes of sharps appropriately)

29. (Originally checklist item #30)

Cleans up

6.22

7.0

1.872

Moved from Step #30 to Step #31

6.88

7.0

0.314

N/A

6.33

7.0

1.885

Moved from Step #31 to Step #29

Added subtext “Disposes of sharps appropriately”

7.0

7.0

0

N/A 29. Cleans up
  • Disposes of sharps appropriately

30. (Originally checklist item #31)

Writes procedure note in appropriate space

6.22

7.0

1.872

Moved from Step #31 to Step #32

7.0

7.0

0

Modified to “Writes procedure note”

7.0

7.0

0

Moved from Step #32 to Step #30

6.77

7.0 0.628

N/A 30. Writes procedure note

31. (Originally checklist item #32)

Orders a chest radiograph and interprets it

5.88

7.0

1.852

Moved from Step #32 to Step #33

Modified to “Confirms appropriate catheter positioning via chest imaging”

6.77

7.0

0.628

N/A

7.0

7.0

0

Moved from Step #33 to Step #31

6.77

7.0 0.628

N/A 31. Confirms appropriate catheter positioning via chest imaging