CClinicalTrials.gg
CompletedNCT02996591LMA vs SpinalUpdated Nov 12, 2019Results posted

Spinal Versus General Anesthesia With Popliteal and Adductor Canal Blocks for Ambulatory Foot and Ankle Surgery.

A Phase 4 interventional study of 25 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for popliteal nerve block and 10 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for adductor canal nerve block in Nerve Block, General Anesthesia and Spinal Anesthesia, sponsored by Hospital for Special Surgery, New York. Completed at 1 site in United States. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2019-11-12.

Sponsored by Hospital for Special Surgery, New York · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
36
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The purpose of this study is to determine if there is a difference in patient outcomes with general anesthesia versus spinal anesthesia when given in addition to popliteal and adductor canal nerve blocks for foot and ankle surgery. Popliteal and adductor canal nerve blocks are injections of local anesthetic agents near nerves in the back and front of the knee going to the foot and ankle that provide numbness during and after surgery. These peripheral nerve blocks offer good pain control and reduce the need for opioids (opioids are pain medications such as morphine, Dilaudid, and oxycodone). General anesthesia involves the flow of oxygen and anesthesia gas through a tube which, along with additional intravenous medications, causes unconsciousness and unawareness of sensations during surgery. Spinal anesthesia involves an injection of local anesthetic in the lower back, which causes numbness below the waist. In addition to spinal anesthesia, a sedative is typically given intravenously to cause relaxation and sleepiness throughout surgery.

General, spinal, and nerve block anesthesia are all routinely used for surgery at the Hospital for Special Surgery. General or spinal anesthesia is typically used in addition to peripheral nerve blocks during foot and ankle surgery to 1) allow the surgeons to use a thigh tourniquet to reduce bleeding, 2) provide anesthesia earlier, and 3) prevent unwanted movement. However, it is unclear whether general or spinal anesthesia provides better patient outcomes when given with peripheral nerve blocks. Some reports show that on its own, spinal anesthesia has advantages over general anesthesia in terms of side effects such as nausea and pain. However, these advantages may also be gained from combining peripheral nerve blocks with general anesthesia. Spinal anesthesia can be associated with headache and backache, although headache and backache can also happen after operations performed with general anesthesia. A previous study at the Hospital for Special Surgery showed low rates of nausea among patients who received nerve blocks with spinal anesthesia, and no nausea among patients who received a nerve block with general anesthesia. Therefore, the primary aim of this study is to determine if, as a treatment, either general or spinal anesthesia has advantages over the other treatment in terms of readiness for discharge, side effects, pain and patient satisfaction in an ambulatory foot and ankle population.

02

Conditions studied

  • Nerve Block
  • General Anesthesia
  • Spinal Anesthesia
  • Pain
  • Postoperative Nausea and Vomiting

Keywords

  • Nerve Block
  • General Anesthesia
  • Spinal Anesthesia
  • Pain
  • Postoperative Nausea and Vomiting
03

In context

Nausea

822 studies on the registry are indexed under Nausea; 104 are open to participants now.

This study's enrollment of 36 is below the median of 115 across 703 interventional studies indexed under Nausea.

Browse Nausea studies →

Lead sponsor

Hospital for Special Surgery, New York is the lead sponsor of 217 studies on the registry; 39 are open to participants now.

Of its 27 completed or terminated interventional studies of FDA-regulated products, 20 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • 18-75 aged patients
  • American Society of Anesthesiologists (ASA) Physical Status classification 1-3
  • Elective foot and ankle day surgery procedures, lasting between 1 and 3 hours as per surgeon, performed by 3 co-investigator surgeons.
  • Planned for combined popliteal and adductor canal block
  • No contraindications for spinal or LMA general anesthesia

Exclusion criteria

Exclusion Criteria:

  • Incapable of providing informed consent
  • Contraindications for regional or LMA anesthesia (anticoagulation, infection at injection site)
  • Anticipated difficult airway
  • BMI>40
  • Anticipated surgical procedure time less than 1 hour or more than 3 hours
  • Hx of severe postoperative nausea and vomiting
  • ASA >3
  • Peripheral neuropathy affecting the operative extremity
  • Pregnant or nursing women
  • Chronic opioid use (daily use of opioids one month prior to surgery/ patients requiring chronic pain interventions)
  • Prone position
  • Obstructive sleep apnea with planned admission overnight to the hospital
  • Known allergy/sensitivity to any study medications
  • Planned admission after surgery
  • Non-English speaking
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
36 participants (actual)

Study arms

  • Active comparator
    Spinal anesthesia with popliteal and adductor canal blocks.

    Ultrasound (US) guided sciatic nerve blocks in the popliteal fossa and adductor canal block with 25 mL and 10 mL, respectively, of 0.25% bupivacaine (plus 2 mg preservative-free (PF) dexamethasone / 30 ml), performed under procedural IV sedation protocol. IV sedation protocol: midazolam, 2-5 mg IV + Glycopyrrolate, 0.1 mg IV + Ketamine, 10-20 mg, + propofol as needed. Spinal protocol: 45-60 mg 1.5% mepivacaine, depending on the expected case duration (45 mg for cases with projected duration 1-2 hours, 60 mg for cases with projected duration 2-3 hours). Intraoperative sedation maintained with propofol infusion and ketamine, 10 mg/hr.

    Procedure: 25 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for popliteal nerve block · Procedure: 10 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for adductor canal nerve block · Drug: Midazolam, 2-5 mg IV + Glycopyrrolate, 0.1 mg IV + Ketamine, 10-20 mg + propofol as needed · Procedure: 45-60 mg of 1.5% mepivacaine for spinal anesthesia

  • Active comparator
    General anesthesia with popliteal and adductor canal blocks.

    Ultrasound (US) guided sciatic nerve blocks in the popliteal fossa and adductor canal block with 25 mL and 10 mL, respectively, of 0.25% bupivacaine (plus 2 mg preservative-free (PF) dexamethasone / 30 ml), performed under procedural IV sedation protocol. IV sedation protocol: midazolam, 2-5 mg IV + Glycopyrrolate, 0.1 mg IV + Ketamine, 10-20 mg, + propofol as needed. General anesthesia protocol: After induction with propofol and insertion of the LMA, anesthesia maintained with titrated propofol infusion, sevoflurane, ketamine 10 mg/hr.

    Procedure: 25 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for popliteal nerve block · Procedure: 10 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for adductor canal nerve block · Drug: Midazolam, 2-5 mg IV + Glycopyrrolate, 0.1 mg IV + Ketamine, 10-20 mg + propofol as needed · Procedure: LMA insertion + titrated propofol infusion + sevoflurane + ketamine 10 mg/hr for general anesthesia

Interventions

  • Procedure25 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for popliteal nerve block
  • Procedure10 mL of 0.25% bupivacaine plus 2 mg preservative-free (PF) dexamethasone / 30 ml for adductor canal nerve block
  • DrugMidazolam, 2-5 mg IV + Glycopyrrolate, 0.1 mg IV + Ketamine, 10-20 mg + propofol as needed
  • Procedure45-60 mg of 1.5% mepivacaine for spinal anesthesia
  • ProcedureLMA insertion + titrated propofol infusion + sevoflurane + ketamine 10 mg/hr for general anesthesia
06

What researchers measure

Primary outcomes

  1. Time Until Patient is Ready for Discharge From Post-Anesthesia Care Unit (PACU) to Home.

    Modified Aldrete Scoring System and Marshall and Chung Postanesthesia Discharge Scoring System, measured in time until discharge criteria is met (in minutes)

    Time frame: Duration of stay in recovery room after surgery

Secondary outcomes

  1. Numerical Rating Scale (NRS) Pain Scores at 1 Hour Postop

    NRS Pain scores at 1 hour after surgery. Rated on a scale of 0 (no pain) to 10 (worst pain imaginable).

    Time frame: 1 hour after PACU admission

  2. Numerical Rating Scale Pain Scores at 2 Hours Postop

    Numerical rating scale pain score as reported by the patient at 2 hours post-operatively. Rated on a scale of 0 (no pain) to 10 (worst pain imaginable).

    Time frame: 2 hours after PACU admission

  3. Numerical Rating Scale Pain Scores on Postoperative Day (POD) 1

    Numerical Rating Scale Pain from 0-10. 0 being no pain at all. 10 being the worst pain imaginable.

    Time frame: 24 hours after surgery

  4. Postoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)

    Leiden Perioperative Care Patient Satisfaction questionnaire (LPPSq) score. Performed at 1 hour postoperatively. To what degree did patients have the following symptoms. Rated 1-5, 1 being not at all. 5 being extremely.

    Time frame: 1 hour after surgery

  5. Postoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)

    Rating the Nausea/Vomiting of patients post-operatively.

    Time frame: 2 hours after surgery

  6. Postoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)

    Leiden Perioperative Care Patient Satisfaction questionnaire (LPPSq). From 1-5. 1 being not at all. 5 being extremely.

    Time frame: Postoperative day 1

  7. Incidence of Post-dural Puncture Headache

    Time frame: Postoperative day 1 and if present, monitored until resolution

  8. Incidence of Transient Neurologic Symptoms

    Time frame: Postoperative day 1 and if present, monitored until resolution

  9. Opioid Consumption

    Opioid consumption (mg OME) during inpatient stay

    Time frame: Duration of stay in recovery room after surgery (average 2 hours)

  10. Opioid Consumption Through First Postoperative Day. Measured in mg OME

    Time frame: Postoperative day 1

  11. Non-opioid Analgesic Consumption

    The number of patients who took non-opioid analgesic medication for post-operative pain between hospital discharge and postoperative day 1.

    Time frame: Hospital discharge to postoperative day 1

  12. Opioid-Related Symptom Distress Scale (ORSDS) Score

    Opioid-related symptom distress scale. The ORSDS measures patient opioid-related symptoms on a 4-point scale that evaluates 3 symptom distress dimension (severity, frequency, and bothersomeness) for 12 opioid-related symptoms. Scores range from 0-4, and the mean of the 12 answers is the ORSDS score. Higher values indicate worse opioid-related symptoms.

    Time frame: 2 hours after surgery

  13. Cognitive Recovery

    Postoperative Quality Recovery Scale Cognitive Domain questionnaire. Asked at 1 hour post-operatively. Either yes (return to pre-operative cognitive function levels) or no (not yet returned to pre-operative function levels)

    Time frame: 1 hour after surgery

  14. Incidence of Urinary Catheterization

    Time frame: Duration of stay in recovery room after surgery (average 2 hours)

  15. Anesthesia-related Postoperative Complications

    Measuring any anesthesia-related post-op complications that occured (yes or no)

    Time frame: Surgery start to postoperative day 1

  16. Assessment of Patient Blinding to Group Assignment

    Patients will be asked whether they believe they were in the general anesthesia or spinal anesthesia group. These responses are then validated using the Bang Blinding Index, which either confirms or refutes the validity of the blinding. The scale runs from -1 to 1, with a score of 0 indicating complete blinding, -1 indicating opposite guessing of groups, and 1 indicating a complete lack of blinding.

    Time frame: Postoperative day 1

  17. Patient Satisfaction

    Yes/no if patients would request the same anesthetic that they received

    Time frame: POD1

  18. Cognitive Recovery at 2 Hours Post-operative

    Postoperative Quality Recovery Scale Cognitive Domain questionnaire. Asked at 2 hour post-operatively. Either yes (return to pre-operative cognitive function levels) or no (not yet returned to pre-operative function levels)

    Time frame: 2 hours after PACU admission

  19. Cognitive Recovery on POD1

    Postoperative Quality Recovery Scale Cognitive Domain questionnaire. Asked on postoperative day 1. Either yes (return to pre-operative cognitive function levels) or no (not yet returned to pre-operative function levels)

    Time frame: Postoperative day 1

  20. Nausea Intensity

    Nausea intensity ranked on NRS score following PACU admission to 2 hours after discharge. Scored from 0-10. 0 Being no nausea, 10 being worst nausea imaginable.

    Time frame: 2 hours after PACU admission

  21. Back Pain on POD1

    Back pain (yes/no) on POD1

    Time frame: Postoperative day 1

07

Results

Posted Nov 12, 2019

Participant flow

Participant flow — Overall Study
MilestoneSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Started1818
Completed1818
Not completed00

Outcome measures

PrimaryTime Until Patient is Ready for Discharge From Post-Anesthesia Care Unit (PACU) to Home.

Modified Aldrete Scoring System and Marshall and Chung Postanesthesia Discharge Scoring System, measured in time until discharge criteria is met (in minutes)

Time frame:
Duration of stay in recovery room after surgery
Reported as:
Mean · Minutes
Time Until Patient is Ready for Discharge From Post-Anesthesia Care Unit (PACU) to Home.
MinutesSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Time Until Patient is Ready for Discharge From Post-Anesthesia Care Unit (PACU) to Home.81 (55 to 104)43.5 (38 to 71)
SecondaryNumerical Rating Scale (NRS) Pain Scores at 1 Hour Postop

NRS Pain scores at 1 hour after surgery. Rated on a scale of 0 (no pain) to 10 (worst pain imaginable).

Time frame:
1 hour after PACU admission
Reported as:
Mean · units on a scale
Numerical Rating Scale (NRS) Pain Scores at 1 Hour Postop
units on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Numerical Rating Scale (NRS) Pain Scores at 1 Hour Postop0 ± 01.8 ± 2.1
SecondaryNumerical Rating Scale Pain Scores at 2 Hours Postop

Numerical rating scale pain score as reported by the patient at 2 hours post-operatively. Rated on a scale of 0 (no pain) to 10 (worst pain imaginable).

Time frame:
2 hours after PACU admission
Reported as:
Mean · units on a scale
Numerical Rating Scale Pain Scores at 2 Hours Postop
units on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Numerical Rating Scale Pain Scores at 2 Hours Postop.4 ± 1.3.9 ± 1.6
SecondaryNumerical Rating Scale Pain Scores on Postoperative Day (POD) 1

Numerical Rating Scale Pain from 0-10. 0 being no pain at all. 10 being the worst pain imaginable.

Time frame:
24 hours after surgery
Reported as:
Mean · score on a scale
Numerical Rating Scale Pain Scores on Postoperative Day (POD) 1
score on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Numerical Rating Scale Pain Scores on Postoperative Day (POD) 11 ± 1.61 ± 1.7
SecondaryPostoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)

Leiden Perioperative Care Patient Satisfaction questionnaire (LPPSq) score. Performed at 1 hour postoperatively. To what degree did patients have the following symptoms. Rated 1-5, 1 being not at all. 5 being extremely.

Time frame:
1 hour after surgery
Reported as:
Mean · score on a scale
Postoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)
score on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Pain1.1 ± .51.6 ± .8
A Sore Throat1.2 ± .51.6 ± 1.1
Back Pain1.2 ± .51.2 ± .5
Vomiting1 ± 01 ± 0
Cold1.4 ± .81.3 ± .6
Hunger1.9 ± 1.21.7 ± .9
Thirst2.7 ± 1.22.5 ± 1.2
SecondaryPostoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)

Rating the Nausea/Vomiting of patients post-operatively.

Time frame:
2 hours after surgery
Reported as:
Mean · score on a scale
Postoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)
score on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Pain1.2 ± .51.4 ± .7
Sore Throat1.2 ± .41.6 ± 1.1
Back Pain1.1 ± .21.2 ± .5
Vomiting1 ± 01 ± 0
Cold1.1 ± .31.1 ± .2
Hunger1.4 ± .71.2 ± .5
Thirst2.1 ± 1.21.8 ± 1.2
SecondaryPostoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)

Leiden Perioperative Care Patient Satisfaction questionnaire (LPPSq). From 1-5. 1 being not at all. 5 being extremely.

Time frame:
Postoperative day 1
Reported as:
Mean · score on a scale
Postoperative Discomfort and Needs (Post-op Pain, Sore Throat, Back Pain, Nausea, Cold, Hunger, Thirst)
score on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Pain1.4 ± .71.5 ± .6
Sore Throat1.2 ± .41.5 ± .6
Back Pain1.1 ± .31.2 ± .6
Vomiting1 ± 01 ± 0
Cold1.3 ± .61 ± 0
Hunger1.4 ± .71.7 ± .7
Thirst2.3 ± 12.2 ± 1
SecondaryIncidence of Post-dural Puncture Headache
Time frame:
Postoperative day 1 and if present, monitored until resolution
Reported as:
Count of participants · Participants
Incidence of Post-dural Puncture Headache
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Yes43
No1414
SecondaryIncidence of Transient Neurologic Symptoms
Time frame:
Postoperative day 1 and if present, monitored until resolution
Reported as:
Count of participants · Participants
Incidence of Transient Neurologic Symptoms
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Normal1818
Transient Neurological Symptoms00
SecondaryOpioid Consumption

Opioid consumption (mg OME) during inpatient stay

Time frame:
Duration of stay in recovery room after surgery (average 2 hours)
Reported as:
Mean · mg OME
Opioid Consumption
mg OMESpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Opioid Consumption2.2 ± 7.35 ± 7
SecondaryOpioid Consumption Through First Postoperative Day. Measured in mg OME
Time frame:
Postoperative day 1
Reported as:
Mean · mg OME
Opioid Consumption Through First Postoperative Day. Measured in mg OME
mg OMESpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Opioid Consumption Through First Postoperative Day. Measured in mg OME8.3 ± 10.311 ± 12.3
SecondaryNon-opioid Analgesic Consumption

The number of patients who took non-opioid analgesic medication for post-operative pain between hospital discharge and postoperative day 1.

Time frame:
Hospital discharge to postoperative day 1
Reported as:
Count of participants · Participants
Non-opioid Analgesic Consumption
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
yes1212
No65
SecondaryOpioid-Related Symptom Distress Scale (ORSDS) Score

Opioid-related symptom distress scale. The ORSDS measures patient opioid-related symptoms on a 4-point scale that evaluates 3 symptom distress dimension (severity, frequency, and bothersomeness) for 12 opioid-related symptoms. Scores range from 0-4, and the mean of the 12 answers is the ORSDS score. Higher values indicate worse opioid-related symptoms.

Time frame:
2 hours after surgery
Reported as:
Mean · units on a scale
Opioid-Related Symptom Distress Scale (ORSDS) Score
units on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Opioid-Related Symptom Distress Scale (ORSDS) Score.3 ± .2.3 ± .3
SecondaryCognitive Recovery

Postoperative Quality Recovery Scale Cognitive Domain questionnaire. Asked at 1 hour post-operatively. Either yes (return to pre-operative cognitive function levels) or no (not yet returned to pre-operative function levels)

Time frame:
1 hour after surgery
Reported as:
Count of participants · Participants
Cognitive Recovery
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
No34
Yes1413
SecondaryIncidence of Urinary Catheterization
Time frame:
Duration of stay in recovery room after surgery (average 2 hours)
Reported as:
Count of participants · Participants
Incidence of Urinary Catheterization
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Yes00
No1818
SecondaryAnesthesia-related Postoperative Complications

Measuring any anesthesia-related post-op complications that occured (yes or no)

Time frame:
Surgery start to postoperative day 1
Reported as:
Count of participants · Participants
Anesthesia-related Postoperative Complications
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Yes00
No1818
SecondaryAssessment of Patient Blinding to Group Assignment

Patients will be asked whether they believe they were in the general anesthesia or spinal anesthesia group. These responses are then validated using the Bang Blinding Index, which either confirms or refutes the validity of the blinding. The scale runs from -1 to 1, with a score of 0 indicating complete blinding, -1 indicating opposite guessing of groups, and 1 indicating a complete lack of blinding.

Time frame:
Postoperative day 1
Reported as:
Number · Bang blinding index
Assessment of Patient Blinding to Group Assignment
Bang blinding indexSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Assessment of Patient Blinding to Group Assignment.588 (.313 to .864).722 (.47 to .974)
Statistical analysis
  • Spinal Anesthesia With Popliteal and Adductor Canal Blocks. vs General Anesthesia With Popliteal and Adductor Canal Blocks. · Regression, Logistic · p = .038 · Generalized estimating equations method: 45
  • Spinal Anesthesia With Popliteal and Adductor Canal Blocks. vs General Anesthesia With Popliteal and Adductor Canal Blocks. · Bang Blinding Index · p = <.00195% confidence interval
SecondaryPatient Satisfaction

Yes/no if patients would request the same anesthetic that they received

Time frame:
POD1
Reported as:
Count of participants · Participants
Patient Satisfaction
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Yes1817
No00
SecondaryCognitive Recovery at 2 Hours Post-operative

Postoperative Quality Recovery Scale Cognitive Domain questionnaire. Asked at 2 hour post-operatively. Either yes (return to pre-operative cognitive function levels) or no (not yet returned to pre-operative function levels)

Time frame:
2 hours after PACU admission
Reported as:
Count of participants · Participants
Cognitive Recovery at 2 Hours Post-operative
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
No14
Yes1613
SecondaryCognitive Recovery on POD1

Postoperative Quality Recovery Scale Cognitive Domain questionnaire. Asked on postoperative day 1. Either yes (return to pre-operative cognitive function levels) or no (not yet returned to pre-operative function levels)

Time frame:
Postoperative day 1
Reported as:
Count of participants · Participants
Cognitive Recovery on POD1
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
No32
Yes1415
SecondaryNausea Intensity

Nausea intensity ranked on NRS score following PACU admission to 2 hours after discharge. Scored from 0-10. 0 Being no nausea, 10 being worst nausea imaginable.

Time frame:
2 hours after PACU admission
Reported as:
Mean · score on a scale
Nausea Intensity
score on a scaleSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
Nausea Intensity0 (0 to 0)0 (0 to 0)
SecondaryBack Pain on POD1

Back pain (yes/no) on POD1

Time frame:
Postoperative day 1
Reported as:
Count of participants · Participants
Back Pain on POD1
ParticipantsSpinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.
No1614
Yes23

Adverse events

Collected over 24 hours postoperatively.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Spinal Anesthesia With Popliteal and Adductor Canal Blocks.0/18 (0%)0/18 (0%)0/18 (0%)
General Anesthesia With Popliteal and Adductor Canal Blocks.0/18 (0%)0/18 (0%)0/18 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Spinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.Total
<=18 years000
Between 18 and 65 years141832
>=65 years404
Age, Continuous
Age, Continuous(years)Spinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.Total
Mean55 ± 1347 ± 1151 ± 12
Sex: Female, Male
Sex: Female, Male(Participants)Spinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.Total
Female131326
Male5510
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Spinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.Total
Hispanic or Latino011
Not Hispanic or Latino161733
Unknown or Not Reported202
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Spinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.Total
American Indian or Alaska Native000
Asian011
Native Hawaiian or Other Pacific Islander000
Black or African American000
White171633
More than one race000
Unknown or Not Reported112
Region of Enrollment
Region of Enrollment(Participants)Spinal Anesthesia With Popliteal and Adductor Canal Blocks.General Anesthesia With Popliteal and Adductor Canal Blocks.Total
United States181836
08

Study locations

1 site
  • Hospital for Special Surgery, New York
    New York, New York 10021, United States
09

References and documents

Publications

  • YaDeau JT, Fields KG, Kahn RL, LaSala VR, Ellis SJ, Levine DS, Paroli L, Luu TH, Roberts MM. Readiness for Discharge After Foot and Ankle Surgery Using Peripheral Nerve Blocks: A Randomized Controlled Trial Comparing Spinal and General Anesthesia as Supplements to Nerve Blocks. Anesth Analg. 2018 Sep;127(3):759-766. doi: 10.1213/ANE.0000000000003456. PubMed 29847387 ↗

Study documents

  • Informed consent form · Dec 19, 2016
  • Protocol and statistical analysis plan · Jan 18, 2017

Documents are hosted by the registry — open the source record to download them.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 12, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02996591
Lead sponsor
Hospital for Special Surgery, New York
Responsible party
Sponsor
First posted
Dec 19, 2016
Start date
Jan 2017
Primary completion
May 2017
Completion
May 2017
Results posted
Nov 12, 2019
Last update
Nov 12, 2019

Study contacts

Jacques YaDeau, MD
principal investigator · Hospital for Special Surgery, New York
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2019. You cannot join it, but the record below documents what was studied.

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Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

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