ClinicalTrials.gg
RecruitingNCT06349668SMILeUpdated Feb 5, 2026

Spinal Morphine or Intravenous Lidocaine in Robot-assisted Upper Urologic Surgery

A Phase 3 interventional study of spinal analgesia with morphine and bupivacaine and lidocaine infusion in Other Specified Disorders of Kidney and Ureter, Benign Neoplasm of Ureter and Calculus of Kidney and Ureter, sponsored by Hans Bahlmann. Recruiting at 3 sites in Sweden. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-02-05.

Sponsored by Hans Bahlmann · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Started Apr 2024; still recruiting 2 years 7 months later.
Phase
Phase 3
Study type
Interventional
Enrollment
220
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to learn whether the addition of spinal analgesia leads to superior recovery in patients undergoing robotic-assisted laparoscopic upper urinary tract surgery under general anesthesia. The main questions it aims to answer are:

  • Is the decrease in wellbeing as quantified by the patient-centered outcome scale "Quality of Recovery 15" (QoR-15), from baseline to the first day after surgery (POD 1), at least 8.0 points less in patients receiving spinal analgesia in addition to general anesthesia?
  • Does spinal analgesia result in improved recovery as quantified by QoR-15 at POD 7, the incidence of postoperative pain at rest and at mobilization, nausea and vomiting, the need for opioid analgesics, time out-of-bed, length of stay and the incidence of complications?
  • Does spinal analgesia increase workload in the OR, as quantified by time from arrival in the OR to start of surgery?
  • Does spinal analgesia result in an increased incidence of hypotension and cardiac dysfunction during surgery, as well as an increased incidence of pruritus after surgery?

Participants will be randomized to receive either spinal analgesia with bupivacaine and morphine preoperatively or an intravenous infusion with lidocaine intraoperatively.

QoR-15 and other markers of recovery will be registered using structured interviews preoperatively, at POD1 and POD7. In addition, patients will record pain at rest and at mobilization three times daily in a diary.

In a subgroup of patients advanced hemodynamic parameters will be recorded using pulse-contour analysis before, during and after surgery. Blood samples will also be collected in these patients at fixed intervals and analyzed for amongst others inflammation and cardiac dysfunction.

Read the detailed description

Please refer to CTIS

02

Conditions studied

  • Other Specified Disorders of Kidney and Ureter
  • Benign Neoplasm of Ureter
  • Calculus of Kidney and Ureter
  • Ureter Cancer
  • Ureteric Reflux
  • Congenital Ureteric Anomaly
  • Benign Renal Neoplasm
  • Renal Cancer
03

In context

Nephrolithiasis

324 studies on the registry are indexed under Nephrolithiasis; 90 are open to participants now.

This study's planned enrollment of 220 is above the median of 92 across 257 interventional studies indexed under Nephrolithiasis.

Browse Nephrolithiasis studies →

Lead sponsor

This is the only study on the registry with Hans Bahlmann as lead sponsor.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • The patient is scheduled for elective robotic-assisted upper urinary tract surgery at one of the participating hospitals
  • The patient gives oral and written after having received oral and writen information about the study

Exclusion criteria

Exclusion Criteria:

  • The patient has a ASA-class of IV or above
  • The patient is a minor or declared incompetent, has severe psychiatric disease or is expected not to be able to understand the study information due to severe restrictions in vision, hearing, cognition, reading or Swedish language abilities
  • The patient is a female who is pregnant or breastfeeding
  • The patient is a pre-menopausal female who has not undergone sterilisation, hysterectomy, bilateral salpingectomy and/or bilateral oophorectomy, and is not using highly-effective with low user-dependency and cannot provide a negative pregnancy test
  • The patient is scheduled for emergency surgery
  • Research staff not available
  • Scheduled significant simultaneous surgery on another organ
  • The anesthesiologist in charge has planned spinal or epidural analgesia
  • The patient has clear to spinal analgesia, e.g. severe coagulopathy, severe aortic stenosis, previous back surgery with rods, or spinal analgesia can be expected to be technically challenging (severe obesity, severe scoliosis)
  • The patient has clear contraindications to lidocaine infusion, e.g. proven allergy to local anesthetics, myasthenia gravis, renail failure ( \< 30), hepatic failure caused by acute hepatitis or cirrhosis ( B or higher, severe cardiac arrythmias or insuffiency ( IIIb or higher)
  • The patient has previously participated in the trial
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Child-Pugh class

A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
220 participants (estimated)

Study arms

  • Experimental
    spinal analgesia

    single shot spinal analgesia with 0.2-0.3 mg morphine and 10-20 mg bupivacaine before surgery

    Drug: spinal analgesia with morphine and bupivacaine

  • Active comparator
    lidocaine infusion

    intraoperative intravenous infusion of lidocaine at a rate of 2 mg/kg/t (Ideal Body Weight)

    Drug: lidocaine infusion

Interventions

  • Drugspinal analgesia with morphine and bupivacaine

    single shot spinal analgesia with 0.2-0.3 mg morphine and 10-20 mg bupivacaine before surgery

    Also known as: morphine spinal

  • intraoperative intravenous infusion of lidocaine at a rate of 2 mg/kg/t after a bolus of 2 mg/kg (Ideal Body Weight if BMI \> 22, otherwise ABW)

    Also known as: xylocaine iv

06

What researchers measure

Primary outcomes

  1. QoR-15 score at postoperative day 1

    Quality of Recovery-15 score ranges from 0 to 150 with 0 reflecting zero wellbeing and 150 reflecting perfect wellbeing. The primary research hypothesis is that the reduction in QoR-15 from baseline before surgery to the first postoperative day (POD 1) is at least 8.0 points less in the morphine spinal group compared to the control group treated with intravenous lidocaine.

    Time frame: First day after surgery

Secondary outcomes

  1. QoR-15 score preoperatively

    Quality of Recovery-15 score ranges from 0 to 150 with 0 reflecting zero wellbeing and 150 reflecting perfect wellbeing.

    Time frame: Any time between inclusion and the night before surgery

  2. QoR-15 score at postoperative day 7

    Quality of Recovery-15 score ranges from 0 to 150 with 0 reflecting zero wellbeing and 150 reflecting perfect wellbeing.

    Time frame: Seventh day after surgery

  3. Pain (NRS) in rest and during motion 2hrs after arrival to the PACU/ICU/HDU

    Numeric Rating Scale ranges from 0 to 10 with 0 reflecting absence of pain and 10 reflecting extreme pain.

    Time frame: 2 hrs after arrival to the PACU

  4. Pain (NRS) on POD 1-3

    Numeric Rating Scale ranges from 0 to 10 with 0 reflecting absence of pain and 10 reflecting extreme pain.

    Time frame: First, second and third day after surgery

  5. Pain (NRS) in rest and during motion at POD 7

    Numeric Rating Scale ranges from 0 to 10 with 0 reflecting absence of pain and 10 reflecting extreme pain.

    Time frame: Seventh day after surgery

  6. Time from arrival in the OR to start of surgery

    Time from entering the OR to first incision or start of endoscopy, whichever comes first, up to 4 hrs.

    Time frame: Time from entering the OR to first incision or start of endoscopy, whichever comes first, up to 4 hrs.

  7. Time from end of surgery until leaving the OR

    Time from end of surgery (removing of surgical drapes or finishing of endoscopy, whichever comes last) until leaving the OR, up to 4 hrs

    Time frame: Time from end of surgery (removing of surgical drapes or finishing of endoscopy, whichever comes last) until leaving the OR, up to 4 hrs

  8. Incidence of unplanned termination of the lidocaine infusion

    Incidence of unplanned termination of the lidocaine infusion

    Time frame: Intraoperatively

  9. Amount of remifentanil in patients given remifentanil

    Amount of remifentanil during anesthesia in patients given remifentanil expressed in mcg/kg/min as recorded on the anesthetic chart.

    Time frame: Intraoperatively

  10. Amount of intraoperative opioids in patients not receiving remifentanil

    Amount of intraoperative opioids in patients not receiving remifentanil expressed in mcg/kg/min morphine equivalents as recorded on the anesthetic chart.

    Time frame: Intraoperatively

  11. Length of stay at the PACU/ICU/HDU

    Length of stay at the PACU/ICU/HDU (from first to final recording of any vital sign by the electronic patient data management system), up to 30 days

    Time frame: Length of stay at the PACU (from first to final recording of any vital sign by the electronic patient data management system), up to 30 days

  12. Amount of opioids administred at the PACU/ICU/HDU during the first 24 hrs after end of surgery

    Amount of opioids administered at the PACU/ICU/HDU expressed in mcg/kg morphine equivalents as recorded on the post-anesthetic chart.

    Time frame: During stay at the PACU (from first to final recording of any vital sign by the electronic patient data management system), up to 30 days

  13. PONV requiring treatment at 0-6 hours and 6-24 hours postoperatively as well as during the whole postoperative stay

    PONV requiring treatment at 0-6 hours and 6-24 hours

    Time frame: At 0-6 hours and 6-24 hours postoperatively as well as during the whole postoperative stay

  14. "Time out-of-bed" on POD 1-3

    "Time out-of-bed" on POD 1-3

    Time frame: First, second and third day after surgery

  15. Amount of opioids administered during the first 24 hours at the PACU/ICU/HD and on the ward

    Amount of opioids expressed in mcg/kg morphine equivalents administered during the first 24 hours at the PACU/ICU/HD and on the ward as recorded on the ward chart.

    Time frame: During the first 24 hours at the PACU and on the ward

  16. First POD passing gases

    First POD passing gases

    Time frame: From first until seventh day after surgery

  17. First POD passing stool

    First POD passing stool

    Time frame: From first until seventh day after surgery

  18. Incidence of pruritus

    Incidence of pruritus

    Time frame: From first until seventh day after surgery

  19. Length of stay

    Length of stay in calendary days

    Time frame: From first until thirtieth day after surgery

  20. DAOH30

    Days Alive and Out of Hospital defined as the number of full calendary days where the patient is not admitted to a hospital and not deceased

    Time frame: From first until thirtieth day after surgery

  21. Postoperative complications untill POD 30

    Postoperative complications untill POD 30

    Time frame: From first until thirtieth day after surgery

  22. Requirement for opioids after discharge

    Y/N, based on a telephone interview

    Time frame: From first until seventh day after surgery

  23. Incidence of respiratory depression leading to the use of a mu-antagonist within 48 hours of induction of anesthesia

    Incidence of respiratory depression leading to the use of a mu-antagonist within 48 hours

    Time frame: From induction of anesthesia until 48 hours after induction of anesthesia

  24. Intraoperative fluid balance

    Intraoperative fluid balance as recorded on the CRF in ml, defined by the estimated sum of administered fluids minus estimated bleeding, diuresis and other measurable losses.

    Time frame: Intraoperatively

  25. Time with low blood pressure during anesthesia

    Time with low blood pressure during anesthesia

    Time frame: Intraoperatively

  26. Lowest MAP within 10 minutes after induction of anesthesia

    Lowest MAP within 10 minutes after induction of anesthesia

    Time frame: Within 10 minutes after induction of anesthesia

  27. Highest MAP within 10 minutes of start of abdominal insufflation

    Highest MAP within 10 minutes of start of abdominal insufflation

    Time frame: Within 10 minutes of abdominal insufflation

  28. Fraction of patients needing norepinephrine within 15 minutes after start of abdominal insufflation

    Fraction of patients needing norepinephrine within 15 minutes after start of abdominal insufflation

    Time frame: From anesthesia induction until 15 minutes after start of abdominal insufflation

  29. Fraction of patients needing norepinephrine intraoperatively (later than 15 minutes after start of abdominal insufflation)

    Fraction of patients needing norepinephrine intraoperatively (later than 15 minutes after start of abdominal insufflation)

    Time frame: Intraoperatively (later than 15 minutes after start of abdominal insufflation)

  30. Average infusion rate of norepinephrine, in patients receiving norepinephrine, before 15 minutes after start of abdominal insufflation

    Average infusion rate of norepinephrine, in patients receiving norepinephrine, before 15 minutes after start of abdominal insufflation

    Time frame: From anesthesia induction until 15 minutes after start of abdominal insufflation until end of anesthesiaon, up to 48 hours

  31. Average infusion rate of norepinephrine, in patients receiving norepinephrine, after 15 minutes after start of abdominal insufflation

    Average infusion rate of norepinephrine, in patients receiving norepinephrine, after 15 minutes after start of abdominal insufflation

    Time frame: From 15 minutes after start of abdominal insufflation until end of anesthesia (extubation), up to 48 hrs

  32. Intraoperative Cardiac Index

    Cardiac output corrected for Body Surface Area expressed in L/min/m2

    Time frame: Intraoperative

  33. Intraoperative Stroke Volume Index

    Stroke volume corrected for Body Surface Area expressed in mL/m2

    Time frame: Intraoperative

  34. Intraoperative Cardiac Power Index

    Cardiac Power Output corrected för Body Surface Area, expressed in Watt/m2, with higher values implying better cardiac performance.

    Time frame: Intraoperative

  35. Intraoperative dPmx

    Maximum increase in arterial pressure during a cardiac cycle, expressed in mmHg/second, with higher values implying better cardiac contractility.

    Time frame: Intraoperative

  36. Intraoperative Pulse Pressure Variation

    Determined as the ratio of the difference between the maximal and minimal values of pulse pressure over the mean of these two values and expressed as a percentage

    Time frame: Intraoperative

  37. Intraoperative Stroke Volume Variation

    Determined as the ratio of the difference between the maximal and minimal values of stroke volume over the mean of these two values and expressed as a percentage

    Time frame: Intraoperative

  38. Intraoperative dynamic arterial elastance

    Determined as Pulse Pressure Variation divided by Stroke Volume Variation

    Time frame: Intraoperative

  39. Intraoperative Systemic Vascular Resistance Index

    Intraoperative Systemic Vascular Resistance corrected for Body Surface Area

    Time frame: Intraoperative

  40. Intraoperative heart rate

    Intraoperative heart rate

    Time frame: Intraoperative

  41. Biochemical markers of inflammation

    To be specified later during the study (samples are stored for later analysis)

    Time frame: Day of surgery and first and third day after surgery.

07

Study locations

2 of 3 sites recruiting
08

References and documents

Publications

  • Holmberg M, Chew M, Nilsson L, Skoglund P, Bahlmann H. Rationale and design of the SMILe (Spinal Morphine or Intravenous Lidocaine) study: protocol for a multicentre randomised clinical trial in southern Sweden on whether spinal morphine improves postoperative recovery compared to intravenous lidocaine in patients undergoing robot-assisted upper urinary tract surgery. BMJ Open. 2026 May 6;16(5):e113402. doi: 10.1136/bmjopen-2025-113402. PubMed 42091145 ↗

Individual participant data

Plan to share: Yes — Data will be made available on reasonable request

Supporting information: Study protocol, Statistical analysis plan, Clinical study report

Time frame: Within 2 months of publication of the data involved

Access criteria: reasonable request

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Apr 2024 (actual). Primary completion is estimated for Oct 2027, 41 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 24, 2024
First posted
Apr 5, 2024
StartActual
Apr 9, 2024
Primary completionEst.
Oct 1, 2027
CompletionEst.
Dec 31, 2027
Last update
Feb 5, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 5, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06349668
Lead sponsor
Hans Bahlmann
Responsible party
Hans Bahlmann (Senior Consultant. Sponsor, University Hospital, Linkoeping) — Sponsor-investigator
First posted
Apr 5, 2024
Start date
Apr 9, 2024
Primary completion
Oct 1, 2027 (estimated)
Completion
Dec 31, 2027 (estimated)
Last update
Feb 5, 2026

Study contacts

Hans Bahlmann, MD PhD
Contact
hans.bahlmann@regionostergotland.se
+46739312281
Martin Holmberg, MD
Contact
martin.holmberg@regionostergotland.se
+46101033932
Martin Holmberg
principal investigator · University Hospital, Linkoeping

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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