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

February 2, 2026 updated by: Hans Bahlmann

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

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.

Study Overview

Detailed Description

Please refer to CTIS

Study Type

Interventional

Enrollment (Estimated)

220

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

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 informed consent after having received oral and writen information about the study

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 contraception 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 contraindications 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 (eGFR < 30), hepatic failure caused by acute hepatitis or cirrhosis (Child-Pugh B or higher, severe cardiac arrythmias or insuffiency (NYHA IIIb or higher)
  • The patient has previously participated in the trial

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: spinal analgesia
single shot spinal analgesia with 0.2-0.3 mg morphine and 10-20 mg bupivacaine before surgery
single shot spinal analgesia with 0.2-0.3 mg morphine and 10-20 mg bupivacaine before surgery
Other Names:
  • morphine spinal
Active Comparator: lidocaine infusion
intraoperative intravenous infusion of lidocaine at a rate of 2 mg/kg/t (Ideal Body Weight)
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)
Other Names:
  • xylocaine iv

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
QoR-15 score at postoperative day 1
Time Frame: First day after surgery
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.
First day after surgery

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
QoR-15 score preoperatively
Time Frame: Any time between inclusion and the night before surgery
Quality of Recovery-15 score ranges from 0 to 150 with 0 reflecting zero wellbeing and 150 reflecting perfect wellbeing.
Any time between inclusion and the night before surgery
QoR-15 score at postoperative day 7
Time Frame: Seventh day after surgery
Quality of Recovery-15 score ranges from 0 to 150 with 0 reflecting zero wellbeing and 150 reflecting perfect wellbeing.
Seventh day after surgery
Pain (NRS) on POD 1-3
Time Frame: First, second and third day after surgery
Numeric Rating Scale ranges from 0 to 10 with 0 reflecting absence of pain and 10 reflecting extreme pain.
First, second and third day after surgery
Pain (NRS) in rest and during motion at POD 7
Time Frame: Seventh day after surgery
Numeric Rating Scale ranges from 0 to 10 with 0 reflecting absence of pain and 10 reflecting extreme pain.
Seventh day after surgery
Amount of remifentanil in patients given remifentanil
Time Frame: Intraoperatively
Amount of remifentanil during anesthesia in patients given remifentanil expressed in mcg/kg/min as recorded on the anesthetic chart.
Intraoperatively
Amount of intraoperative opioids in patients not receiving remifentanil
Time Frame: Intraoperatively
Amount of intraoperative opioids in patients not receiving remifentanil expressed in mcg/kg/min morphine equivalents as recorded on the anesthetic chart.
Intraoperatively
Length of stay
Time Frame: From first until thirtieth day after surgery
Length of stay in calendary days
From first until thirtieth day after surgery
DAOH30
Time Frame: From first until thirtieth day after surgery
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
From first until thirtieth day after surgery
Requirement for opioids after discharge
Time Frame: From first until seventh day after surgery
Y/N, based on a telephone interview
From first until seventh day after surgery
Intraoperative fluid balance
Time Frame: Intraoperatively
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.
Intraoperatively
Intraoperative Cardiac Index
Time Frame: Intraoperative
Cardiac output corrected for Body Surface Area expressed in L/min/m2
Intraoperative
Intraoperative Stroke Volume Index
Time Frame: Intraoperative
Stroke volume corrected for Body Surface Area expressed in mL/m2
Intraoperative
Intraoperative Cardiac Power Index
Time Frame: Intraoperative
Cardiac Power Output corrected för Body Surface Area, expressed in Watt/m2, with higher values implying better cardiac performance.
Intraoperative
Intraoperative dPmx
Time Frame: Intraoperative
Maximum increase in arterial pressure during a cardiac cycle, expressed in mmHg/second, with higher values implying better cardiac contractility.
Intraoperative
Intraoperative Pulse Pressure Variation
Time Frame: Intraoperative
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
Intraoperative
Intraoperative Stroke Volume Variation
Time Frame: Intraoperative
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
Intraoperative
Intraoperative Systemic Vascular Resistance Index
Time Frame: Intraoperative
Intraoperative Systemic Vascular Resistance corrected for Body Surface Area
Intraoperative
Biochemical markers of inflammation
Time Frame: Day of surgery and first and third day after surgery.
To be specified later during the study (samples are stored for later analysis)
Day of surgery and first and third day after surgery.
Intraoperative dynamic arterial elastance
Time Frame: Intraoperative
Determined as Pulse Pressure Variation divided by Stroke Volume Variation
Intraoperative
Pain (NRS) in rest and during motion 2hrs after arrival to the PACU/ICU/HDU
Time Frame: 2 hrs after arrival to the PACU
Numeric Rating Scale ranges from 0 to 10 with 0 reflecting absence of pain and 10 reflecting extreme pain.
2 hrs after arrival to the PACU
Time from arrival in the OR to start of surgery
Time Frame: Time from entering the OR to first incision or start of endoscopy, whichever comes first, up to 4 hrs.
Time from entering the OR to first incision or start of endoscopy, whichever comes first, up to 4 hrs.
Time from entering the OR to first incision or start of endoscopy, whichever comes first, up to 4 hrs.
Time from end of surgery until leaving the OR
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
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 from end of surgery (removing of surgical drapes or finishing of endoscopy, whichever comes last) until leaving the OR, up to 4 hrs
Incidence of unplanned termination of the lidocaine infusion
Time Frame: Intraoperatively
Incidence of unplanned termination of the lidocaine infusion
Intraoperatively
Length of stay at the PACU/ICU/HDU
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
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
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
Amount of opioids administred at the PACU/ICU/HDU during the first 24 hrs after end of surgery
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
Amount of opioids administered at the PACU/ICU/HDU expressed in mcg/kg morphine equivalents as recorded on the post-anesthetic chart.
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
PONV requiring treatment at 0-6 hours and 6-24 hours postoperatively as well as during the whole postoperative stay
Time Frame: 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
At 0-6 hours and 6-24 hours postoperatively as well as during the whole postoperative stay
"Time out-of-bed" on POD 1-3
Time Frame: First, second and third day after surgery
"Time out-of-bed" on POD 1-3
First, second and third day after surgery
Amount of opioids administered during the first 24 hours at the PACU/ICU/HD and on the ward
Time Frame: During the first 24 hours at the PACU 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.
During the first 24 hours at the PACU and on the ward
First POD passing gases
Time Frame: From first until seventh day after surgery
First POD passing gases
From first until seventh day after surgery
First POD passing stool
Time Frame: From first until seventh day after surgery
First POD passing stool
From first until seventh day after surgery
Incidence of pruritus
Time Frame: From first until seventh day after surgery
Incidence of pruritus
From first until seventh day after surgery
Postoperative complications untill POD 30
Time Frame: From first until thirtieth day after surgery
Postoperative complications untill POD 30
From first until thirtieth day after surgery
Incidence of respiratory depression leading to the use of a mu-antagonist within 48 hours of induction of anesthesia
Time Frame: From induction of anesthesia until 48 hours after induction of anesthesia
Incidence of respiratory depression leading to the use of a mu-antagonist within 48 hours
From induction of anesthesia until 48 hours after induction of anesthesia
Time with low blood pressure during anesthesia
Time Frame: Intraoperatively
Time with low blood pressure during anesthesia
Intraoperatively
Lowest MAP within 10 minutes after induction of anesthesia
Time Frame: Within 10 minutes after induction of anesthesia
Lowest MAP within 10 minutes after induction of anesthesia
Within 10 minutes after induction of anesthesia
Highest MAP within 10 minutes of start of abdominal insufflation
Time Frame: Within 10 minutes of abdominal insufflation
Highest MAP within 10 minutes of start of abdominal insufflation
Within 10 minutes 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
Fraction of patients needing norepinephrine within 15 minutes after start of abdominal insufflation
From anesthesia induction until 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)
Fraction of patients needing norepinephrine intraoperatively (later than 15 minutes after start of abdominal insufflation)
Intraoperatively (later than 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
Average infusion rate of norepinephrine, in patients receiving norepinephrine, before 15 minutes after start of abdominal insufflation
From anesthesia induction until 15 minutes after start of abdominal insufflation until end of anesthesiaon, up to 48 hours
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
Average infusion rate of norepinephrine, in patients receiving norepinephrine, after 15 minutes after start of abdominal insufflation
From 15 minutes after start of abdominal insufflation until end of anesthesia (extubation), up to 48 hrs
Intraoperative heart rate
Time Frame: Intraoperative
Intraoperative heart rate
Intraoperative

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Collaborators

Investigators

  • Principal Investigator: Martin Holmberg, University Hospital, Linkoeping

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 9, 2024

Primary Completion (Estimated)

October 1, 2027

Study Completion (Estimated)

December 31, 2027

Study Registration Dates

First Submitted

March 24, 2024

First Submitted That Met QC Criteria

March 29, 2024

First Posted (Actual)

April 5, 2024

Study Record Updates

Last Update Posted (Actual)

February 5, 2026

Last Update Submitted That Met QC Criteria

February 2, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Data will be made available on reasonable request

IPD Sharing Time Frame

Within 2 months of publication of the data involved

IPD Sharing Access Criteria

reasonable request

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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