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CompletedNCT06676865Updated Nov 6, 2024

Preoperative Prediction of Difficult Laryngoscopy in Diabetic Patients: Importance of the Palm Print Test

An observational study in Difficult Laryngoscopy, Diabetes and Preoperative Period, sponsored by Mongi Slim Hospital. Completed at 1 site in Tunisia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-11-06.

Sponsored by Mongi Slim Hospital · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
150
Ages
18 Years and older
Sex
All
01

Study summary

The investigators assessed upper airway management at the pre-anaesthetic consultation using the usual clinical criteria. On the day before surgery, diabetic patients were assessed for the palm print sign to predict difficult laryngoscopy. After induction of anesthesia, laryngoscopy was performed with a Macintosh metal laryngoscope blade. At this stage of the study, patients were categorized into two groups: difficult and easy laryngoscopy.

Read the detailed description

During pre-anesthesia consultation, all participants were assessed for airway conditions using usual clinical tests (Mallampati classification, Thyromental distance, mouth-opening test, upper lip biting test (ULBT), Head extension and Prayer sign). Demographic characteristics, diabetes duration, Blood glucose regulation and diabetes-related complications were also recorded.

On the day before surgery, patients were assessed for the palm print sign during preoperative evaluation rounds. On the day of surgery, after an intravenous line (IV) and complete monitoring, induction of anesthesia was initiated, and a muscle relaxant was used to facilitate intubation. Laryngoscopy was performed with a Macintosh metal laryngoscope blade by an anesthesiologist who had more than 2 years of intubation experience. McGrath® videolaryngoscope, McCoy laryngoscope, LMA Fastrack®, or i-gel® airway were kept ready for emergency situations. At this stage of the study, patients were categorized into two groups: difficult and easy laryngoscopy.

02

Conditions studied

  • Difficult Laryngoscopy
  • Diabetes
  • Preoperative Period

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03

In context

Diabetes Mellitus

8,290 studies on the registry are indexed under Diabetes Mellitus; 1,077 are open to participants now.

This study's enrollment of 150 is below the median of 246 across 1,936 observational studies indexed under Diabetes Mellitus.

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Lead sponsor

Mongi Slim Hospital is the lead sponsor of 38 studies on the registry; 5 are open to participants now.

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
Sampling method
Non-probability sample

Study population

Were included adult patients with diabetes mellitus undergoing surgery under general anesthésia with intubation.

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

  • diabetes mellitus
  • aged more than 18 years
  • undergoing surgery under general anesthesia with endotracheal intubation.

Exclusion criteria

Exclusion Criteria:

  • physical or intellectual disabilities preventing cooperation
  • Malformations, trauma, tumors, or infections of the maxillofacial region and upper airways,
  • a history of burns or cervicofacial irradiation
  • neurosurgical conditions causing temporomandibular pseudoankylosis.
  • hand joint stiffness (e.g., carpal tunnel syndrome, Dupuytren's disease, scleroderma, rheumatoid arthritis)
  • restricted cervical mobility (due to osteoarthritis, ankylosing spondylitis, or cervical trauma),
  • a history of difficult intubation
  • pregnancy (including up to six weeks postpartum)
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
150 participants (actual)
Patient registry
No

Groups and cohorts

  • adult Diabetic patients scheduled for surgery under general anesthesia.

    Were included patients with known cases of diabetes mellitus, aged more than 18 years, undergoing surgery under general anesthesia with endotracheal intubation. This study excluded patients with physical or intellectual disabilities preventing cooperation, Malformations, trauma, tumors, or infections of the maxillofacial region and upper airways, a history of burns or cervicofacial irradiation, and neurosurgical conditions causing temporomandibular pseudoankylosis. Additional exclusions included patients with conditions causing hand joint stiffness (e.g., carpal tunnel syndrome, Dupuytren's disease, scleroderma, rheumatoid arthritis), restricted cervical mobility (due to osteoarthritis, ankylosing spondylitis, or cervical trauma), a history of difficult intubation as well as pregnancy (including up to six weeks postpartum)

    Diagnostic Test: the palm print test

Interventions

  • Diagnostic testthe palm print test

    The patient's dominant hand was pressed firmly against a blue ink pad, then onto a white sheet of paper without applying body weight. The palm prints were scored as follows: * Grade 0: All phalangeal areas visible * Grade 1: Deficiency in the interphalangeal areas of the 4th and 5th digits * Grade 2: Deficiency in the interphalangeal areas of the 2nd to 5th digits * Grade 3: Only the tips of the digits visible The palm print test was scored from 0 to 3. Grades 2 and 3 were considered indicators of difficult intubation.

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What researchers measure

Primary outcomes

  1. Difficult laryngoscopy

    Cormack and Lehane graded I to IV. Grades III or IV showed difficult laryngoscopy.

    Time frame: after induction of anesthesia and during laryngoscopy

Secondary outcomes

  1. Difficult intubation

    Need of more than 2 laryngoscopies to intubate the patient

    Time frame: at induction of anesthesia

07

Study locations

1 site
  • Mongi Slim University Hospital
    Tunis, 2046, Tunisia
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Dec 2023 to primary completion in May 2024, 5 months.

Of 533 non-industry observational studies under Diabetes Mellitus, half reached primary completion within 42 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 175. This study's 5 months is below that.

Counting every sponsor, half of 642 studies reached it within 36 months; a quarter within 14 and three quarters within 122.

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

Registered
Oct 22, 2024
First posted
Nov 6, 2024
StartActual
Dec 1, 2023
Primary completionActual
May 31, 2024
CompletionActual
Jul 31, 2024
Last update
Nov 6, 2024
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 Nov 6, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06676865
Lead sponsor
Mongi Slim Hospital
Responsible party
Mhamed Sami Mebazaa (Clinical Professor, Mongi Slim Hospital) — Principal investigator
First posted
Nov 6, 2024
Start date
Dec 1, 2023
Primary completion
May 31, 2024
Completion
Jul 31, 2024
Last update
Nov 6, 2024

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Oct 2024. You cannot join it, but the record below documents what was studied.

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