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

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

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06676865
Enrollment
150
Registered
2024-11-06
Start date
2023-12-01
Completion date
2024-07-31
Last updated
2024-11-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetes, Difficult Laryngoscopy, Preoperative Period

Brief 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.

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.

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.

Sponsors

Mongi Slim Hospital
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

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

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)

Design outcomes

Primary

MeasureTime frameDescription
Difficult laryngoscopyafter induction of anesthesia and during laryngoscopyCormack and Lehane graded I to IV. Grades III or IV showed difficult laryngoscopy.

Secondary

MeasureTime frameDescription
Difficult intubationat induction of anesthesiaNeed of more than 2 laryngoscopies to intubate the patient

Countries

Tunisia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026