Ultrasonographical Assessment of Airway Indices in Pregnancy
ConditionAirway Assessment
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexFemale
Age18-50
SponsorSouth Valley University
About this trial
Clinical and ultrasound indices of airway, in addition to laryngoscopic view will be assessed and compared among three groups of patients: non pregnant, pregnant with normal blood pressure, preeclampsia patients undergoing various surgeries under general anesthesia.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
-normotensive pregnant
pre-eclamptic patients.
nonpregnant females in child bearing period .
Disqualifiers
Patients excluded were women at <32 weeks' gestation or with Eclampsia .
height <150 cm, body mass index (BMI) >30 kg/m2 .
predicted airwy difficulty due to any other cause as neck swelling , facial deformity and prominent teeth.
Trial population
non pregnant, normotensive pregnant and preeclamptic patients who are undergoing general anesthesia, and also apply to the inclusion criteria and have non of the exclusion criteria mentioned above.
Trial design
Design model
Cohort
Time perspective
Cross-sectional
Treatments tested in this trial
Not listed
Trial groups
180 Participants
are grouped into 3 trial groupsGroup A: Non Pregnant
Group B: pregnant normotensive
Group C: preeclampsia
Trial outcomes
Primary outcomes
1
Sperficial ultrasonographic airway assessemt
By using superficial ultrasound probe, we measure in millimeters: anterior neck skin to hyoid bone distance, anterior neck skin to vocal cord distance (ANS-VC) ,distance from the epiglottis to the midpoint of the distance between the vocal cords (E-VC),the depth of pre-epiglottic space (Pre-E) and Pre-E/E-VC ratio). All parameters will be measured in millimeters in all groups by the same doctor, and the same ultrasound device.
Time frame
preoperative just before induction of anesthesiaSecondary outcomes
1
Assessment of laryngoscopic view
In all groups, we assess laryngoscopic view of airway using Cormack-Lehane classification system. Grade 1: Full view of the glottis (entire vocal cords and anterior commissure visible); intubation is straightforward. Grade 2: Partial glottic view; subdivided into 2a (posterior vocal cords visible) and 2b (only arytenoids seen); intubation often possible with manipulation. Grade 3: Only epiglottis visible, no glottis; intubation typically requires advanced techniques. Grade 4: Epiglottis not visible; predicts failed intubation, needing alternatives.
Time frame
preoperative just before endotracheal intubation2
Tongue thickness
By using deep ultrasound probe, we measure tongue thickness
Time frame
Once just before induction of general anesthesia3
Hyoid bone visibility
By using deep ultrasound probe, we measure hyoid bone visibility(HBV)
Time frame
Preoperative just before induction of anesthesiaSponsors and contacts
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Source ClinicalTrials.gov