Effect of Different Supralottic Airway Devicess on Optic Nerve Sheath Diameter

The Effect of Supralottic Airway Devicess on Hemodynamic Response and Optic Nerve Sheath Diameter. PROSEAL LMA, SUPREMA LMA, I-JEL LMA

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05499754

Enrollment

Registered

2022-08-12

Start date

2019-07-01

Completion date

2020-07-30

Last updated

2022-08-12

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

Conditions

Intracranial Pressure Increase, Optic Nerve Sheath Diameter, Supraglottic Airway Device

Keywords

Supraglottic airway device, hemodynamic response, optic nerve sheath diameter

Brief summary

Direct laryngoscopy and tracheal intubation are associated with increases in intraocular pressure (IOP), intracranial pressure (ICP), heart rate (HR), and blood pressure. The use of supraglottic airway devices (SADs) are known to be beneficial in overcoming the disadvantages of laryngoscopy and tracheal intubation, especially ocular and pressure stress responses. In recent years, it has been reported that ultrasonographic measurement of optic nerve sheath diameter (ONSD) can be used in the diagnosis of increased ICP. The aim of our study is to compare the effects of Proseal laryngeal mask airway (pLMA), Suprem laryngeal mask airway (sLMA) and I-gel on hemodynamic response and ONSD during insertion in adult patients.

Interventions

OTHERpLMA: PROSEAL LARYNGEAL MASK, sLMA : SUPREMA LARYNGEAL MASK, I-jel =I-GEL

a SAD was inserted by all anaesthetists participating in the study had at least 3 years experience of airway management and were experienced with both the pLMA, sLMA and I-jel. Inadequate ventilation after two attempts was considered a failed placement, and these patients were excluded, while the practitioner was freed to use an alternative airway device.

Study design

Observational model

OTHER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 65 Years

Healthy volunteers

Yes

Inclusion criteria

* ASA physical status of I-II * elective surgery * non-ophthalmic procedures * 1-2 h duration * general anaesthesia * supine position

Exclusion criteria

* Mallampati and ASA status ≥III, * a history or suspect of difficult airway, * previous intracranial/ocular surgery, * cerebral edema/high intracranial pressure, * glaucoma, * uncontrolled hypertension -, diabetic retinopathy, * obstetric patients, * those who refused to participate in the study

Design outcomes

Primary

Measure	Time frame	Description
OPTIC NERVE SHEATH DIAMETER	10 min after using supraglottic airway devices	effects of different types of laryngeal masks onoptic nerve sheath diameter

Countries

Turkey (Türkiye)

Outcome results

None listed

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