Self-Pressurized Airway Device with Blocker versus Proseal at Different Head and Neck Positions | ||||
| SVU-International Journal of Medical Sciences | ||||
| Volume 8, Issue 2, July 2025, Page 183-196 PDF (383.76 K) | ||||
| Document Type: Original research articles | ||||
| DOI: 10.21608/svuijm.2025.395967.2203 | ||||
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| Authors | ||||
Reham Ali Abdelhaleem Abdelrahman   1; Nesrine Abdelrahman El-Refai1; Fatma Elsayed Aboharga2; Shady Abo El ela1; Ahmed Kamal Mohamed Taha2
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| 1Department of Anesthesia, Surgical ICU and Pain Management, Faculty of Medicine, Cairo University, Kasr Al-Ainy, 11562, Cairo, Egypt. | ||||
| 2Department of Anesthesia, Surgical ICU and Pain Management, Faculty of Medicine, Tanta University, Tanta, Egypt. | ||||
| Abstract | ||||
| Background: Supraglottic airway devices (SADs) are commonly employed in anesthetic practice due to their ease of placement and ability to secure the airway effectively. Objectives: This study aimed to investigate the influence of various head and neck positions on ventilation parameters when using the Air-Q Self Pressurized Airway Device with Blocker (SP-Blocker) in comparison to the ProSeal Laryngeal Mask Airway (PLMA). Patients and methods: A total of 140 adult female patients (ASA I&II) were included in the final analysis and divided equally permitting 70 patients in each group and scheduled for elective gynecologic laparotomy under general anesthesia. Measurements were initially taken in the neutral head position, followed by flexion, extension, and rotation in a randomized order. The parameters examined were oropharyngeal leak pressure (OLP), peak inspiratory pressure (PIP), expiratory tidal volume (ETV), fiber-optic view score, and ventilation score. Results: In comparison with the neutral position, both devices showed increased OLP and PIP during flexion and reduced values during extension, with minimal differences observed in the rotated position. SP-Blocker demonstrated significantly higher OLP and PIP values than PLMA in both the neutral and flexed positions (p < 0.0001), but lower values in extension (p =0.0006). ETV and ventilation scores remained stable for both devices during flexion, although PLMA was superior in extension (p<0.0001). The SP-Blocker provided better fiber-optic visualization of the glottis in all head and neck positions (p < 0.0001), except during flexion, where visualization was reduced for both devices, with the PLMA showing poorer performance (p=0.0016). Conclusion: Both devices performed adequately during neck flexion; however, PLMA was more effective in maintaining ventilation during neck extension. | ||||
| Keywords | ||||
| Anesthesia; Supraglottic airway device; Head and neck position; Oropharyngeal leak pressure; Tidal volume; Glottis; Ventilation; Pneumoperitoneum | ||||
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