*7.3.10.2 Device description*

Parts of the Air-Q® Blocker™ ILA (**Figure 21**):


The Air-Q® Blocker™ airway outlet is keyhole-shaped. The anatomical shape facilitates ease of insertion. The soft blocker channel accepts naso-gastric tube to suction stomach contents. Alternatively, a blocker tube may be inserted through the blocker channel and helps to suction the pharynx or suction and block the upper oesophagus. The tethered colour coded connector avoids misplacements. In a known difficult or unexpectedly difficult intubation, it may be used as a conduit for intubation. The elevation ramp directs ETT midline and upward toward the laryngeal inlet. The Air-Q Removal Stylet helps easily remove the Air-Q® Blocker™ after intubation without ETT dislodgement.

that conventional PVC endotracheal tube can be passed through it without the use of conventional laryngoscope. It is useful in delivery of anaesthesia, resuscitation, critical care and difficult airway management in and out of hospital. It has a self-pressurising cuff which inflates to adequate pressure during positive pressure ventilation. This prevents airway trauma and morbidity associated with excessive cuff inflation [100].

The LMA® Gastro™ Airway with Cuff Pilot™ Technology (Teleflex®, USA) is the first SGA designed to enable active management of the airway while facilitating direct endoscopic access via the integrated endoscope channel. It is a soft, dispos-

Being anatomically shaped, it conforms to the patients's airway creating a better

Size selection is done on a weight basis (**Table 11**). It is available in three sizes. Moderate to deep sedation if often required for endoscopic procedures. This can lead to hypoxemia and warrants the need of rescue airway. LMA® Gastro™ can be successfully employed as a primary airway technique for such procedures [101].

> **Cuff inflation volume (ml)**

**Largest ETT ID (mm)**

**Internal cuff volume (ml)**

2.5 30–50 12 2–3 6.5 3.5 50–70 18 3–4 7.5 4.5 70–100 25 4–5 8.5

seal. Cuff Pilot™ Technology prevents cuff over inflation and reduces airway morbidity. The gastric channel provides as a conduit for passage of gastro-

*7.3.11 LMA gastro™ airway*

*7.3.11.2 Device description*

• Inflatable cuff

• Silicone airway tube

• Integrated bite block

• Cuff pilot

duodenoscope.

**Mask size**

**Table 10.**

**275**

*Available air-Q blocker LMAs.*

• Adjustable holder and strap

*7.3.11.3 Size selection, practical aspect*

**Patient ideal body weight(kg)**

able, anatomically shaped device made up of silicone.

*Second Generation Supraglottic Airway (SGA) Devices DOI: http://dx.doi.org/10.5772/intechopen.93947*

Parts of the LMA® Gastro™ Airway (**Figure 22**):

• Gastric drain tube or Endoscope channel

*7.3.11.1 Introduction*
