19. Operations of the Head and Neck

19. Operations of the Head and Neck

It should be appreciated that the design of Tulip is based upon the principle of the air-tight oropharyngeal seal. This air, blood and secretion-tight seal allows the device to generate manual ventilating pressure and confidently protect the laryngeal inlet from descending blood and secretions with a blood and secretion-tight seal above the level of the cords but below the impending surgery. This then enables the Tulip to be used instead of Endotracheal intubation and throat packs as the glottic protection is afforded by the large balloon-cuff that generates an air, blood and secretion-tight seal above the level of the laryngeal inlet, keeping it safe from descending blood and secretions from the surgery that is occurring above the Tulip’s air-tight cuff.

Reinforced versions of the Tulip are recommended for such procedures to maintain safety of the airway when it cannot be seen, or when there is an excessive risk of tubal kinking or obstruction, such as the lateral and prone positions. Ventilating pressures must be minimized (<20cmH2O) to prevent gastric insufflation and dilation. Reflux and regurgitation must be monitored in such Patient positions.

Be careful not to allow the weight of the breathing circuit to twist or displace the light-weight Tulip when connected (see 7.14). Catheter and tube-mount connectors with a rotating “free-swivel” connection are recommended as a minimal amount of rotational traction is then applied by the breathing circuit and its connection to the light-weight Tulip.The Lego Batman Movie (2017)Roblox HackBigo Live Beans HackYUGIOH DUEL LINKS HACKPokemon Duel HackRoblox HackPixel Gun 3d HackGrowtopia HackClash Royale Hackmy cafe recipes stories hackMobile Legends HackMobile Strike Hack

In operations of this nature the Tulip airway must be secured before draping. It may also be considered that controlled ventilation is better avoided, if possible, because of the difficulty in monitoring. The Surgeon must also be aware as to the nature of the Tulip to minimize any likely hood of them puncturing the balloon cuff, pulling the Tulip out or kinking the airway tube and compromising the Patients airway management.

The Patients head may be turned to either side without compromise of the airway. It is recommended that the Tulip is introduced in the supine position, as normal, and inflated in the usual manner to +/- 60mls initially. It is recommended that the Tulip’s intra-cuff pressure is re-measured after repositioning the Patient and before draping. This is recommended to prevent increases of cuff pressure caused by the re-positioning and manipulation of the head and neck. The recommended optimal intra-cuff pressure is +/-40mmHg (54cmH2O) for normal ventilation pressures (+/-20cmH2O). However, in such procedures it may be wiser to ensure maximum Tulip performance for ventilation by elevating the intra-cuff volume and pressure and increasing ventilation seal integrity whilst maintaining cuff pressure monitoring and ensuring perfusion to the Tongue.

Should there be a leak against ventilation, the Tulip seal cannot be considered as competent against descending blood and secretions.

In the event of a gaseous leak around the Tulip cuff it must be remembered that any such secretions will be blown upward away from the laryngeal inlet by the pressurized leaking gas coming from below, around the edges of the cuff as the Tulip leaks audibly. Any such leak may be abolished by topping up the volume of gas within the Tulip’s balloon cuff until such time that there is no longer a leak against ventilating gas pressure when the Patient is manually bagged. This allows the cuff pressure to be set to the minimum inflation pressure for that position, Patient and ventilation pressure. These parameters will be individual to each Patient and intra-cuff pressures must be monitored.

Once the gaseous leak has been abolished, it is important to check cuff inflation pressures, initially using clinical expertise with the aid of a pinch between forefinger and thumb but then with a dedicated cuff pressure gauge to ensure that required pressures are not excessive. The Tulip has the lowest intra-cuff pressures when compared with other similar devices so a small elevation of intra-cuff volume and pressure to obliterate any leak will still most likely be within the normal limits of other similar devices.

If the Tulip leaks audibly, Patient ventilation will still most likely be possible despite any such leak. The Tulip will only leak at higher peak-pressures and ventilation below that peak pressure will still be possible to maintain ventilation.

Repositioning the Patients head may cause mechanical obstruction, as may be seen with extreme head flexion. Any movement may cause obstruction, and it is important to re-evaluate the airway every time the Patient is moved.

Any movement may be reduced by securing the Tulip adequately. It is considered necessary to secure the Tulip. Ties and adhesive tape may be used to reduce movement. This is considered mandatory, as the Tulip is a small-sized, light-weight airway device that is easily displaced by the attachment of heavier weights such as the anaesthetic breathing circuit. Rotation and twisting of the Tulip is possible by the rotational traction applied by laterally mounted breathing circuits. This must be monitored using the printed markings and centre-lines on the Tulip breathing tube.

Catheter and tube-mount connectors with a rotating “free-swivel” connection are recommended as a minimum amount of rotational traction is then applied by the breathing circuit and its connection to the light-weight Tulip.

Head and neck surgery is more likely to stimulate laryngeal reflexes and consequently the level of surgical anaesthesia needs to be deeper to avoid laryngeal spasm. In the case of thyroidectomy, the Patient may require neuromuscular paralysis to prevent the presence of almost continual laryngeal spasm.

In all cases of head and neck surgery, the Patient avoids the dangers of intubation and aspiration and all the complications of extubation including coughing and gagging excessively which may be detrimental to the surgery performed.