Benefits of Exchanging a Double Lumen Tube to a Proseal Laryngeal Mask or a Single Lumen Tube After a Thoracic Surgery

Benefits of Exchanging a Double Lumen Tube to a Proseal Laryngeal Mask or a Single Lumen Tube After a Thoracic Surgery

Exchange of a Double Lumen Tube With a Proseal Laryngeal Mask or Single Lumen Endotracheal Tube Before Emergence Following a Thoracic Surgery: a Randomized-controlled Trial.

The purpose of this study is to determine whether exchange of the double lumen tube before emergence with a laryngeal mask airway (Proseal) or a tracheal tube will reduce cough at emergence.

Intubation with a double lumen tube is often the preferred method to ensure isolation of the lung and proper exposition of the surgical site during thoracoscopies and thoracostomies. Unfortunately, because of the length and diameter of the double lumen tube, it is known to cause more irritation in the upper airways thereby inducing cough at emergence. In turn, cough has been associated with numerous multisystemic complications. Severe respiratory complications include laryngospasm or upper airway obstruction, desaturation, vocal cord injury, tracheal and bronchial ruptures. The purpose of this study is to determine whether exchange of the double lumen tube before emergence with a laryngeal mask airway (Proseal) or a tracheal tube will reduce cough at emergence.

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The double lumen tube is exchanged with a Proseal (LMA) before emergence according to the study protocol.

The double lumen tube is exchanged with a tracheal tube before emergence according to the study protocol.

Once surgery is completed, the patient is transferred onto a gurney. Train of four is checked. Patient is ventilated with 100% oxygen. Remifentanil 0.5 ug/ml IV is administered. 30 seconds to 1 minute later, secretions are suctioned. Depth of anesthesia is ensured by deflating, inflating, then deflating the tracheal balloon of the DLT and checking for absence of movement, swallowing, or coughing. The DLT is removed, then the LMA proseal is inserted. Respiratory and hemodynamics parameters are noted. Tolerance of the exchange (presence of cough, movement, laryngospasm, desaturation) is noted. Inhalational gas is stopped. Reversal agent is administered if appropriate. Spontaneous breathing is titrated for <12 with boluses of fentanyl 25ug or sufentanil 2.5ug q 5mins. If failure to insert Proseal occurs, a second attempt is made after deepening anesthesia with propofol 1mg/kg and remifentanil 0.5ug/kg IV. If failure occurs again, the patient is intubated with a tracheal tube.

Once surgery is completed, the patient is transferred onto a gurney. Train of four is checked. Patient is ventilated with 100% oxygen. Remifentanil 0.5 ug/ml IV is administered. 30 seconds to 1 minute later, secretions are suctioned. Depth of anesthesia is ensured by deflating, inflating, then deflating the tracheal balloon of the DLT and checking for absence of movement, swallowing, or coughing. The DLT is removed, then a tracheal tube (size 7 for women, size 8 for men) is inserted. Respiratory and hemodynamics parameters are noted. Tolerance of the exchange (presence of cough, movement, laryngospasm, desaturation) is noted. Inhalational gas is stopped. Reversal agent is administered if appropriate. Spontaneous breathing is titrated for <12 with boluses of fentanyl 25ug or sufentanil 2.5ug q 5mins.

Inclusion Criteria: 18-75 year old undergoing elective thoracic surgery intubation with double lumen tube required patients in category ASA 1, 2, 3 Exclusion Criteria: Difficult intubation anticipated Presence of gastro-esophageal reflux Patients considered with a full stomach Body mass index >30 Presence of nasogastric tube when exchange should be done Patients undergoing oesophagogastrectomy Allergy to any medication used in the study

Tanoubi I, Sun JN, Drolet P, Fortier LP, Donati F. Replacing a double-lumen tube with a single-lumen tube or a laryngeal mask airway device to reduce coughing at emergence after thoracic surgery: a randomized controlled single-blind trial. Can J Anaesth. 2015 Sep;62(9):988-95. doi: 10.1007/s12630-015-0403-2. Epub 2015 May 19.