Thoracic Surgery Clinical Trial
Official title:
Criteria for Choice of Right Double Lumen Tube for Lung Surgery
There are specific guidelines for choice of Lt DLT size in correlation to patient's height
and tracheal diameter on chest X-ray/CT scan. Accordingly to these criteria the RT DLT size
is determined.
Should the criteria for determining the appropriate size be the same for Rt and Lt DLT?
Objective: Adequacy of criteria for Lt DLT size in the determination of RT DLT size before
thoracic surgery.
Methods: A prospective, controlled, comparative study. After obtaining informed consent,
male and female patients over 18 years of age , candidates for elective thoracic surgery
obliging DLT intubation, will be enrolled in the study. Children, pregnant and mentally
incompetent patients will not be included.
Preoperative evaluation will be performed by an anesthesiologist and the patients will
receive premedication with respect to the planned operation and concurrent disease status.
The age, gender, height and weight of the patient will be recorded. On the chest CT series,
measurements of the tracheal length and diameter, both main bronchial, and RUL bronchial
orifice diameter in millimeters will be performed, using an universal measurement system .
All patients will receive intravenous induction with Fentanyl 3-5 mcg/kg, Propofol 2-2.5
mg/kg, and Rocuronium 0.6-0.8 mg/kg. All patients will be intubated by the same
anesthesiologist. Fiberoptic bronchoscopy will be performed for proper positioning of the
DLT.
Accordingly to the indication , patients will be intubated with Lt or Rt DLT -Mallinkrodt
Broncho-cath, routinely used for this kind of operations.
Patients scheduled for right lung operation will be intubated with Lt DLT. The size of the
Lt DLT will be determined accordingly to the guidelines, in correlation with patient's
height and CT measurements . Lt DLT intubation will be performed by the generally accepted
technique, under FOB control. In case the Lt DLT size will prove to be inappropriate , a
smaller/larger DLT will be inserted, accordingly.
Patients scheduled for left lung operation will be intubated with Rt DLT. The size of the Rt
DLT will be determined in correlation with patient's height and CT measurements, accordingly
to the guidelines for Lt DLT size . In case the Rt DLT positioning is impossible due to
inappropriate adjustment of the ventilation slot against the RUL bronchus orifice and/or
tracheal protrusion of the bronchial cuff, the Rt DLT will be substituted by a
smaller/larger Rt DLT , respectively.
The number of attempts on intubation and repositionings of the DLT during surgery will be
recorded.
The volume of air in the bronchial and tracheal cuff will be recorded. Information about the
adequacy of lung separation will be obtained by the surgeons.
Postoperative clinical and X-ray follow up will be performed about lung recruitment and
ventilatory complications ( atelectasis, pneumonia) Throughout the study no additional x-ray
or laboratory checkup will be required, and no additional invasive procedures or treatment
will be performed, than the usually accepted.
Statistical analysis of collected clinical and rentgenologic data will be performed .
;
Observational Model: Case Control, Time Perspective: Prospective
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