Retrograde-Assisted Fiberoptic Intubation: An Unusual But Useful Use Of Flexible Fiberoptic Endoscope
A Hussain, N Ahmad, A Channa
and difficult airway, flexible fiberoptic endoscope, retrograde technique
A Hussain, N Ahmad, A Channa. Retrograde-Assisted Fiberoptic Intubation: An Unusual But Useful Use Of Flexible Fiberoptic Endoscope. The Internet Journal of Anesthesiology. 2003 Volume 8 Number 2.
The flexible fiberoptic endoscope is invaluable equipment used in the practice of anaesthesiology and intensive care medicine. Its basic use is as an aid to difficult intubation either by the oral or nasotracheal route. A few numbers of cases of Retrograde-Assisted Fiberoptic Intubation have been reported in the literature. We report a similar case.
A 42-year-old male patient was scheduled for elective right total hip replacement.
Inability to move right lower limb for the last few years.
Past Medical History:
Known case of ankylosing spondilitis for the last 24 years.
No history of taking steroids or NSAIDs for the last one year.
No history of diabetes mellitus, hypertension, COPD or allergies etc.
Past Surgical History:
Left total hip replacement done under epidural anaesthesia.
Perioperative course remained uneventful.
The patient was of short stature.
His height was 156 cm and weight 68 kg.
There was no pallor, cyanosis, jaundice or edema.
He was lying on the bed with two big pillows under the head.
Respiration was abdominal and chest movements were seemed to be restricted on either side.
The examination of all other systems was unremarkable.
Mouth opening 3.4 cms.
Thyromental distance 4.5 cms.
All teeth present with good oral hygiene
Unable to flex, extend or rotate his neck on either side at all.
Unable to protrude his lower incisors in front of upper incisors.
MalIampatti Class III
X-ray cervical spine:
Tablet Lorazepam 2 mg po 2 hours before operation
Tablet ranitidine 150 mg po 2 hours before operation
Tablet Metoclopramide 10 mg po 2 hours before operation
After failed epidural block and awake intubation with the conventional method of endotracheal tube insertion under topical anaesthesia by the use of a flexible fiberoptic bronchoscope (Olympus BF 3c 10), a retrograde assisted fiberoptic intubation was considered. The cricothyroid membrane was identified and 5.0 ml of Xylocaine 2% was given through this route. A 16 G intravenous canula was successfully passed into the trachea at the injection site. Stainless steel safety guide wire with a fixed core straight flexible tip (0.97mm x 100cm) was passed through the intravenous canula and retrieved from the oral cavity. A well-lubricated 8 mm ID cuffed endotracheal tube was passed over the endoscope. The oral end of the guide wire was passed through the suction port of endoscope in retrograde direction while the other end was clamped with artery forceps at cricothyriod membrane. The bronchoscope was introduced into trachea as shown in the Figure 3.
Tracheal rings were identified, the guide wire removed and the endotracheal tube rail-roaded over the bronchoscope and then the bronchoscope was removed. Correct placement of endotracheal tube was confirmed with the use of an Et CO2 detector device.
In 1960, Butler and Cirilo1 first described passing the guide wire via a tracheotomy stoma. This was given the name of retrograde intubation. Waters2 who passed the epidural catheter with the help of Thoughy needle via the cricothyriod membrane to assist tracheal intubation presented the concept of percutaneous guide wire insertion in 1963. We do not know exactly who first described the Retrograde Fiberoptic Assisted Intubation. Tobias et al 3 described the method of Retrograde Fiberoptic Assisted Intubation with guide wire but they passed the bronchoscope along side of the guide wire. Audenaert et al 4 and Bissinger et al 5 reported cases of retrograde fiberscope assisted intubation through the working channel of a flexible fiberscope. S. Rao Mallampati6 has suggested the use of suction port of fiberscope for retrograde intubation.
We are very thankful to our anaesthesia technicians for assisting with this procedure.
Dr. Altaf Hussain MBBS; DA; MCPS; FCPS. Department Of Anaesthesiology (41) King Khalid University Hospital Post Box No.7805 Al-Riyadh 11472 Saudia Arabia E-mail: email@example.com