Comparative evaluation of insertion characteristics of PLMA using different techniques in the pediatric age group.

Background and Aims: The laryngeal mask airway ProSeal (PLMA) insertion should be easy, fast, and atraumatic. Most studies have been done on adults who cannot be considered as the reflection of pediatric patients. In this study, we compared the first attempt success rate of three techniques of PLMA insertion: introducer, 90° rotation, and pharyngoscopy technique in the pediatric population. Material and Methods: In this prospective comparative randomized study, a total of 135 patients of American Society of Anesthesiology grade I and II, aged three to eleven years, with normal airways scheduled for elective surgery, were randomly allocated into three groups: introducer, 90° rotation, and pharyngoscopy group. Parameters evaluated were: first attempt insertion success rate, insertion time, ease of insertion score, hemodynamic parameters, oropharyngeal seal pressure, manipulations, PLMA blood staining, postoperative sore throat, and hoarseness. Results: First attempt insertion success rate was higher in the 90° rotation (97.78%) and pharyngoscopy (97.78%) group as compared to the introducer group (93.33%). But the result was not statistically significant. PLMA insertion time was the least in the rotation group, followed by the pharyngoscopy and introducer group (P < 0.0001). Mean arterial pressure and heart rate were significantly raised in the pharyngoscopy versus rotation group and the introducer versus 90° rotation group after PLMA insertion. Oropharyngeal seal pressure was significantly higher in the introducer as compared to the rotation group (P = 0.007). Conclusion: All three techniques had a high first-attempt insertion success rate. As the rotation technique had the best result in insertion time and hemodynamic response, it may be considered a good alternative to pharyngoscopy and introducer technique in pediatric patients of age three to eleven years with a normal airway.

Thyroglossal duct cyst accompanied by laryngomalacia and pulmonary sequestration.

A 2-month-old full-term female infant developed nasal stridor, which progressed to respiratory distress and poor sucking ability. Direct pharyngoscopy showed laryngomalacia and a midline cystic mass in the lingual region. The mass pressed on the epiglottis, causing dyspnea. Computed tomography incidentally revealed extralobar pulmonary sequestration. Direct deroofing of the lingual cyst and plication of the epiglottis were performed at 3 months of age, and the patient recovered from the respiratory distress. Histopathology of the cystic mass showed a thyroglossal duct cyst. Thoracoscopic resection of the pulmonary sequestration was then done at 17 months of age. Thyroglossal duct cysts in the lingual region may cause destabilization of the epiglottis and laryngomalacia, resulting in acquired respiratory obstruction. The combination of thyroglossal duct cyst, laryngomalacia, and pulmonary sequestration is rare; therefore, reports must be accumulated in order to explore the embryological origins of such cases.

Laser-Assisted Retropharyngeal Rigid Nasopharyngoscopy in Dogs.

This article reviews minimally invasive approaches to the nasopharynx. It also introduces a novel approach, transbuccal retrograde rigid pharyngoscopy, and describes three cases in which this approach was used.

Evaluation of Respiratory Particle Emission during Otorhinolaryngological Procedures in the Context of the SARS-CoV-2 Pandemic.

Understanding the risk of infection by routine medical examination is important for the protection of the medical personnel. In this study we investigated respiratory particles emitted by patients during routine otolaryngologic procedures and assessed the risks for the performing physician. We developed two experimental setups to measure aerosol and droplet emission during rigid/flexible laryngoscopy, rhinoscopy, pharyngoscopy, otoscopy, sonography and patient interview for subjects with and without masks. A high-speed-camera setup was used to detect ballistic droplets (approx. > 100 µm) and an aerosol-particle-sizer was used to detect aerosol particles in the range of 0.3 µm to 10 µm. Aerosol particle counts were highly increased for coughing and slightly increased for heavy breathing in subjects without masks. The highest aerosol particle counts occurred during rigid laryngoscopy. During laryngoscopy and rhinoscopy, the examiner was exposed to increased particle emission due to close proximity to the patient's face and provoked events such as coughing. However, even during sonography or otoscopy without a mask, aerosol particles were expelled close to the examiner. The physician's exposure to respiratory particles can be reduced by deliberate choice of examination technique depending on medical indication and the use of appropriate equipment for the examiners and the patients (e.g., FFP2 masks for both).

Resection of recurrent third branchial cleft fistulas assisted by flexible pharyngotomy.

BACKGROUND: Treatment of fistulas arising from the third branchial cleft includes endoscopic cauterization or open cervical fistulectomy. Both approaches are associated with recurrence rates of 14%-18%, and possibly greater rates when the fistula has been treated operatively beforehand. Treatment of fistulas arising from the third branchial cleft is associated with an inordinate recurrence rate. Recurrence may be multifactorial and related to incomplete resection of all of the anatomical elements of the fistula. AIM: To present a new approach that involves complete resection of the recurrent fistula by a combined therapeutic approach. METHODS: Here, 12 adult patients diagnosed with recurrent third branchial cleft fistulas underwent a combined therapy assisted by flexible fiber-optic pharyngoscopy to identify and resect the entry site of the fistula into the pyriform sinus. The fistulous opening into the pyriform sinus was identified by flexible fiber-optic pharyngoscopy. The application of intubation with a guidewire by pharyngoscopy, in addition to the removal of the partial excision of the thyroid cartilage, allowed complete resection of the opening and all parts of the fistula tract. RESULTS: All of the internal openings of the fistulas in the pharynx were found and easily identified by flexible fiber-optic pharyngoscopy. All of the 12 patients underwent complete resection of the recurrent fistula by the combined therapeutic approach. There were no postoperative complications such as parapharyngeal abscess or wound infection, injury or dysfunction of the recurrent laryngeal or superior laryngeal nerves. The pharyngeal edema had degraded, and the pharyngeal wound healed postoperatively within 1 wk. Laryngeal endoscopy and voice analysis were performed on the 14th d post-operatively. Vocal cord movements did not change. The characters of voice for jitter, shimmer, and normalized noise energy were all within normal limits. In addition, no recurrences were observed during the 13-60 mo follow-up period. CONCLUSION: It can be concluded that the proposed combined therapy is associated with excellent results, minimal morbidity, and no recurrence.

Risk of asphyxiation from Vernagel ingestion.

Vernagel (sodium polyacrylate) is a powder commonly used in hospitals worldwide for the management and disposal of body fluids. It reacts with fluids to form a semisolid gel. Its main use is to reduce spillages. If ingested, this substance presents significant risk of asphyxiation. There have been 15 reported cases of Vernagel ingestion in 6 years and 1 death from asphyxiation. We present the case of an elderly patient who was admitted following a fall. He accidentally ingested a sachet of Vernagel during the early hours of the morning. An urgent rigid panendoscopy was performed and the material was evacuated using suction aspiration. Patients should be supervised when using Vernagel on the ward, to avoid ingestion. Ear, nose and throat doctors should be aware of Vernagel and its properties. Owing to the risk of airway obstruction, excellent coordination between the anaesthetist and surgeon is crucial, and prompt management is required.