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The objective of this study was to evaluate graft success, hearing improvement, and complications following perichondrium–cartilage underlay myringoplasty without external auditory canal packing.
Methods
In this prospective study, we examined 37 ears of 37 patients with large perforations who underwent endoscopic perichondrium–cartilage underlay myringoplasty without external auditory canal packing. Patients were followed up for six months.
Results
At one week after the surgery, the graft was in situ in 35 (94.6 per cent) ears. At 2–3 weeks post-surgery, among the 35 ears without infection, the graft was in situ in 29 (82.9 per cent) ears, and the graft was bulging in 6 (17.1 per cent) ears. At six months post-surgery, the graft success rate was 94.6 per cent (35 of 37 ears). No graft lateralisation or graft medialisation was encountered during the follow-up period.
Conclusion
The absence of external auditory canal packing did not affect the graft success or hearing improvement following underlay myringoplasty. Thus, external auditory canal packing does not appear to be necessary for underlay myringoplasty.
This study aimed to compare the graft success rate, hearing outcomes, operation time and complications between myringoplasty with raising of a mucosal flap (RMF) and raising of a tympanomeatal flap (RTF) for the repair of subtotal perforations.
Methods
Subtotal perforations were recruited and randomly allocated to either the RMF group or the RTF group. The graft success rate, hearing outcomes and complications were evaluated at 6 months post-operatively.
Results
The mean operation time was 31.4 ± 2.8 minutes (range: 26–47) in the RMF group and 57.6 ± 0.9 minutes in the RTF group (p < 0.01). The graft success rate was 96.0 per cent in the RMF group and 88.9 per cent in the RTF group (p = 0.659).
Conclusion
Endoscopic myringoplasty with the RMF achieved similar graft success and hearing gain compared to the tympanomeatal flap technique for repairing subtotal perforations, but with significantly shorter operation time and minimal temporary hypogeusia.
To report a single-centre experience in the endoscopic carbon dioxide laser-assisted approach to glomus tympanicum tumours.
Methods
A retrospective case review was conducted of patients diagnosed with class A1 to B1 glomus tympanicum tumours who underwent exclusive transcanal endoscopic carbon dioxide laser surgery.
Results
Seven patients fulfilled the inclusion criteria. All patients (100 per cent) were women, with a mean age of 65.4 years (standard deviation, 13.6). There were five A2 tumours, one A1 tumour and one B1 tumour. One patient presented with a delayed tympanic membrane perforation needing myringoplasty on follow up. There were no substantial post-operative complications. The mean hospitalisation time was 9.5 hours (standard deviation, 9.8). The mean follow-up period was 32.7 months (standard deviation, 13.1), with all cases having resolution of pulsatile tinnitus and no tumour recurrence.
Conclusion
The study provides further evidence on the safety and efficacy of endoscopic carbon dioxide laser surgery as a minimally invasive technique for treating early-stage glomus tympanicum tumours.
Rhinosinusitis is one of the most common reasons for a visit to otolaryngology clinics. Some patients are candidates for sinus surgery. Infiltration of 1:100 000 adrenaline in the pterygopalatine fossa was studied, with the aim of evaluating the effect on bleeding in the surgical field.
Methods
This double-blind clinical trial was conducted in 2021–2022 on 40 candidates for endoscopic sinus surgery. For each patient, one side of the pterygopalatine fossa was randomly selected to be infiltrated with a vasoconstrictor. Surgical field bleeding on each side was evaluated.
Results
Blood loss was 35.8 ± 20.9 ml in the study group and 38.4 ± 23.7 ml for the control group, with no statistically significant difference between groups (p = 0.49). In addition, there was no difference between the two groups in terms of the surgical field based on Boezaart scores.
Conclusion
Although there are some recommendations on the usage of vasoconstrictors via the pterygopalatine foramen, debate remains.
The focus of this chapter is on focusing and self-imaging of optical beams occurring in a graded-index rod. Section 3.1 provides a geometrical-optics perspective and shows why optical rays follow a curved path inside a GRIN medium. The modes of such a medium are used in Section 3.2 to find a propagation kernel and use it discuss the phenomenon of self-imaging. Section 3.3 is devoted to studying how a GRIN rod can be used as a flat lens to focus an incoming optical beam. Imaging characteristics of such a lens are also considered in this section. Several important applications of GRIN devices are discussed in Section 3.4.
Lesions requiring resection in the posterior mediobasal temporal or adjacent occipital lobe can be difficult to access surgically. An extra-axial supracerebellar approach utilizing an opening in the tentorium can be accomplished through a keyhole suboccipital paramedian craniotomy to give the surgeon adequate exposure to address lesions in this location. Herein we describe the keyhole technique for a supracerebellar-transtentorial approach to posterior mediobasal temporal lesions and the associated benefits, challenges, and clinical pearls.
To compare the results of endoscopic and microscopic ossicular chain reconstruction surgery.
Methods
Patients undergoing ossicular chain reconstruction surgery via an endoscopic (n = 31) or microscopic (n = 34) technique were analysed for age, gender, Middle Ear Risk Index, ossicular chain defect, incision type, ossicular chain reconstruction surgery material, mean air conduction threshold, air–bone gap, air–bone gap gain, word recognition score, mean operation duration and mean post-operative follow up.
Results
Post-operative air conduction, air–bone gap and word recognition score improved significantly in both groups (within-subject p < 0.001 for air conduction and air–bone gap, and 0.026 for word recognition score); differences between groups were not significant (between-subject p = 0.192 for air conduction, 0.102 for air–bone gap, and 0.709 for word recognition score). Other parameters were similar between groups, except for incision type. However, endoscopic ossicular chain reconstruction surgery was associated with a significantly shorter operation duration (p < 0.001).
Conclusion
Endoscopic ossicular chain reconstruction surgery can achieve comparable surgical and audiological outcomes to those of microscopic ossicular chain reconstruction surgery in a shorter time.
The World Health Organization declared coronavirus disease 2019 a pandemic on 11th March 2020. There is concern regarding performing endonasal surgical procedures because of a high viral load in the nasopharynx. This paper describes our experience in conducting emergency and urgent endonasal operations during the peak of the coronavirus disease 2019 pandemic in the UK.
Objectives
To show the outcome of endonasal surgery during the peak of the coronavirus disease 2019 pandemic and to assess the post-operative rate of nosocomial coronavirus disease 2019 infection.
Methods
A retrospective cohort study was conducted of all patients who underwent high priority endoscopic nasal surgery or anterior skull base surgery between 23rd March and 15th June 2020 at University Hospitals Birmingham NHS Trust.
Results
Twenty-four patients underwent endonasal surgery during the study period, 12 were males and 12 were females. There was no coronavirus-related morbidity in any patient.
Conclusion
This observational study found that it is possible to safely undertake urgent endonasal surgery; the nosocomial risk of coronavirus disease 2019 can be mitigated with appropriate peri-operative precautions.
Parasite infection in young animals can affect host traits related to demographic processes such as survival and reproduction, and is therefore crucial to population viability. However, variation in infection among juvenile hosts is poorly understood. Experimental studies have indicated that effects of parasitism can vary with host sex, hatching order and hatch date, yet it remains unclear whether this is linked to differences in parasite burdens. We quantified gastrointestinal nematode burdens of wild juvenile European shags (Phalacrocorax aristotelis) using two in situ measures (endoscopy of live birds and necropsy of birds that died naturally) and one non-invasive proxy measure (fecal egg counts (FECs)). In situ methods revealed that almost all chicks were infected (98%), that infections established at an early age and that older chicks hosted more worms, but FECs underestimated prevalence. We found no strong evidence that burdens differed with host sex, rank or hatch date. Heavier chicks had higher burdens, demonstrating that the relationship between burdens and their costs is not straightforward. In situ measures of infection are therefore a valuable tool in building our understanding of the role that parasites play in the dynamics of structured natural populations.
To evaluate the therapeutic effects of functional endoscopic sinus surgery in patients with chronic rhinosinusitis who were unresponsive to medical treatment.
Methods:
A total of 232 patients were divided into 2 groups: a functional endoscopic sinus surgery group (n = 162) and a conservative therapy group (n = 70). Efficacy was assessed in terms of Lund–Kennedy endoscopy scores and Sino-Nasal Outcome Test 20 symptom scores.
Results:
In the functional endoscopic sinus surgery group, Lund–Kennedy and Sino-Nasal Outcome Test 20 scores were significantly lower at 3, 6 and 12 months post-surgery compared with baseline scores. In the conservative therapy group, both sets of scores were significantly lower at 3 months, but not at 12 months. In this latter group, the Lund–Kennedy scores decreased only slightly and the Sino-Nasal Outcome Test 20 scores significantly decreased at six months compared with initial scores, indicating disparity between the subjective and objective measures. Patient-reported symptom improvement was better in the functional endoscopic sinus surgery group than in the medication group at 12 months (p < 0.001).
Conclusion:
These findings suggest that functional endoscopic sinus surgery has better efficacy over a longer period compared with conservative therapy.
Image capture systems that display and record endoscopic images are important for documentation and teaching. We have modified a universal serial bus microscope to couple with most clinical endoscopes used in our practice. This very economical device produces images suitable for teaching, and potentially for clinical use. The implications of this could be significant for teaching, patient education, documentation and the developing world.
To demonstrate the importance of pre-operative ear, nose and throat assessment in patients undergoing endoscopic, transsphenoidal surgery for pituitary tumours.
Case reports:
Literature pertaining to the pre-operative otorhinolaryngological assessment and management of patients undergoing endoscopic anterior skull base surgery is sparse. We describe two cases from our series of 59 patients undergoing endoscopic pituitary surgery. The first case involved a young male patient with a large pituitary macroadenoma. His main complaint was visual impairment. He had no previous history of sinonasal pathology and did not complain of any nasal symptoms during the pre-operative neurosurgical assessment. At the time of surgery, a purulent nasal discharge was seen emanating from both middle meati. Surgery was abandoned due to the risk of post-operative meningitis, and postponed until the patient's chronic rhinosinusitis was optimally managed. The second patient was a 47-year-old woman with a large pituitary macroadenoma, who presented to the neurosurgical department with a main complaint of diplopia. She too gave no history of previous nasal problems, and she underwent uneventful surgery using the endoscopic, transnasal approach. Two weeks after surgery, she presented to the emergency unit with severe epistaxis. A previous diagnosis of hereditary haemorrhagic telangiectasia was discovered, and further surgical and medical intervention was required before the epistaxis was finally controlled.
Conclusions:
Pre-operative otorhinolaryngological assessment is essential prior to endoscopic pituitary or anterior skull base surgery. A thorough otorhinolaryngological history will determine whether any co-morbid diseases exist which could affect the surgical field. Nasal anatomy can be assessed via nasal endoscopy and sinusitis excluded. Computed tomography imaging is a valuable aid to decisions regarding additional procedures needed to optimise access to the pituitary fossa.
We introduce here an easy but effective method for detailed observation of the larynx and hypopharynx. During the endoscopic observation, the patient's head is turned to one side. Anatomical structures on the same side of the endolarynx, such as the laryngeal ventricle and inferior surface of the vocal fold, are easily observed. In addition, observation of the opposite side of the hypopharynx also becomes easier. Such head turning is also useful in patients with an oblique larynx, in whom the epiglottis obstructs insertion of the endoscope. This is a simple but very effective technique for laryngeal and hypopharyngeal observation.
A case of osteochondroma of the posterior nasal septum is presented. A 57-year-old female patient presented with a history of bilateral nasal obstruction for 20 years. To the best of our knowledge, this is the second reported case of an osteochondroma of the nasal septum. It was treated by endoscopic transnasal transseptal surgery.
We present the results of a confidential telephone survey of ENT units in England on the disinfection of flexible fibre-optic nasendoscopes out-of-hours. The on-call residents of 124 units were contacted and questioned. In 35.1 per cent of units surveyed, the on-call resident was primarily responsible for cleaning the scopes after use. Only 46 per cent of these junior doctors had access to a chemical sterilant to allow for high-level disinfection of these scopes. Provision for disinfection of scopes was poorer in teaching hospitals and in units that served inner city populations. Only 12.1 per cent of Senior House Officers (SHOs) received any training in disinfection techniques and only 25.5 per cent of units kept a register of patients nasendoscoped out-of-hours for purposes of contact tracing.
Endoscopic endonasal dacryocystorhinostomy (EDCR) has established itself as a popular means of relieving post-saccal obstruction of the naso-lacrimal ducts. Soft tissue stenosis of the rhinostomy is a significant cause of long-term failure. We describe the technique of using a standard otological T-tube as a cheap and easy self-retaining stent to ensure a patent rhinostomy following EDCR.
Flexible fibre-optic nasendoscopes have become a ubiquitous ENT out-patient tool for the inspection of the nasopharynx, larynx and hypopharynx. Disinfection of the instrument between patient use is important to prevent potential spread of infection but the methods used vary considerably. We designed a questionnaire which was piloted and then sent to 115 UK ENT out-patient departments to establish current UK practice. Most units (67 per cent) use a chemical soak system but the type of chemical disinfectant, the method of delivery and the duration of soak varied considerably. A few hospitals use a disposable plastic sheath system and others simply wipe the instrument with an alcohol swab in between patient use. The protocols for disinfection after high risk patients e.g. human immunodeficiency virus (HIV), hepatitis B varied from hospital to hospital.
The results demonstrate a lack of standard practice that is wasteful of financial resources and may expose patients to unnecessary risk. There is a need for an authoritative ENT body to publish national guidelines as may be found in other specialities and other countries.
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