Displaying publications 1 - 20 of 56 in total

  1. Tsan SEH, Wang CY
    Anesth Analg, 2021 02 01;132(2):e33-e34.
    PMID: 33449571 DOI: 10.1213/ANE.0000000000005307
    Matched MeSH terms: Laryngoscopy*
  2. Mohd Khairuddin KA, Ahmad K, Ibrahim HM, Yan Y
    J Voice, 2022 Jan;36(1):106-112.
    PMID: 32456835 DOI: 10.1016/j.jvoice.2020.04.027
    Ideally, an analysis method for laryngeal high-speed videoendoscopy (LHSV) based on the glottal area waveforms (GAW) requires images of a complete view of the glottis to ensure findings that are representatives of the vibratory behaviors of the whole vocal folds. However, in practice, the preferred images may not be obtained at all times. Often, the only available images that a clinician has to work with consist of a partial view of the glottis. This study aims to examine the effects of using images of a partial view of the glottis (ie, posterior-middle, anterior-middle, or middle) on the LHSV-based measures (ie, fundamental frequency (F0GAW), frequency perturbation (jitterGAW), amplitude perturbation (shimmerGAW), open quotient (OQGAW), and Nyquist plot). The participants consisted of 9 young normophonic females. The procedures involved LHSV recording of the vibration of the vocal folds. The images of the complete view of the glottis were analyzed to obtain the LHSV-based measures. The same images were used to simulate the images of partial views of the glottis by changing the outline of the region of interest to include only either the posterior-middle, anterior-middle, or middle parts of the glottis. The LHSV-based measures from the images of the partial views were then compared to those with the complete view . The results showed that all LHSV-based measures from the images of the posterior-middle view were similar to those of the complete view. However, only the F0GAW, jitterGAW, and shimmerGAW from the images of the anterior-middle and middle views were similar to those of the complete view. Lower OQGAW and different Nyquist plots than those of the complete view were generated by the images of the anterior-middle and middle views. In conclusion, all LHSV-based measures from the images of the posterior-middle view of the glottis, and only the F0GAW, jitterGAW, and shimmerGAW from the images of the anterior-middle and middle views of the glottis reflect the vibratory behaviors of the whole vocal folds. The same conclusion could not be applied to the OQGAW and Nyquist plots of the images of the anterior-middle and middle views of the glottis. A possible effect of the presence or absence of a posterior glottal gap on the findings warrants further confirmation.
    Matched MeSH terms: Laryngoscopy*
  3. Cheong CC, Ong SY, Lim SM, Wan A WZ, Mansor M, Chaw SH
    Expert Rev Med Devices, 2023 Feb;20(2):151-160.
    PMID: 36715659 DOI: 10.1080/17434440.2023.2174850
    PURPOSE: A previous study reported a shorter time to tracheal intubation by reducing percentage of glottic opening (POGO) view to <50% when intubating a normal adult airway using the GlidescopeTM blade. We evaluate the efficacy of reducing POGO to <50% when intubating patients with rigid cervical immobilization using CMACTM D blade.

    METHODS: One hundred and four adult patients were randomized to group POGO 100% or POGO <50% . Laryngoscopy was performed by advancing tip of the D blade at vallecula. POGO 100% was achieved by exerting upward force to displace epiglottis until glottic opening from the anterior commissure to inter arytenoid notch. POGO < 50% was acquired by withdrawing the D blade tip dorsally from vallecula. The primary outcome was time to intubation.

    RESULTS: The median time (IQR) to successful intubation was 29 (25-35) seconds for group POGO < 50% and 34 (28-40) seconds for group with POGO 100% (difference in medians, 5 seconds; 95% confidence interval, 2 to 8, p = 0.003). Complications were minor.

    CONCLUSION: Using the CMACTM D blade with a reduced POGO in patients with cervical spine immobilization resulted in faster tracheal intubation.

    TRIAL REGISTRATION: The trial is registered at ClinicalTrial.gov (CT.gov identifier: NCT04833166).

    Matched MeSH terms: Laryngoscopy/methods
  4. Tsan SEH, Lim SM, Abidin MFZ, Ganesh S, Wang CY
    Anesth Analg, 2020 07;131(1):210-219.
    PMID: 31348051 DOI: 10.1213/ANE.0000000000004349
    BACKGROUND: Approximately half of all difficult tracheal intubations (DTIs) are unanticipated; hence, proper positioning during intubation is critical to increase the likelihood of success. The bed-up-head-elevated (BUHE) intubation position has been shown to improve laryngeal view, reduce airway complications, and prolong safe apneic time during intubation. In this study, we sought to determine whether the BUHE intubation position is noninferior to Glidescope (GLSC)-assisted intubation with regard to laryngeal exposure.

    METHODS: A total of 138 American Society of Anesthesiologists (ASA) I to III patients were randomly assigned into 2 groups and underwent baseline laryngoscopy in the sniffing position. Group BUHE patients (n = 69) were then intubated in the BUHE position, while group GLSC patients (n = 69) were intubated using GLSC laryngoscopy. Laryngeal exposure was measured using Percentage of Glottic Opening (POGO) score and Cormack-Lehane (CL) grading, and noninferiority will be declared if the difference in mean POGO scores between both groups do not exceed -15% at the lower limit of a 98% confidence interval (CI). Secondary outcomes measured included time required for intubation (TRI), number of intubation attempts, use of airway adjuncts, effort during laryngoscopy, and complications during intubation.

    RESULTS: Mean POGO score in group BUHE was 80.14% ± 22.03%, while in group GLSC it was 86.45% ± 18.83%, with a mean difference of -6.3% (98% CI, -13.2% to 0.6%). In both groups, there was a significant improvement in mean POGO scores when compared to baseline laryngoscopy in the sniffing position (group BUHE, 25.8% ± 4.7%; group GLSC, 30.7% ± 6.8%) (P < .0001). The mean TRI was 36.23 ± 14.41 seconds in group BUHE, while group GLSC had a mean TRI of 44.33 ± 11.53 seconds (P < .0001). In patients with baseline CL 3 grading, there was no significant difference between mean POGO scores in both groups (group BUHE, 49.2% ± 19.6% versus group GLSC, 70.5% ± 29.7%; P = .054).

    CONCLUSIONS: In the general population, BUHE intubation position provides a noninferior laryngeal view to GLSC intubation. The laryngeal views obtained in both approaches were superior to the laryngeal view obtained in the sniffing position. In view of the many advantages of the BUHE position for intubation, the lack of proven adverse effects, the simplicity, and the cost-effectiveness, we propose that clinicians should consider the BUHE position as the standard intubation position for the general population.

    Matched MeSH terms: Laryngoscopy/instrumentation; Laryngoscopy/methods*; Laryngoscopy/standards
  5. Mohamad H, Mohamad I
    Kobe J Med Sci, 2012;58(2):E60-2.
    PMID: 22972170
    Suspension laryngoscopy is a common laryngeal procedure in Endolaryngeal microsurgery (ELMS). Oral mucosa and dental injuries are the known complications of the procedure. Nerve injury however is an infrequent encounter. We report a rare complication of lingual nerve injury which manifested as tongue numbness and altered taste following Endolaryngeal microsurgery procedure. The condition improved completely after few months of conservative management.
    Matched MeSH terms: Laryngoscopy/adverse effects*
  6. Selina F, Talha KA, Maw K, Aung T, Ahmed F, Solaiman M
    Mymensingh Med J, 2021 Jan;30(1):123-127.
    PMID: 33397862
    Traditional Direct laryngoscope (DL) has been used by anesthesiologist during intubation for general anesthesia patients for more than a century. Video laryngoscope (VL) helps in better visualization of laryngeal orifice during intubation and reduces intubation time. This was a cross sectional study conducted in two Asian Hospitals Queen Elizabeth II hospital of Kotakinabalu, Malaysia and King Faisal Hospital Taif of Saudi Arabia to assess the first-pass success of video laryngoscope and to compare with direct laryngoscope from July 2015 to December 2017. Random lottery technique was applied for sampling. Participants of both groups (VL and DL) were enrolled by simple lottery method. Total 146 patients were enrolled with a set inclusion criterion. Mallampati class, mouth opening, thyromental distance and mobility of atlantooccipital junction were set as predictors of first-pass success. The first-pass success was 98.7% in mallampati II patients and 92.8% in mallampati III patients. Average success rate was 95.75%. The mean success rate of VL and DL was compared and was found VL had a significantly better first-pass success rate than DL (p<0.05).
    Matched MeSH terms: Laryngoscopy
  7. Aziah Ab Rani, Nadarajah, Sanjeevan
    Tongue pain attributed to lingual neuralgia has been reported following dental and oral surgical procedures. Lingual nerve insult through traction and compression during laryngoscopic examination has been proposed as possible etiology for lingual nerve neuralgia. We report a case of tongue ischemia during laryngoscopic procedure which resulted in lingual neuralgia. We recommend that intermittent release of pressure by relaxing the instrument or gag and monitoring the perfusion state of the tongue will reduce the risk of this lingual neuralgia.
    Matched MeSH terms: Laryngoscopy
  8. Mohd Khairuddin KA, Ahmad K, Mohd Ibrahim H, Yan Y
    J Voice, 2021 Jul;35(4):636-645.
    PMID: 31864891 DOI: 10.1016/j.jvoice.2019.12.005
    Despite its clear advantages, laryngeal high-speed videoendoscopy (LHSV) has not yet been accepted as a routine imaging tool for the evaluation of vocal fold vibration due to the unavailability of methods to effectively analyze the huge number of images from the LHSV recording. Recently, a promising LHSV-based analysis method has been introduced. The ability of this analysis method in studying the vocal fold vibratory behaviors had been substantially demonstrated. However, some practical aspects of its clinical applications still require further attention. Most fundamental is that the criteria for the measurement input ie, a segment of interest (SOI), which has not been fully defined. Particularly, the length of the SOI and the location along the sample, where it needs to be selected require further confirmation. Meanwhile, the analysis using any options of a well-delineated glottal area demands verification. Without clear criteria for the SOI, it is difficult to demonstrate the relevance of this analysis method in clinical voice assessment. Therefore, the aim of the present study is to establish the criteria for the SOI, which involved the investigations on the length of the SOI and the location along the sample, where it needs to be selected, as well as the use of any options of a well-delineated glottal area for analysis. The participants in the present study consisted of 36 young normophonic females. The methods involved LHSV recording of the images of the vibrating vocal folds. The captured images were then analyzed using the method. The LHSV-based measures from the analyses were compared according to the specified procedures of each investigation. Results indicated that 2000 frames should be used as the SOI length. The SOI could be selected at any location along the sample as long as well-delineated glottal areas were observed. With the current findings, a more conclusive measurement protocol is available to ensure reliable LHSV-based measures. The findings further support this analysis method for clinical application, which in turn promote LHSV as a reliable laryngeal imaging tool in clinical setting.
    Matched MeSH terms: Laryngoscopy
  9. Saniasiaya J, Kulasegarah J
    Int J Pediatr Otorhinolaryngol, 2020 Dec;139:110473.
    PMID: 33137676 DOI: 10.1016/j.ijporl.2020.110473
    OBJECTIVE: Aim of this review is to evaluate the relation between reflux (either laryngopharyngeal or gastroesophageal) and dysphonia in children.

    DATA SOURCES: PubMed, Scopus, Embase.

    REVIEW METHODS: A literature search was conducted over a period from January 1990 to March 2020. The following search words were used either individually or in combination: voice disorders, laryngopharyngeal reflux, and gastroesophageal reflux. The search was conducted over a period of a month: April 2020.

    RESULTS: Five clinical research were selected based on our objectives and selection criteria. Four studies were of level III evidence. Altogether, a total of 606 patients were pooled with male predominance of 63%. In all studies, reflux was suggested to have strong relation with dysphonia. Majority of cases used 24-h pH monitoring to confirm reflux which yielded positive results in 69%. The top three most common endoscopic findings include: interarytenoid erythema and edema (32/38), vocal cord erythema and edema (160/231) and postglottic edema (141/337). Vocal cord nodules were found in 28% of our patients. Acoustic analysis and perceptual assessment of voice was performed in only 1 study. No complication from any procedure was mentioned in any of the studies. Outcome of treatment was mentioned in 1 study, whereby after 4.5 months of follow-up, 68% of children showed improvement in symptoms.

    CONCLUSION: Current evidence shows that there is strong relation between reflux and dysphonia in children. Most common laryngoscopic findings suggestive of reflux includes interarytenoid erythema and edema, vocal cord erythema and edema and postglottic edema.

    Matched MeSH terms: Laryngoscopy
  10. Thomas RA, Kew TY, Mat Baki M
    BMJ Case Rep, 2022 Feb 09;15(2).
    PMID: 35140081 DOI: 10.1136/bcr-2021-245678
    A 79-year-old smoker with a background history of a treated glottic carcinoma and chronic obstructive pulmonary disease presented with progressive hoarseness, symptoms of aspiration and shortness of breath for 6 months. Examination revealed an ulcero-fungating mass over the posterior commissure of the larynx. A tracheostomy, direct laryngoscopy and biopsy of the mass was performed to secure his airway and to exclude recurrent glottic carcinoma. Reassuringly, a histopathological examination of the mass revealed numerous fungal yeast bodies. He was then treated with itraconazole for 4 weeks and was followed up as and outpatient with complete resolution and no recurrence of the disease.
    Matched MeSH terms: Laryngoscopy
  11. Khamalrudin N, Goh BS
    BMJ Case Rep, 2021 Apr 19;14(4).
    PMID: 33875496 DOI: 10.1136/bcr-2020-235936
    Infantile haemangioma represents a congenital vascular anomaly commonly observed in the head and neck region. Such an occurrence over the postcricoid region, however, is rather unusual. Herein, the authors report a case of a synchronous postcricoid haemangioma in a 7-week-old newborn diagnosed with severe laryngomalacia. In addition to the floppy redundant arytenoid mucosa, flexible laryngoscopy revealed a lobulated bluish mass at the postcricoid. The lesion was hyperintense on T1-weighted sequence and was enhanced with contrast, supporting the diagnosis of a haemangioma. She underwent surgical excision of the haemangioma with intralesional steroid injection. Surveillance at 6-month postoperation did not show disease recurrence.
    Matched MeSH terms: Laryngoscopy
  12. Rahimah AN, Shahfi FI, Masaany M, Gazali N, Siti SH
    J Laryngol Otol, 2016 Oct;130(10):967-968.
    PMID: 27774924
    Laryngotracheal stenosis is a complex condition of airway compromise involving either the larynx or trachea, or both.
    Matched MeSH terms: Laryngoscopy/instrumentation*; Laryngoscopy/methods
  13. Arumainathan UD, Siow SC, Subha ST
    Med J Malaysia, 2002 Jun;57(2):240-1.
    PMID: 24326662
    Acute epiglotiitis is a disease of rapid onset and progression of symptoms and has been well described in children. The importance of being aware of this diagnosis is to prevent an acute upper airway obstruction that can be potentially fatal. Here we describe two cases of adult acute epiglottitis where the patients had severe symptoms of sorethroat but a normal looking oropharynx.
    Matched MeSH terms: Laryngoscopy
  14. Singh AP, Prasad U
    Med J Malaysia, 1982 Sep;37(3):223-6.
    PMID: 7177003
    This paper describes eight cases of successfully treated laryngeal cysts in different age groups with varying presentation problems.
    Matched MeSH terms: Laryngoscopy
  15. Abd Aziz A, Abdullah AF, Ahmad RA
    Malays J Med Sci, 2010 Jul;17(3):68-73.
    PMID: 22135553 MyJurnal
    Vallecular cyst, a benign yet rare laryngeal lesion, may cause stridor and even life-threatening upper airway obstruction in infants. It can cause apnoea and poor feeding habits, thus reducing the chance of survival. Although laryngomalacia remains the most common cause of stridor in this age group, awareness and a high level of suspicion for this condition can help lead to early management and intervention. Direct laryngoscopy is accepted as the gold standard for diagnostic purposes, and marsupialisation of the cyst is the preferred treatment. We describe 2 cases of vallecular cysts in infants admitted to our hospital where timely diagnoses led to appropriate treatment.
    Matched MeSH terms: Laryngoscopy
  16. Mohd Umbaik NA, Mohamad I, Nik Hassan NFH
    J Craniofac Surg, 2020 10;31(7):2064-2065.
    PMID: 32890162 DOI: 10.1097/SCS.0000000000006839
    Matched MeSH terms: Laryngoscopy
  17. Mahli N, Md Zain J, Mahdi SNM, Chih Nie Y, Chian Yong L, Shokri AFA, et al.
    Front Med (Lausanne), 2021;8:677626.
    PMID: 34026801 DOI: 10.3389/fmed.2021.677626
    This prospective, randomized, cross-over study compared the performance of the novel Flexible Tip Bougie™ (FTB) with a conventional bougie as an intubation aid in a simulated difficult airway manikin model among anaesthesiology trainees with regards of first pass success rate, time to intubation, number of attempts and ease of use. Sixty-two anesthesiology trainees, novice to the usage of FTB, participated in this study. Following a video demonstration, each participant performed endotracheal intubation on a manikin standardized to a difficult airway view. Each participant performed direct laryngoscopy and intubated the manikin using a conventional bougie and FTB, at least 1 day in between devices, in a randomized order. The first pass success rate was significantly higher with FTB (98.4%) compared to conventional bougie (85.5%), p = 0.008. The median time to intubation was significantly faster when using FTB, median = 32.0 s [Interquartile range (IQR): 23.8-41.3 s] compared to when using conventional bougie, median = 41.5 s (IQR: 31.8-69.5 s), p < 0.001. The FTB required significantly less intubation attempts compared to conventional bougie, p = 0.024. The overall ease of use, scored on a Likert scale from 1 to 5, was significantly higher in the FTB (4.26 ± 0.53) compared to the conventional bougie (3.19 ± 0.83), p < 0.001. This simulated difficult airway manikin study finding suggested that FTB is a useful adjunct for difficult airway intubation. The FTB offered a higher first pass success rate with a faster time to intubation and less required attempts.
    Matched MeSH terms: Laryngoscopy
  18. Rahmat O, Lim WK, Prepageran N
    Ear Nose Throat J, 2007 May;86(5):264.
    PMID: 17580799
    Matched MeSH terms: Laryngoscopy*
  19. Yezid NH, Poh K, Md Noor J, Arshad A
    BMJ Case Rep, 2019 Aug 10;12(8).
    PMID: 31401573 DOI: 10.1136/bcr-2019-230201
    Managing the difficult airway presents a great challenge to anaesthesiologists and emergency physicians. Although there are many methods and scoring systems available to predict and anticipate difficult airway, the dictum in emergency airway is to always expect the unexpected. We have encountered a novel simple method of improving laryngoscopic view in difficult airway. We report four cases of difficult airway encountered in our district hospital from November 2017 to December 2018, in which intubation was performed using a simple manoeuvre called supine left head rotation (LeHeR). In all these cases, LeHeR manoeuvre has proven to be successful after more than a single attempt at intubation using various methods. The manoeuvre improves drastically the laryngoscopic view of Cormack-Lehane from 3B and 4 to 1 and 2.
    Matched MeSH terms: Laryngoscopy/methods*
  20. Wan Ibadullah WH, Yahya N, Ghazali SS, Kamaruzaman E, Yong LC, Dan A, et al.
    Braz J Anesthesiol, 2016 Jul-Aug;66(4):363-8.
    PMID: 27343785 DOI: 10.1016/j.bjane.2014.11.013
    BACKGROUND AND OBJECTIVE: This was a prospective, randomized clinical study to compare the success rate of nasogastric tube insertion by using GlideScope™ visualization versus direct MacIntosh laryngoscope assistance in anesthetized and intubated patients.

    METHODS: Ninety-six ASA I or II patients, aged 18-70 years were recruited and randomized into two groups using either technique. The time taken from insertion of the nasogastric tube from the nostril until the calculated length of tube had been inserted was recorded. The success rate of nasogastric tube insertion was evaluated in terms of successful insertion in the first attempt. Complications associated with the insertion techniques were recorded.

    RESULTS: The results showed success rates of 74.5% in the GlideScope™ Group as compared to 58.3% in the MacIntosh Group (p=0.10). For the failed attempts, the nasogastric tube was successfully inserted in all cases using rescue techniques. The duration taken in the first attempt for both techniques was not statistically significant; Group A was 17.2±9.3s as compared to Group B, with a duration of 18.9±13.0s (p=0.57). A total of 33 patients developed complications during insertion of the nasogastric tube, 39.4% in Group A and 60.6% in Group B (p=0.15). The most common complications, which occurred, were coiling, followed by bleeding and kinking.

    CONCLUSION: This study showed that using the GlideScope™ to facilitate nasogastric tube insertion was comparable to the use of the MacIntosh laryngoscope in terms of successful rate of insertion and complications.
    Matched MeSH terms: Laryngoscopy/methods*
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