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Kaneko T, Kato T, Shiko Y, Kawasaki Y, Koyama K. Assessment of pre-extubating recurrent laryngeal nerve palsy using ultrasound in postoperative patients with esophageal cancer: a prospective observational study. J Anesth 2024:10.1007/s00540-024-03315-7. [PMID: 38430260 DOI: 10.1007/s00540-024-03315-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 02/01/2024] [Indexed: 03/03/2024]
Abstract
PURPOSE Ultrasound performed after extubation has been suggested to be useful for the diagnosis of recurrent laryngeal nerve (RLN) paralysis. However, the use of ultrasound for this purpose before extubation has not been examined. The aim of this study was to examine the versatility (interrater reliability) and usefulness of ultrasound for evaluating the movement of vocal cords before extubation. METHODS The subjects were 30 patients who underwent radical surgery for esophageal cancer from August 2020 to December 2021. An experienced examiner performed an ultrasound examination before and after elective extubation on the day after surgery to evaluate RLN paralysis and record videos. Bronchoscopy was then performed to make a definite diagnosis. Three anesthetists blinded to the diagnosis also evaluated the cases using the videos, and the versatility of the examination was determined using a kappa test. RESULTS The diagnostic accuracies of the examiner and three anesthetists were 76.7%, 50.0%, 53.3%, and 46.7%, respectively, and the kappa coefficients for the examiner with the anesthetists were 0.310, 0.502, and 0.169, respectively. The sensitivity, specificity, positive predictive value and negative predictive value for diagnosis of RLN paralysis by the examiner using ultrasound before extubation were 0.57, 0.95, 0.80, and 0.87, respectively. CONCLUSION These results indicate a lack of versatility of the ultrasound examination based on the low kappa coefficients. However, with an experienced examiner, ultrasound can serve as a non-invasive examination that can be performed before extubation with high accuracy and specificity for diagnosis of postoperative RLN paralysis.
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Affiliation(s)
- Tomomi Kaneko
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe-city, Saitama, 350-8550, Japan.
| | - Takao Kato
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe-city, Saitama, 350-8550, Japan
| | - Yuki Shiko
- Biostatistics Section, Clinical Research Center, Chiba University Hospital, Chiba, Japan
| | - Yohei Kawasaki
- Faculty of Nursing, Japanese Red Cross College of Nursing, Tokyo, Japan
| | - Kaoru Koyama
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe-city, Saitama, 350-8550, Japan
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Takahashi M, Toyama H, Takahashi K, Kaiho Y, Ejima Y, Yamauchi M. Impact of intraoperative fluid management on postoperative complications in patients undergoing minimally invasive esophagectomy for esophageal cancer: a retrospective single-center study. BMC Anesthesiol 2024; 24:29. [PMID: 38238681 PMCID: PMC10795296 DOI: 10.1186/s12871-024-02410-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 01/10/2024] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Esophagectomy is a high-risk procedure that can involve serious postoperative complications. There has been an increase in the number of minimally invasive esophagectomies (MIEs) being performed. However, the relationship between intraoperative management and postoperative complications in MIE remains unclear. METHODS After the institutional review board approval, we enrolled 300 patients who underwent MIE at Tohoku University Hospital between April 2016 and March 2021. The relationships among patient characteristics, intraoperative and perioperative factors, and postoperative complications were retrospectively analyzed. The primary outcome was the relationship between intraoperative fluid volume and anastomotic leakage, and the secondary outcomes included the associations between other perioperative factors and postoperative complications. RESULTS Among 300 patients, 28 were excluded because of missing data; accordingly, 272 patients were included in the final analysis. The median [interquartile range] operative duration was 599 [545-682] minutes; total intraoperative infusion volume was 3,747 [3,038-4,399] mL; total infusion volume per body weight per hour was 5.48 [4.42-6.73] mL/kg/h; and fluid balance was + 2,648 [2,015-3,263] mL. The postoperative complications included anastomotic leakage in 68 (25%) patients, recurrent nerve palsy in 91 (33%) patients, pneumonia in 62 (23%) patients, cardiac arrhythmia in 13 (5%) patients, acute kidney injury in 5 (2%) patients, and heart failure in 5 (2%) patients. The Cochrane-Armitage trend test indicated significantly increased anastomotic leakage among patients with a relatively high total infusion volume (P = 0.0085). Moreover, anastomotic leakage was associated with male sex but not with peak serum lactate levels. Patients with a longer anesthesia duration or recurrent nerve palsy had a significantly higher incidence of postoperative pneumonia than those without. Further, the incidence of postoperative pneumonia was not associated with the operative duration, total infusion volume, or fluid balance. The operative duration and blood loss were related to the total infusion volume. Acute kidney injury was not associated with the total infusion volume or serum lactate levels. CONCLUSIONS Among patients who underwent MIE, the total infusion volume was positively correlated with the incidence of anastomotic leakage. Further, postoperative pneumonia was associated with recurrent nerve palsy but not total infusion volume or fluid balance.
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Affiliation(s)
- Misaki Takahashi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Hiroaki Toyama
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan.
| | - Kazuhiro Takahashi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Yu Kaiho
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Yutaka Ejima
- Department of Surgical Center and Supply, Sterilization, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
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Menegaux F, Baud G, Chereau N, Christou N, Deguelte S, Frey S, Guérin C, Marciniak C, Paladino NC, Brunaud L, Caiazzo R, Donatini G, Gaujoux S, Goudet P, Hartl D, Lifante JC, Mathonnet M, Mirallié E, Najah H, Sebag F, Trésallet C, Pattou F. SFE-AFCE-SFMN 2022 consensus on the management of thyroid nodules: Surgical treatment. Ann Endocrinol (Paris) 2022; 83:415-422. [PMID: 36309207 DOI: 10.1016/j.ando.2022.10.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The SFE-AFCE-SFMN 2022 consensus deals with the management of thyroid nodules, a condition that is a frequent reason for consultation in endocrinology. In more than 90% of cases, patients are euthyroid, with benign non-progressive nodules that do not warrant specific treatment. The clinician's objective is to detect malignant thyroid nodules at risk of recurrence and death, toxic nodules responsible for hyperthyroidism or compressive nodules warranting treatment. The diagnosis and treatment of thyroid nodules requires close collaboration between endocrinologists, nuclear medicine physicians and surgeons, but also involves other specialists. Therefore, this consensus statement was established jointly by 3 societies: the French Society of Endocrinology (SFE), French-speaking Association of Endocrine Surgery (AFCE) and French Society of Nuclear Medicine (SFMN); the various working groups included experts from other specialties (pathologists, radiologists, pediatricians, biologists, etc.). This section deals with the surgical management of thyroid nodules.
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Affiliation(s)
- Fabrice Menegaux
- Service de Chirurgie Générale, Viscérale et Endocrinienne, GH Pitié-Salpêtrière, AP-HP, Sorbonne Université, Paris, France.
| | - Gregory Baud
- Service de Chirurgie Générale et Endocrinienne, CHRU de Lille, Université de Lille, Lille, France
| | - Nathalie Chereau
- Service de Chirurgie Générale, Viscérale et Endocrinienne, GH Pitié-Salpêtrière, AP-HP, Sorbonne Université, Paris, France
| | - Niki Christou
- Service de Chirurgie Digestive, Endocrinienne et Générale, CHU de Limoges, Limoges, France
| | - Sophie Deguelte
- Service de Chirurgie Digestive et Endocrinienne, Hôpital Robert-Debré, Université de Champagne Ardennes, Reims, France
| | - Samuel Frey
- Service de Chirurgie Cancérologique, Digestive et Endocrinienne, Institut des Maladies de l'Appareil Digestif, CHU de Nantes, Université de Nantes, Nantes, France
| | - Carole Guérin
- Service de chirurgie Générale, Endocrinienne et Métabolique, CHU La Conception, AP-HM, Aix Marseille Université, Marseille, France
| | - Camille Marciniak
- Service de Chirurgie Générale et Endocrinienne, CHRU de Lille, Université de Lille, Lille, France
| | - Nunzia Cinzia Paladino
- Service de chirurgie Générale, Endocrinienne et Métabolique, CHU La Conception, AP-HM, Aix Marseille Université, Marseille, France
| | - Laurent Brunaud
- Département de Chirurgie Viscérale, Métabolique et Cancérologique, Université de Lorraine, CHRU Nancy, Hôpital Brabois Adultes, Vandœuvre les Nancy, France
| | - Robert Caiazzo
- Service de Chirurgie Générale et Endocrinienne, CHRU de Lille, Université de Lille, Lille, France
| | - Gianluca Donatini
- Service de Chirurgie Viscérale et Endocrinienne, CHU-Poitiers, Poitiers Université, Poitiers, France
| | - Sebastien Gaujoux
- Service de Chirurgie Générale, Viscérale et Endocrinienne, GH Pitié-Salpêtrière, AP-HP, Sorbonne Université, Paris, France
| | - Pierre Goudet
- Département de Chirurgie Générale et Endocrinienne, CHU de Dijon, Université de Bourgogne, Dijon, France
| | - Dana Hartl
- Département d'Anesthésie, de Chirurgie et de Radiologie Interventionnelle, Unité de Chirurgie Thyroïdienne, Institut Gustave Roussy, Villejuif, France
| | - Jean-Christophe Lifante
- Service de Chirurgie Endocrinienne, Hospices Civils de Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Muriel Mathonnet
- Service de Chirurgie Digestive, Endocrinienne et Générale, CHU de Limoges, Limoges, France
| | - Eric Mirallié
- Service de Chirurgie Cancérologique, Digestive et Endocrinienne, Institut des Maladies de l'Appareil Digestif, CHU de Nantes, Université de Nantes, Nantes, France
| | - Haythem Najah
- Service de Chirurgie Digestive et Endocrinienne, Hôpital Haut Lévêque, CHU de Bordeaux, Université de Bordeaux, Bordeaux, France
| | - Frederic Sebag
- Service de chirurgie Générale, Endocrinienne et Métabolique, CHU La Conception, AP-HM, Aix Marseille Université, Marseille, France
| | - Christophe Trésallet
- Service de Chirurgie Digestive, Bariatrique et Endocrinienne, HU Paris Seine-Saint-Denis, AP-HP, Hôpital Avicenne, Bobigny, France
| | - Francois Pattou
- Service de Chirurgie Générale et Endocrinienne, CHRU de Lille, Université de Lille, Lille, France
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Tani M, Kanazawa T, Shioji N, Shimizu K, Iwasaki T, Morimatsu H. Successful treatment with positive airway pressure ventilation for tension pneumopericardium after pericardiocentesis in a neonate: a case report. JA Clin Rep 2020; 6:79. [PMID: 33029685 PMCID: PMC7541804 DOI: 10.1186/s40981-020-00384-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 09/27/2020] [Accepted: 09/29/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pneumopericardium in neonates is often associated with respiratory diseases, of which positive pressure ventilation (PPV) is an exacerbating factor. Here, we present a neonate case of pneumopericardium after cardiac surgery which was resolved after applying PPV. CASE PRESENTATION A 28-day-old neonate with left recurrent nerve palsy after aortic reconstruction for interrupted aortic arch developed pericardial effusion. Pericardiocentesis was performed under general anesthesia, and a drainage tube was left in the pericardium. After extubation, stridor gradually exacerbated, following hemodynamic deterioration. A chest X-ray demonstrated pneumopericardium. Upper airway stenosis due to recurrent nerve palsy developed excessive negative pleural pressure, and air was drawn into pericardium via the insertion site of the drainage tube. After tracheal intubation and applying PPV, the pneumopericardium improved. CONCLUSION PPV does not always exacerbate pneumopericardium. In a patient with pericardial-atmosphere communication, increased inspiration effort can cause pneumopericardium, and PPV is a therapeutic option to alleviate the pneumopericardium.
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Affiliation(s)
- Makiko Tani
- Department of Anesthesiology and Resuscitology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Tomoyuki Kanazawa
- Department of Anesthesiology and Resuscitology, Okayama University Hospital, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Naohiro Shioji
- Department of Anesthesiology and Resuscitology, Okayama University Hospital, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Kazuyoshi Shimizu
- Department of Anesthesiology and Resuscitology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Tatsuo Iwasaki
- Department of Anesthesiology and Resuscitology, Okayama University Hospital, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Hiroshi Morimatsu
- Department of Anesthesiology and Resuscitology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
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Lorenz K, Raffaeli M, Barczyński M, Lorente-Poch L, Sancho J. Volume, outcomes, and quality standards in thyroid surgery: an evidence-based analysis-European Society of Endocrine Surgeons (ESES) positional statement. Langenbecks Arch Surg 2020; 405:401-425. [PMID: 32524467 PMCID: PMC8275525 DOI: 10.1007/s00423-020-01907-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 05/28/2020] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Continuous efforts in surgical speciality aim to improve outcome. Therefore, correlation of volume and outcome, developing subspecialization, and identification of reliable parameters to identify and measure quality in surgery gain increasing attention in the surgical community as well as in public health care systems, and by health care providers. The need to investigate these correlations in the area of endocrine surgery was identified by ESES, and thyroid surgery was chosen for this analysis of the prevalent literature with regard to outcome and volume. MATERIALS AND METHODS A literature search that is detailed below about correlation between volume and outcome in thyroid surgery was performed and assessed from an evidence-based perspective. Following presentation and live data discussion, a revised final positional statement was presented and consented by the ESES assembly. RESULTS There is a lack of prospective randomized controlled studies for all items representing quality parameters of thyroid surgery using uniform definitions. Therefore, evidence levels are low and recommendation grades are based mainly on expert and peer evaluation of the prevalent data. CONCLUSION In thyroid surgery a volume and outcome relationship exists with respect to the prevalence of complications. Besides volume, cumulative experience is expected to improve outcomes. In accordance with global data, a case load of < 25 thyroidectomies per surgeon per year appears to identify a low-volume surgeon, while > 50 thyroidectomies per surgeon per year identify a high-volume surgeon. A center with a case load of > 100 thyroidectomies per year is considered high-volume. Thyroid cancer and autoimmune thyroid disease predict an increased risk of surgical morbidity and should be operated by high-volume surgeons. Oncological results of thyroid cancer surgery are significantly better when performed by high-volume surgeons.
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Affiliation(s)
- Kerstin Lorenz
- Department of Visceral, Vascular, and Endocrine Surgery, Martin-Luther University of Halle-Wittenberg, Ernst-Grube Strasse, 40 06120, Halle an der Saale, Germany.
| | - Marco Raffaeli
- U.O.C. Chirurgia Endocrina e Matabolica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
- Dipartimento Universitario di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Marcin Barczyński
- Department of Endocrine Surgery, Third Chair of General Surgery, Jagiellonian University Medical College, Kraków, Poland
| | - Leyre Lorente-Poch
- Secció del Servei de Cirurgia General de l'Hospital del Mar, Barcelona, Spain
| | - Joan Sancho
- Secció del Servei de Cirurgia General de l'Hospital del Mar, Barcelona, Spain
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Klee K, Eick C, Witlandt R, Gawaz M, Didczuneit-Sandhop B. Unilateral recurrent nerve palsy and cardiovascular disease - Ortner's syndrome. J Cardiol Cases 2016; 15:88-90. [PMID: 30279747 DOI: 10.1016/j.jccase.2016.10.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 09/29/2016] [Accepted: 10/26/2016] [Indexed: 11/25/2022] Open
Abstract
Recurrent laryngeal palsies are relatively common. Frequently, surgical procedures precede paresis. In rare cases a compression of the recurrent laryngeal nerve can be caused by enlarged cardiovascular structures. The phenomenon of compression of the left recurrent laryngeal nerve is explicitly designated as Ortner's syndrome, first described in 1897 by Norbert Ortner. Nowadays the compression of the right recurrent laryngeal nerve by cardiovascular structures is also associated with Ortner's syndrome. We report two cases of an 82- and a 71-year-old patient who presented with hoarseness and each right- and left-sided vocal cord paralysis for further diagnosis. The ear, nose, and throat (ENT) examinations revealed no clarifying findings besides the vocal cord palsy, so extensive imaging techniques were used. The cause of left-sided recurrent laryngeal nerve palsy was a penetrated aortic ulcer caused by large thrombosed aneurysm of the aortic arch. The right-sided paresis arose due to aneurysmal enlargement of the brachiocephalic trunk and an aneurysm of right subclavian artery. These cases demonstrate that interdisciplinary medical work is important. The internal medical presentation of a patient with hoarseness without ENT medical findings should be considered. <Learning objective: Ortner's syndrome is described as the compression of the recurrent laryngeal nerve of pathologically enlarged cardiac structures such as left atrium in mitral stenosis, aortic aneurysm, and others. It is a rare cause of vocal cord paralysis and thus hoarseness but should be considered as a differential diagnosis, particularly if the patient has a cardiac history.>.
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Affiliation(s)
- Katharina Klee
- Medizinische Klinik III, Kardiologie und Kreislauferkrankungen, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Christian Eick
- Medizinische Klinik III, Kardiologie und Kreislauferkrankungen, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Raphael Witlandt
- HNO, Gesichts- und Halschirurgie, Städtisches Klinikum Brandenburg, Brandenburg an der Havel, Germany
| | - Meinrad Gawaz
- Medizinische Klinik III, Kardiologie und Kreislauferkrankungen, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Birgit Didczuneit-Sandhop
- HNO, Gesichts- und Halschirurgie, Städtisches Klinikum Brandenburg, Brandenburg an der Havel, Germany
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Fukuhara T, Morisaki T, Kataoka H, Miyake N, Taira K, Koyama S, Fujiwara K, Kitano H, Takeuchi H. Modifications to the Fenestration Approach for Arytenoid Adduction Under Local Anesthesia. J Voice 2016; 31:490-494. [PMID: 27916331 DOI: 10.1016/j.jvoice.2016.10.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/21/2016] [Accepted: 10/26/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVE We modified the fenestration approach for arytenoid adduction to make it easier to perform the surgery. The aim of this study was to evaluate the usefulness of our modifications, which included (1) use of an Alexis wound retractor (Applied Medical) to secure the surgical field through a small incision, and (2) use of a 12-mm, 1/2 R, insert-molded taper needle with 3-0 nylon suture to prevent damage to the arytenoid cartilage. STUDY DESIGN This is a retrospective non-randomized observational cross-sectional study. METHODS We compared the operative time and skin incision length between the conventional fenestration approach and our modified procedure, and verified the improvement of patients' voice by our procedure. RESULTS Seven patients underwent the conventional fenestration approach for arytenoid adduction with type I thyroplasty, whereas nine patients underwent our modified fenestration approach for arytenoid adduction with type I thyroplasty. The skin incision length with our modifications (median, 3.0 cm; interquartile range [IQR], 3.0-4.0) was significantly shorter than with the conventional procedure (median, 5.0 cm; IQR, 4.3-5.8) (P = 0.001). The operative time with our modifications (median, 95 minutes; IQR, 90-100) was significantly shorter than without our modifications (median, 115; IQR, 100-130) (P = 0.035). All patients who underwent our modified fenestration approach for arytenoid adduction had maximum phonation time greater than 11 seconds after surgery. CONCLUSIONS Our two distinctive modifications reduced the operative time and skin incision length for the fenestration approach, which improved the procedure by making it less invasive.
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Affiliation(s)
- Takahiro Fukuhara
- Department of Otolaryngology-Head and Neck Surgery, Tottori University Faculty of Medicine, Yonago, Japan.
| | - Tsuyoshi Morisaki
- Center for Head and Neck Surgery, Kusatsu General Hospital, Kusatsu, Japan
| | - Hideyuki Kataoka
- Division of Medical Education, Department of Social Medicine, Tottori University Faculty of Medicine, Yonago, Japan
| | - Naritomo Miyake
- Department of Otolaryngology-Head and Neck Surgery, Tottori University Faculty of Medicine, Yonago, Japan
| | - Kenkichiro Taira
- Department of Otolaryngology-Head and Neck Surgery, Tottori University Faculty of Medicine, Yonago, Japan
| | - Satoshi Koyama
- Department of Otolaryngology-Head and Neck Surgery, Tottori University Faculty of Medicine, Yonago, Japan
| | - Kazunori Fujiwara
- Department of Otolaryngology-Head and Neck Surgery, Tottori University Faculty of Medicine, Yonago, Japan
| | - Hiroya Kitano
- Department of Otolaryngology-Head and Neck Surgery, Tottori University Faculty of Medicine, Yonago, Japan
| | - Hiromi Takeuchi
- Department of Otolaryngology-Head and Neck Surgery, Tottori University Faculty of Medicine, Yonago, Japan
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