scholarly journals Ultrasound-Guided Inferior Alveolar Nerve Block in the Horse: Assessment of the Extraoral Approach in Cadavers

2019 ◽  
Vol 36 (1) ◽  
pp. 46-51
Author(s):  
Jessica Purefoy Johnson ◽  
Robert Karl Peckham ◽  
Conor Rowan ◽  
Alan Wolfe ◽  
John Mark O’Leary
Keyword(s):  
Methylene Blue ◽  
Nerve Block ◽  
Inferior Alveolar Nerve ◽  
Lingual Nerve ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Inferior Alveolar Nerve Block ◽  
Success Rates ◽  
Ultrasound Guided ◽  
Dye Staining

Blinded techniques to desensitize the inferior alveolar nerve (IAN) include intraoral, angled, and vertical extraoral approaches with reported success rates of 100%, 73%, and 59%, respectively. It has not been determined whether an ultrasound-guided extraoral approach is feasible. Further, the fascicular nature of the inferior alveolar and lingual nerves of the horse has not been described. The objectives of this study were to describe a low-volume ultrasound-guided vertical extraoral inferior alveolar nerve block technique and to describe the fascicular nature of these nerves. An ultrasound-guided approach to the IAN was conducted with a microconvex transducer and an 18-G, 15-cm spinal needle using a solution containing iodinated-contrast and methylene blue dye. Accuracy was assessed by contrast visualized at the mandibular foramen on computed tomography (CT) and methylene blue dye staining of the nerves on gross dissection. Sections of inferior alveolar and lingual nerves were submitted for histological analysis. Assessment by CT and dissection determined success rates of 81.3% and 68.8%, respectively; 68.8% of injections had inadvertent methylene blue dye staining of the lingual nerve. Nerve histology revealed both the inferior alveolar and lingual nerves to be multifascicular in nature. Mean fascicle counts for the inferior alveolar and lingual nerves were 29 and 30.8, respectively. The technique is challenging and no more accurate than previously published blinded techniques. Any extraoral approach to the IAN is likely to also desensitize the lingual nerve.

scholarly journals Subzygomatic and infraorbital approaches for maxillary nerve blockade in cats’ cadaver

2018 ◽  
Vol 48 (4) ◽  
Author(s):  
José Ricardo Herrera Becerra ◽  
Tainor de Mesquita Tisotti ◽  
Maria Eduarda Baier ◽  
Ronaldo Viana Leite-Filho ◽  
Verônica Santos Mombach ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Nerve Block ◽  
Contralateral Side ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Maxillary Nerve ◽  
Significant Difference ◽  
Blinded Study ◽  
Maxillary Nerve Block ◽  
Nerve Staining

ABSTRACT: This study compared the accuracy of dye placement on the maxillary nerve by using the percutaneous subzigomatic (SBZ) and infraorbitary (IO) approaches in cats’ cadavers. A second aim was to compare the accuracy of dye placement on the maxillary nerve between different untrained anesthetists. This was a prospective, randomized, blinded study, performed in 40 heads obtained from feline cadavers. Three veterinarians (A, B and C) with no previous experience with the IO approach performed the experiments. The SBZ approach was randomly performed on one side of the head and the IO approach was performed in the contralateral side of the same head. For each approach, 0.2ml of 1% methylene blue dye was injected. Scores for length of nerve staining were as follows: 0 (failure), no staining; 1 (moderate), <6mm of nerve stained; and 2 (ideal), ≥6mm of nerve stained. Median scores (interquartile range) for the SBZ and IO approaches were 2.0 (0.3-2.0) and 1.0 (0.0-2.0), respectively. Scores for length of nerve staining were higher with the SBZ approach than the IO approach (P=0.016). Considering the scores for both the SBZ and IO approaches, there was a significant difference among the three veterinarians (P=0.002). Results of this study do not support the IO approach to perform a maxillary nerve block in cats. A greater accuracy of methylene blue dye placement was observed with the SBZ approach. A variable accuracy may exist between different veterinarians when performing a maxillary nerve block employing the SBZ and IO techniques in cats.

Ultrasound-guided Inferior Alveolar Nerve Block for Trismus in Temporomandibular Disorders: A Case Report

2020 ◽  
Author(s):  
Yuki Kojima ◽  
Ryozo Sendo ◽  
Sachi Ohno ◽  
Mitsutaka Sugimura
Keyword(s):  
Nerve Block ◽  
Dental Treatment ◽  
Temporomandibular Disorder ◽  
Inferior Alveolar Nerve ◽  
Mouth Opening ◽  
Masticatory Muscles ◽  
Inferior Alveolar Nerve Block ◽  
Ultrasound Guided ◽  
Anterior Teeth ◽  
Broad Term

Abstract Background: Temporomandibular disorder (TMD) is a broad term that encompasses pain and/or dysfunction of the masticatory musculature and TM joints (TMJs). Its most important feature is pain, followed by limited jaw movement, and joint sounds. When it progresses to a chronic condition, the symptoms are extremely difficult to manage, often requiring multiple interventions. Case presentation: Our patient, a woman in her 50s, developed TMD after a traffic accident that occurred 30 years previously. The patient presented with severe trismus due to TMJ pain (maximum mouth opening was 20 mm). She was scheduled to undergo extraction of a right lower molar and three upper anterior teeth owing to progressing caries. However, it was anticipated that the treatment would be difficult since the patient could not open her mouth adequately. Therefore, we considered relieving the trismus to facilitate dental treatment. Based on the findings, the cause of the TMD was considered to be pain in the masticatory muscles during mouth opening. Ultrasound-guided inferior alveolar nerve block (IANB) was performed on both sides using ropivacaine. Three minutes after the IANB, the pain during mouth opening disappeared and the maximum mouth opening improved to 40 mm. Dental treatment could be performed without difficulty, and the patient could maintain the mouth open throughout the treatment.Conclusions: Treatment methods for chronic TMD are limited and it is necessary to consider the exact aetiology before deciding upon a treatment option. In our case, ultrasound-guided IANB proved to be an effective modality for relieving TMD-related trismus.

scholarly journals Successful Localization of Abnormal Parathyroid Gland Using Ultrasound-Guided Methylene Blue Dye Injection in the Reoperative Neck

2014 ◽  
Vol 77 (S3) ◽  
pp. 1094-1097 ◽  
Author(s):  
Mehmet Haciyanli ◽  
Melike Bedel Koruyucu ◽  
Nezahat Karaca Erdoğan ◽  
Ozcan Dere ◽  
Erdem Sarı ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Parathyroid Gland ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Ultrasound Guided ◽  
Abnormal Parathyroid Gland

scholarly journals Success rates of the first inferior alveolar nerve block administered by dental practitioners

2016 ◽  
Vol 16 (2) ◽  
pp. 111 ◽  
Author(s):  
Yutthasak Kriangcherdsak ◽  
Somchart Raucharernporn ◽  
Teeranut Chaiyasamut ◽  
Natthamet Wongsirichat
Keyword(s):  
Nerve Block ◽  
Inferior Alveolar Nerve ◽  
Inferior Alveolar Nerve Block ◽  
Success Rates ◽  
Dental Practitioners

Ultrasound-Guided Methylene Blue Dye Injection for Parathyroid Localization in the Reoperative Neck

2013 ◽  
Vol 38 (1) ◽  
pp. 88-91 ◽  
Author(s):  
Leah Candell ◽  
Michael J. Campbell ◽  
Wen T. Shen ◽  
Jessica E. Gosnell ◽  
Orlo H. Clark ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Ultrasound Guided ◽  
Parathyroid Localization

scholarly journals Preoperative Axillary Ultrasound-guided Wire Localization and Lymphoscintigraphy for Sentinel Lymph Node Biopsy in Breast Cancer Patients

2021 ◽  
Author(s):  
Fezzeh Elyasinia ◽  
Homa Hemmasi ◽  
Karamollah Toolabi ◽  
Afsaneh Alikhassi ◽  
Mehran Sohrabi Maralani ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Methylene Blue ◽  
Lymph Node ◽  
Sentinel Lymph Node ◽  
Cancer Patients ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Breast Cancer Patients ◽  
Wire Localization ◽  
Ultrasound Guided

Background: Breast cancer has the highest incidence and mortality among female malignant tumors. Breast cancer with negative axillary lymph nodes has been diag- nosed mainly at an early stage. Sentinel lymph node biopsy (SLNB) is a standard screening technique for patients with early-stage breast cancer and clinically nega- tive lymph nodes. Lymphoscintigraphy (sentinel lymph node mapping) has been reg- ularly used as the standard method for SLNB. Today, ultrasound-guided wire locali- zation (USGWL) is a well-established technique with superior outcomes. Therefore, we attempted to determine whether preoperative UGWL and lymphoscintigraphy (blue dye and isotope injection) improve SLN detection and false-negative rate in breast cancer patients undergoing SLNB and identify clinical factors that may affect the diagnostic accuracy of axillary ultrasound (AUS). Methods: Between December 2018 and June 2019, 55 patients with clinical T1- 3N0 breast cancer eligible for an SLNB at Imam Khomeini Hospital in Tehran were included in our study. Tumor characteristics and demographic data were collect- ed by reviewing medical records and questionnaires prepared by our surgical team. The day before SLNB, all patients underwent ultrasound-guided wire localization of SLN. Lymphoscintigraphy was performed with an unfiltered 99mTc-labelled sulfur colloid peritumoral injection followed by methylene blue dye injection. The results were analyzed based on the permanent pathology report. Results: Among the 55 patients, 71.8% of SLNs were detected by wire localization, while 57.8% were found by methylene blue mapping and 59.6% by gamma probe detection. Compared with wire localization and isotope injection, the methylene blue dye technique had a low sensitivity (72.2%), while both wire localization and isotope injection reached 77.8%. The sensitivity, specificity, and accuracy of UGWL were 77.8%, 42.1%, and 65.4%, respectively. Otherwise, methylene blue dye and isotope injection accuracy was 47.3% and 50.1%, respectively. Furthermore, there was a significant relationship between BMI, tumor size, laterality, reactive ALN, and the accuracy of preoperative AUS. But there was no significant correlation between age, weight, height, tumor biopsy, tumor location, the time interval between methylene blue dye and isotope injection to surgery, and also the type of surgery to the accuracy of preoperative AUS. Conclusion: Preoperative UGWL can effectively identify SLNs compared to lym- phoscintigraphy (blue dye and isotope injection) in early breast cancer patients un- dergoing SLNB.

scholarly journals Efficacy of exclusive lingual nerve block versus conventional inferior alveolar nerve block in achieving lingual soft-tissue anesthesia

2017 ◽  
Vol 7 (2) ◽  
pp. 250 ◽  
Author(s):  
Sasikala Balasubramanian ◽  
Elavenil Paneerselvam ◽  
T Guruprasad ◽  
M Pathumai ◽  
Simin Abraham ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Nerve Block ◽  
Inferior Alveolar Nerve ◽  
Lingual Nerve ◽  
Inferior Alveolar Nerve Block
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