Pocket mobile smartphone system for the point-of-care submandibular ultrasonography

Wojtczak, Jacek A.; Bonadonna, Peter

doi:10.1016/j.ajem.2012.09.013

Cited by 44 publications

(27 citation statements)

References 9 publications

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“…Ultrasound is comparable to computerized tomography and magnetic resonance imaging when used to evaluate upper airway and, at the same time, is faster, cheaper and non-invasive [25]. For scanning, we used the method described by Wojtczak et al [2], which forms a focused point-of-care ultrasonography algorithm of the airway [2,26].…”

Section: Discussionmentioning

confidence: 99%

Ultrasound-based assessment of hyomental distances in neutral, ramped, and maximum hyperextended positions, and derived ratios, for the prediction of difficult airway in the obese population: a pilot diagnostic accuracy study

Petrișor

Szabó

Constantinescu³

et al. 2018

Anaesthesiol Intensive Ther

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Background: Ultrasonography-assessed hyomental distance (HMD) ratio has been found to discriminate between obese patients with Cormack-Lehane grades 1 or 2 vs. those with grades 3 or 4. The aim of our study is to evaluate the performance of the HMD evaluated ultrasonographically in neutral, ramped, and maximum hyperextended positions, as well as for the ratios obtained by dividing the HMD in the ramped position to that in the neutral position (HMDR1) and by dividing the HMD in maximum hyperextension to that in the neutral position (HMDR2), in order to predict the occurrence of Cormack-Lehane grades 3 or 4 during direct laryngoscopy. Methods: Ultrasound measurements were performed preoperatively in 25 patients with morbid obesity, measuring the HMD in the neutral, ramped, and maximum hyperextended positions. Pre-epyglotic soft tissue thickness, Mallampati and upper lip bite test scores were recorded. Cormack-Lehane grading was considered as an outcome variable in the Receiver Operating Characteristics curve analysis. Results: HMD in the neutral, ramped and maximum hyperextended positions presented similar sensitivities, 100% [39.8-100.0]. For HMD, specificity was 42.86% [21.8-66.0] in the neutral position, 61.9% [38.4-81.9] in the ramped postion, and 71. 4% [47.8-88.7] in the maximum hyperextended position. For HMDR1, the cut-off value was 1.12. This threshold provides 75% [19.4-99.4] sensitivity and 76. 2% [52.8-91.8] specificity. For HMDR2, a cut-off value of 1.23 provides 100% [39.8-100.0] sensitivity and 90.5% [69.6-98.8] specificity. Conclusion: HMDR2 seems to have superior diagnostic accuracy in predicting difficult laryngoscopy in the obese population compared to HMDR1, as well as compared to the HMD in the neutral, ramped, and maximum hyperextended positions.

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Section: Discussionmentioning

confidence: 99%

Ultrasound-based assessment of hyomental distances in neutral, ramped, and maximum hyperextended positions, and derived ratios, for the prediction of difficult airway in the obese population: a pilot diagnostic accuracy study

Petrișor

Szabó

Constantinescu³

et al. 2018

Anaesthesiol Intensive Ther

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“…Recently, a portable, pocket-size ultrasound (US) device was released on the market. This type of device has been tested in applications in the areas of anaesthesiology, cardiology, critical care, dermatology, emergency medicine, neonatology, obstetrics and gynaecology, vascular surgery and rheumatology [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Applicability of pocket ultrasound during the first trimester of pregnancy.

et al. 2015

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Aim: To determine the applicability of pocket ultrasound as a complementary method for clinical evaluation during the first trimester of pregnancy. Material and methods: A prospective cross-sectional study was conducted with 86 pregnant women attended in an emergency. The same operator performed the first examination with pocket device Vscan (General Electric, Vingmed Ultrasound, Horten, Norway) and then repeated the exam using a traditional handset high resolution Voluson 730 Expert (General Electric Healthcare Ultrasound, Milwaukee, WI, USA). Data were recorded with individual diagnoses by means of yes/no binary as the visualization of variables: gestational sac, embryo, embryo heartbeat, topical or ectopic pregnancy. Concordance was calculated using the kappa coefficient with its respective 95% confidential intervals (CI). Results: There was no disagreement between the methods when compared the pocket and conventional ultrasounds. The best comparative result between the devices was as the visualization of the embryo heartbeat with kappa coefficient of 0.84 (95% CI 0.76 to 0.89). However, the pocket ultrasound had a low correlation for diagnosis of ectopic pregnancy, with kappa coefficient of −0.02 (95% CI −0.23 to 0.19). The smaller structure visualized and studied using the pocket ultrasound was an embryo of 3.4 mm. Conclusions: The method of pocket ultrasound has the potential to become a complementary and easy access for diagnostic tool in obstetric patients during the first trimester. However, in ectopic pregnancy cases the diagnosis should be realized by conventional ultrasound.

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“…In the described case, echocardiography revealed a tight narrowing of the pulmonary artery, which was not visible at CT angiography. Therefore, the necessity of easily accessible portable ultrasonography, including heart imaging, is being raised in the literature, as the examination performed even using a simple, mobile apparatus frequently allows to make initial diagnosis [7,8]. In the described case, echocardiography allowed to diagnose elevated pressure in the right ventricle and in the part of the pulmonary artery before the narrowing.…”

Section: Discussionmentioning

confidence: 97%

Pulmonary Artery Stenosis Due to Embryonal Carcinoma with Primary Mediastinal Location

Grzegorczyk¹,

Dybowska²,

Kuca³

et al. 2015

Advances in Respiratory Medicine

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Pulmonary artery stenosis due to embryonal carcinoma with primary mediastinal locationUcisk pnia płucnego przez nowotwór zarodkowy o pierwotnej lokalizacji śródpiersiowejThe authors declare no finacial disclosure AbstractA 29-year old man was admitted to the intensive care unit after losing consciousness. On physical examination, a loud systolic murmur over the heart was found. Echocardiography revealed narrowing of pulmonary artery with high pressure gradient. Computed tomography of the chest revealed the presence of large tumour localised in the upper anterior mediastinum. Due to the risk of total closure of the pulmonary artery, interventional mediastinotomy was performed and diagnosis of carcinoma embryonale was established. Subsequent chemotherapy (BEP regimen) has brought regression of tumour and significant improvement in haemodynamic parameters (relief of pressure gradient in pulmonary artery). During the second surgery, the resection of all accessible tumour mass together with marginal resection of the right upper lobe was performed. No signs of cardiac or great vessels infiltration was found. Histopathologic examination revealed the necrotic masses and neoplastic foci diagnosed as teratoma immaturum. In a four-month follow-up the patient's condition remained good. The patient is still under the care of both oncological and cardiological specialists. Thus far he has not required further chemotherapy. Holter ECG monitoring revealed no arrhythmia, but the patient is still treated with mexiletine. The patient is planning to return to work.

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Pocket mobile smartphone system for the point-of-care submandibular ultrasonography

Cited by 44 publications

References 9 publications

Ultrasound-based assessment of hyomental distances in neutral, ramped, and maximum hyperextended positions, and derived ratios, for the prediction of difficult airway in the obese population: a pilot diagnostic accuracy study

Ultrasound-based assessment of hyomental distances in neutral, ramped, and maximum hyperextended positions, and derived ratios, for the prediction of difficult airway in the obese population: a pilot diagnostic accuracy study

Applicability of pocket ultrasound during the first trimester of pregnancy.

Pulmonary Artery Stenosis Due to Embryonal Carcinoma with Primary Mediastinal Location

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