Autor: Gupta, Dheeraj - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Investigation of Infrared Thermography of Cortical Bone Grinding in Neurosurgery
Autorzy:: Babbar, Atul
Jain, Vivek
Gupta, Dheeraj
Goyal, Kapil Kumar
Prakash, Chander
Saxena, Kuldeep Kumar
Kumar, Sandeep
Bartoszuk, Marian
Tematy:: biomimetic
bone grinding
Infrared thermography
thermal analysis
surfaces
burr; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2201892.pdf Link otwiera się w nowym oknie
Opis:: In this work, an effort has been made to determine the effect of different shape surgical burr on the thermogenesis during bone osteotomy. The abrasion during bone grinding leads to heat generation and subsequently rise in the temperature which may have adverse effects such as osteonecrosis, blood coagulation in the carotid artery, damage to sciatic nerves, and even loss of vision. So, mitigating the temperature rise during bone grinding is of paramount importance. Especially, in endoscopic endonasal approach (EEA) in which nasal passage is used for the inserting the grinding burr and reaching the target region. The miniature abrasion can significantly increase the temperature and hence leads to the thermal damage to nerves surrounding the temporal and frontal lobe. These parts of the brain controls movement, problem solving ability, behavior, personality mood, hearing, language, memory, speech, breathing, heart rate, consciousness etc. Furthermore, neurosurgeons rely on their personal surgical experience for estimating the temperature rise during grinding. However, this is much difficult for novice surgeons. Therefore, it becomes critically important to preserve the soft neural tissues and nerves amid bone grinding. To overcome these concerns, infrared thermography technique has been exploited to determine the possibility of thermogenesis during bone grinding by measuring the temperature rise and its distribution using infrared camera. All experiments have been carried at a constant set of process variables. The grinding zone is continuously flooded with the irrigating solution to remove the heat and bone debris away from the grinding site. It has been observed that convex tool shape generated lower maximum temperature i.e. 46.03 ℃ among all tools. The temperature produced by the convex tool is 12.06% lower than spherical tool, 33.39% lower than cylindrical tool, and 10.55% lower than tree-shape tool. The results showed that convex shape tool could prevent thermal necrosis in the bone as temperature caused (i.e. 46 ℃) was less than the threshold limit of osteonecrosis. Thermograms revealed that infrared thermography technique could be implemented for the in-vivo surgical operations for the measurement of temperature during bone grinding.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evaluation of ultrasound guided measurement of tongue thickness in predicting difficult intubation in obese patients
Autorzy:: Singh, Dheeraj
Kachru, Nisha
Gupta, Jyoti
Saraswat, Namita
Yadav, Rupesh
Tematy:: Difficult intubation
obesity
tongue thickness
ultrasound; Pokaż więcej
Wydawca:: Towarzystwo Pomocy Doraźnej
Powiązania:: https://bibliotekanauki.pl/articles/55994163.pdf Link otwiera się w nowym oknie
Opis:: INTRODUCTION: Managing the airway presents a significant challenge in anesthesia, particularly in obese patients, and is a leading cause of morbidity and mortality associated with anesthesia. Although increased tongue thickness in the obese is generally assumed to be associated with a difficult intubation. So that aim of this study was to evaluate ultrasound guided measurement of tongue thickness in predicting difficult tracheal intubation in obese patients. MATERIALS AND METHODS: Study included 45 patients aged 18 to 65 of any gender. These patients, classified as American Society of Anesthesiologists Grade I and II, had a Body mass index exceeding 30 kg/m2. Tongue thickness was evaluated using ultrasound, measuring the distance from the tongue surface to the submental skin, while also documenting the modified Mallampatti score (MMP). Number of attempts for intubation, time taken for intubation and use of any alternate device or technique were noted. RESULTS: The tongue thickness cutoff for predicting difficult intubation was determined to be 6.5 cm. The Receiver operating characteristic (ROC) curve analysis revealed an AUC (Area under the ROC Curve) of 0.920 (Standard Error: 0.230, 95% Confidence interval: 0.850-0.950) for a cutoff value exceeding 6.5 cm, indicating excellent predictive capability. Tongue thickness demonstrated a combined diagnostic accuracy of 95.5%, with sensitivity and specificity of 75% and 97.5% respectively. MMP grade was compared with tongue thickness, a positive correlation was seen with co-efficient of 0.45. There was a statistically significance (p value <0.001). CONCLUSIONS: This study concludes that ultrasound guided measurement of tongue thickness > 6.5 cm can reliably predict difficult tracheal intubation in obese patients.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evaluation of ultrasound guided measurement of tongue thickness in predicting difficult intubation in obese patients
Autorzy:: Kachru, Nisha
Singh, Dheeraj
Yadav, Rupesh
Gupta, Jyoti
Saraswat, Namita
Wydawca:: Towarzystwo Pomocy Doraźnej
Cytata wydawnicza:: Singh D, Kachru N, Gupta J, Saraswat N, Yadav R. Evaluation of ultrasound guided measurement of tongue thickness in predicting difficult intubation in obese patients. Crit. Care Innov. 2024; 7(4): 23-31. DOI: 10.32114/CCI.2024.7.4.23.31
Opis:: INTRODUCTION: Managing the airway presents a significant challenge in anesthesia, particularly in obese patients, and is a leading cause of morbidity and mortality associated with anesthesia. Although increased tongue thickness in the obese is generally assumed to be associated with a difficult intubation. So that aim of this study was to evaluate ultrasound guided measurement of tongue thickness in predicting difficult tracheal intubation in obese patients. MATERIALS AND METHODS: Study included 45 patients aged 18 to 65 of any gender. These patients, classified as American Society of Anesthesiologists Grade I and II, had a Body mass index exceeding 30 kg/m2. Tongue thickness was evaluated using ultrasound, measuring the distance from the tongue surface to the submental skin, while also documenting the modified Mallampatti score (MMP). Number of attempts for intubation, time taken for intubation and use of any alternate device or technique were noted. RESULTS: The tongue thickness cutoff for predicting difficult intubation was determined to be 6.5 cm. The Receiver operating characteristic (ROC) curve analysis revealed an AUC (Area under the ROC Curve) of 0.920 (Standard Error: 0.230, 95% Confidence interval: 0.850-0.950) for a cutoff value exceeding 6.5 cm, indicating excellent predictive capability. Tongue thickness demonstrated a combined diagnostic accuracy of 95.5%, with sensitivity and specificity of 75% and 97.5% respectively. MMP grade was compared with tongue thickness, a positive correlation was seen with co-efficient of 0.45. There was a statistically significance (p value <0.001). CONCLUSIONS: This study concludes that ultrasound guided measurement of tongue thickness > 6.5 cm can reliably predict difficult tracheal intubation in obese patients.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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