scholarly journals 3D visualization in otosurgery

2020 ◽  
Vol 19 (6) ◽  
pp. 38-49
Author(s):  
D. M. Kuz’min ◽  
◽  
A. A. Fedotova ◽  
Keyword(s):  
Middle Ear ◽  
3D Visualization ◽  
Research Work ◽  
Three Dimensional ◽  
Middle Ear Surgery ◽  
Ear Surgery ◽  
Task Load ◽  
Additional Information ◽  
Surgical Field ◽  
Nasa Task Load Index

The main priority of middle ear surgery is to create a safe and optimal view of the surgical field, as well as the most accurate visualization of anatomical structures, which is a driving factor in the evolution of otosurgery. The additional information provided by three-dimensional (3D) images has been proven to improve understanding of the temporal bone anatomy and improve the operator’s ability to assess associated diseases, thereby optimizing surgical management. In the presented experimental research work, a new technique for visualizing the surgical field is described, which improves the quality of the operator’s work and expands the possibilities of middle ear surgery. On the basis of the Chair of Otorhinolaryngology of the Mechnikov North-Western State Medical University a remote adapter for an endoscopic tube was created, which allows you to broadcast the video image received from its distal end to virtual reality glasses. For a detailed understanding of the principle of information transmission in a new three-dimensional reality, we used concepts such as disparity and stereopsis. All research results were evaluated according to the NASA Task Load Index scale. Analyzing the results of the experiment, in the conditions of three-dimensional visualization of the surgical field, a lower level of subjective workload was revealed, which was regarded as a positive effect of the realization of the phenomenon of stereopsis, when performing manipulations on the middle ear.

scholarly journals 3D visualization in otosurgery

2020 ◽  
Vol 19 (6) ◽  
pp. 38-41
Author(s):  
D. M. Kuz’min ◽  
◽  
A. A. Fedotova ◽  
Keyword(s):  
Middle Ear ◽  
3D Visualization ◽  
Research Work ◽  
Three Dimensional ◽  
Middle Ear Surgery ◽  
Ear Surgery ◽  
Task Load ◽  
Additional Information ◽  
Surgical Field ◽  
Nasa Task Load Index

The main priority of middle ear surgery is to create a safe and optimal view of the surgical field, as well as the most accurate visualization of anatomical structures, which is a driving factor in the evolution of otosurgery. The additional information provided by three-dimensional (3D) images has been proven to improve understanding of the temporal bone anatomy and improve the operator’s ability to assess associated diseases, thereby optimizing surgical management. In the presented experimental research work, a new technique for visualizing the surgical field is described, which improves the quality of the operator’s work and expands the possibilities of middle ear surgery. On the basis of the Chair of Otorhinolaryngology of the Mechnikov North-Western State Medical University a remote adapter for an endoscopic tube was created, which allows you to broadcast the video image received from its distal end to virtual reality glasses. For a detailed understanding of the principle of information transmission in a new three-dimensional reality, we used concepts such as disparity and stereopsis. All research results were evaluated according to the NASA Task Load Index scale. Analyzing the results of the experiment, in the conditions of three-dimensional visualization of the surgical field, a lower level of subjective workload was revealed, which was regarded as a positive effect of the realization of the phenomenon of stereopsis, when performing manipulations on the middle ear.

scholarly journals Effect of Dexmeditomidine on Isofluorane Consumption in Middle Ear Surgery

2020 ◽  
Vol 5 (2) ◽  
pp. 14-19
Author(s):  
Smriti Bandhu ◽  
Arunabh Mukharjee
Keyword(s):  
Heart Rate ◽  
Middle Ear ◽  
Normal Saline ◽  
Middle Ear Surgery ◽  
Ear Surgery ◽  
Mean Values ◽  
Isoflurane Concentration ◽  
Significant Difference ◽  
Surgical Field ◽  
End Tidal

Background: With the introduction of intentional hypotensive anesthesia in the surgical field to achieve a relatively bloodless surgical field along with the use of the operative microscope, it has revolutionized the middle ear surgery practice. Dexmedetomidine is a relatively new and potent α2 agonist prototype found efficient in rendering bloodless intra-surgical field and inducing controlled hypotension during the surgeries of the middle ear. The objective is to present prospective study was aimed at evaluating with and without dexmedetomidine infusion effect on end-tidal isoflurane concentration for lowering blood pressure by 30%, awakening time and quality of bloodless surgical field during middle ear surgical procedure. Subjects and Methods:54 patients who were to undergo middle ear surgery and had ASA I and II were randomly divided into the two groups. In Group I Dexmedetomidine was used and in Group II Normal saline. Effect of Dexmedetomidine infusion on end-tidal isoflurane concentration for lowering blood pressure by 30%, awakening time, quality of bloodless surgical field during middle ear surgical procedure, heart rate was evaluated. The data collected were statistically analyzed. Results: The mean values of the heart rate were statistically non-significant between the groups when recorded at the baseline, whereas, a statistically significant difference was seen in the values for heart rate intra-operatively. The mean values for heart rates were significantly higher for the placebo group. A significant difference in Isoflurane concentration was found with dexmedetomidine requiring a percentage of 0.6 0.4 and normal saline 1.8 0.5. Less bleeding was seen with dexmedetomidine. Conclusion:  Dexmedetomidine is a potent hypotensive agent which also reduces the requirement of Isoflurane compared  to the normal saline placebo. The use of dexmedetomidine is relatively safe and provide a relatively bloodless surgical field, hence, increasing efficacy, and improving visibility at the surgical site.

scholarly journals Otosurgery with the High-Definition Three-Dimensional (3D) Exoscope: Advantages and Disadvantages

2021 ◽  
Vol 10 (4) ◽  
pp. 777
Author(s):  
Małgorzata Wierzbicka ◽  
Witold Szyfter ◽  
Grażyna Greczka ◽  
Wojciech Gawęcki
Keyword(s):  
Middle Ear ◽  
Three Dimensional ◽  
Chronic Otitis Media ◽  
Clinical Indication ◽  
Middle Ear Surgery ◽  
Operating Microscope ◽  
High Definition ◽  
Advantages And Disadvantages ◽  
Primary Measurement ◽  
Surgical Field

Background: The aim of the study was to describe our initial experience with the high-definition three-dimensional (3D) exoscope for middle ear surgery versus the operating microscope. Methods: The study included 60 randomly chosen patients diagnosed with otosclerosis (n = 30) or chronic otitis media (n = 30) with a clinical indication for surgery. The primary measurement was the subjective estimation of quality of the visibility of the operating field provided by the 3D exoscope—VITOM-3D (Karl Storz, Tuttlingen, Germany) in comparison to the operating microscope. Results: All procedures, except for two (3.3%) converted to the microscope, were successfully completed using a 3D exoscope. In both stapedotomy and tympanoplasty, the exoscope was superior to the microscope during more superficial portions of the procedures. By contrast, in deeper areas of the middle ear, the exoscope provided significantly worse visibility, but usually not suboptimal. Both intraoperative bleeding and the narrow surgical field substantially reduced the visibility with the 3D exoscope in comparison to the microscope. Conclusions: Overall, our study shows that the 3D exoscope offers excellent, highly magnified, and well-illuminated high-definition images of the surgical field. However, our experience revealed several important limitations of this system, including decreased depth perception in deep areas of the tympanic cavity and reduced visibility in a difficult surgical field, with subsequent need to switch to an operating microscope in select cases.

Assessment of Stapes Mobility by Use of a Newly Developed Piezoelectric Ceramic Device

2000 ◽  
Vol 109 (5) ◽  
pp. 473-477 ◽  
Author(s):  
Kiyofumi Gyo ◽  
Eiji Yumoto ◽  
Hidemitsu Sato ◽  
Naoaki Yanagihara
Keyword(s):  
Middle Ear ◽  
Piezoelectric Ceramic ◽  
Chronic Otitis Media ◽  
The Other ◽  
Middle Ear Surgery ◽  
Measuring Range ◽  
Ear Surgery ◽  
Dental Cement ◽  
Surgical Field ◽  
The Mean

A piezoelectric device was developed for assessment of stapes mobility during middle ear surgery. The device comprises a pair of ceramic bimorph elements: one for activation of the stapes and the other to pick up the vibration as an electric output, which varies in accordance with the stapes mobility, ie, the inverse of the cochlear input impedance (Zsc). The device is compact and easily manipulated even in the narrow surgical field of the ear. However, the measuring range is restricted to between 1 and 10 kHz. Measurement of Zsc was conducted with this device in 5 ears of 5 dogs. The mean magnitude of Zsc increased with frequency in the range from 1 to 10 kHz: 0.95 megohm at 1 kHz and 8.8 megohms at 10 kHz. After fixation of the stapes with dental cement, the magnitude increased to more than 10 megohms, except at 1 kHz. The results suggest that the device is useful in detecting decreases in stapes mobility in patients with chronic otitis media.

scholarly journals Hemodynamic effect of local infiltrative 2% lidocaine adrenaline anesthesia in general balanced anesthesia during middle ear surgery

2008 ◽  
Vol 55 (1) ◽  
pp. 93-97
Author(s):  
B.M. Majstorovic ◽  
R.B. Radulovic ◽  
D.A. Kastratovic ◽  
V.B. Djukic ◽  
N.P. Popovic ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Middle Ear ◽  
Randomized Study ◽  
Hemodynamic Effect ◽  
Middle Ear Surgery ◽  
Ear Surgery ◽  
Surgical Incision ◽  
Parametric Data ◽  
Balanced Anesthesia ◽  
Surgical Field

Hemodynamic effect of different techniques and type of anesthesia are defined. The volume of reduced hemorrhage in surgical field is debatable, without any definite conclusion. The objective of the study is to investigate the effects of local infiltrative anesthesia with adrenaline during general balanced anesthesia and nitroglicerol on blood pressure and hemorrhage reduction in middle ear operations. Prospective, randomized study included 58 adult patients planned for the otorhinolaryngological surgery. Studied group of patient (n 30) planned for middle ear operations. Before incision surgeon was administered local infiltrative anesthesia using 2% lidocaine with adrenaline (1:200000) The controls group (n 28), planned for other surgery had no local infiltrative anesthesia with adrenaline. Hemodinamic parameters were monitored before surgical incision and 30 minutes after that. Surgeon?s verbal reply on hemorrhage reduction during surgery was recorded. Statistical analysis of parametric data was carried out by Mann-Whitney sum test. Blood pressure and heart rate was not different between the two groups. But, intraoperatively, the study showed lowering of systolic and diastolic blood pressure. This mode of treatment and surgeons verbal reply confirmed that local infiltrative anesthesia with adrenaline under balanced anesthesia had no effect on hemorrhage reductionin surgical field.

Taste Change after Middle Ear Surgery

2009 ◽  
Vol 52 (5) ◽  
pp. 401 ◽  
Author(s):  
Young-Ho Lee ◽  
Mi-Kyung Ye ◽  
Im-Hee Shin
Keyword(s):  
Middle Ear ◽  
Middle Ear Surgery ◽  
Ear Surgery
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