Modified hydrodissection as a safe and effective treatment modality for rotating lens in cataract surgery

We describe in this article an effective and safe modification of hydrodissection technique in cataract surgery. The hydrodissection cannula tip is inserted into the capsulorhexis edge near the primary incision, with the cannula elbow resisting on the upper lip of the primary incision. Hydrodissection is then completed effectively and safely by squirting fluid to cleave the lens and capsular. This modified hydrodissection technique can be performed with high reproducibility and in a short practice period.

"Leverage pry-off method" for effective prevention of thermal injury during microwave ablation of benign thyroid nodules / 南方医科大学学报

OBJECTIVE@#To assess the safety and efficacy of"leverage pry-off method"for preventing thermal injury during microwave ablation of benign thyroid nodules.@*METHODS@#From July, 2017 to September, 2019, a total of 348 patients with benign thyroid nodules underwent ultrasound-guided microwave ablation. For protecting from thermal injury during the ablation, "hydrodissection technique" was used in 174 of the patients (admitted from July, 2017 to August, 2018) and "leverage pry-off method" in the other 174 patients (admitted from September, 2018 to September, 2019). All the patients were followed up for 1 to 12 months after the operation for observation of severe complications and nodular residues.@*RESULTS@#Ultrasound-guided microwave ablation was completed in all the 348 patients. The most common severe complication associated with the ablation was voice change, occurring in 3 cases (1.7%) in "hydrodissection technique" group and in 4 (2.3%) in the "leverage pry-off method" group, showing no significant difference between the two groups (P>0.05). During the follow-up, no significant difference was found in the rate of nodular residues between the "hydrodissection technique" group and "hydrodissection technique" group (9.8% vs 10.9% (P>0.05).@*CONCLUSIONS@#The "leverage pry-off method" is simple and effective for preventing thermal injury during microwave ablation of benign thyroid nodules.

Posterior polar cataract: Hydrodissection and nucleus rotation in manual small-incision cataract surgery not a taboo with proper fluidics

A posterior polar cataract is a discoid posterior polar plaque-like cataract with a thin and fragile to absent posterior capsule with adherent acellular opacity to the capsule reported in the literature. It is a stationary or slowly progressive opacity. A higher risk of complications such as posterior capsular tear and nucleus drop makes this a challenging surgery. The techniques described in the literature include bimanual irrigation aspiration, leaving the plaque for later Yag, bimanual micro phaco, Lambda technique with dry aspiration, Phaco if opacity <4 mm and soft nucleus, pars plana vitrectomy (PPV), pars plana lensectomy (PPL) if opacity >4 mm and soft nucleus, intra-capsular cataract extraction (ICCE) and scleral fixated intraocular lens (IOL) if opacity >4 mm with the hard nucleus, viscodissection, 3 ports PPL, PPV, low parameters phaco, modified epinucleus removal, inverse horse-shoe technique, standard phacoemulsification, chip and flip for soft cataracts, stop and chop for hard cataracts, layer-by-layer phacoemulsification, standard lens aspiration, pars plicata posterior vitrecto-rhexis, manual small-incision cataract surgery, and conventional extracapsular extraction. A posterior capsule rupture rate of 0 to 36% is reported in different series for cataract extraction. To prevent this dreaded complication, surgeons used many modifications. Minimal hydrodissection in posterior polar cataract extraction was described by Fine et al. The authors describe a technique of low flow manual small-incision cataract surgery with minimal hydrodissection and nucleus rotation with no associated posterior capsule rent. This demonstrates that if the fluidics is understood and corrected, then minimal hydrodissection and nucleus rotation is not taboo in posterior polar cataract extraction by manual small-incision cataract surgery.

Hidrodisección guiada por ultrasonido para el tratamiento de pacientes con sindrome del tunel carpiano / Ultrasound-Guided hydrodissection for treatment of Patients with Carpal Tunnel Syndrome

El estudio tuvo como objetivo comparar el grupo de hidrodisección de solución salina normal guiada por ultrasonido más esteroides y el grupo de hidrodisección de solución salina normal guiada por ultrasonido sola en pacientes con síndrome del túnel carpiano (STC), y determinar su relevancia clínica en relación con los resultados del tratamiento. Realizamos 60 hidrodisecciones guiadas por ecografía con solución salina normal con y sin inyecciones de corticosteroides en 51 pacientes con STC y evaluamos los resultados de la ecografía antes y después 21. Evers S, Thoreson AR, Smith J, Zhao C, Geske JR, Amadio PC. Ultrasound-guided hydrodissection decreases gliding resistance of the median nerve within the carpal tunnel. Muscle Nerve 2017 June 16. doi: 10.1002/mus.25723. 22. Smith J, Wisniewski S, J, Finnoff JT, Payne JM. Sonographically Guided Carpal Tunnel Injections. J Ultrasound Med 2008;27:1485-1490. 23. Trescott AME. Peripheral Nerve Entrapments: Clinical Diagnosis and Management. Switzerland: Springer International Publishing; 2016 24. Marshall S, Tardif G, Ashworth N. Local corticosteroid injection for carpal tunnel syndrome. Cochrane Database Syst Rev 2002(4). 25. Atroshi I, Flondell M, Hofer M, Ranstam J. Methyprednisolone Injections for the Carpal Tunnel Syndrome: A randomized Placebo-Controlled Trial. Ann Int Med 2013;159:309-317. 26. Peters-Veluthamaningal C, Winters JC, Groenier KH, Meyboom-de Jong B. Randomised controlled trial of local corticosteroid injections for carpal tunnel syndrome in general practice. BMC family practice 2010;11:54. 27. Wu YT, Ho TY, Chou YC, Ke MJ, Li TY, Tsai CK, et al. Six-month efficacy of perineural dextrose for carpal tunnel syndrome: A prospective, randomized, double-blind, controlledtrial. Mayo Clinic proceedings 2017;92:1179-1189. 28. Kirwan J. Is there a place for intra-articular hyaluronate in osteoarthritis of the knee? The Knee 2001;8:93-101. 29. Saltzman BM, Leroux T, Meyer MA, Basques BA, Chahal J, Bach BR, Jr., et al. The therapeutic effect of intra-articular normal saline injections for knee osteoarthritis: Ameta-analysis of evidence level 1 studies. The American journal of sports medicine 2017;45:2647-2653. 30. Padua L, Padua R, Aprile I, Pasqualetti P, Tonali P. Multiperspective follow-up of untreated carpal tunnel syndrome: a multicenter study. Neurology. 2001;56(11):1459­ 66 31. Ortiz-Corredor F, Enriquez F, Diaz-Ruiz J, Calambas N. Natural evolution of carpal tunnel syndrome in untreated patients. Clinical neurophysiology: official journal of the International Federation of Clinical Neurophysiology 2008;119:1373-1378 32. Gordon T, Brushart TM, Chan KM. Augmenting nerve regeneration with electrical stimulation. Neurol Res 2008; 30:1012- 1022. 33. Aulisa L, Tamburrelli F, Padua R, Romanini E, Lo Monaco M, Padua L. Carpal tunnel syndrome: Indication for surgical treatment based on electrophysiologic study. J Hand Surg Am 1998; 23:687-691. 34. Peters-Veluthamaningal C, Winters JC, Groenier KH, Meyboom- de Jong B. Randomised controlled trial of local corticosteroid injections for carpal tunnel syndrome in general practice. BMC Fam Pract. 2010;11:54. 35. Girlanda P, Dattola R, Venuto C, Mangiapane R, Nicolosi C, Messina C. Local steroid treatment in idiopathic carpal tunnel syndrome: short- and longterm efficacy. J Neurol. 1993; 240(3):187- 190. 36. Karadas¸ Ö, Tok F, Ulas¸ UH, Odabas¸i Z. The effectiveness of triamcinolone acetonide vs. procaine hydrochloride injection in the management of carpal tunnel syndrome: a double blind randomized clinical trial. Am J Phys Med Rehabil. 2011; 90(4):287-292. 128 LA PRENSA MÉDICA ARGENTINA Ultrasound-Guided hydrodissection for treatment of Patients with Carpal Tunnel Syndrome V.107/Nº 2 de la inyección. Clasificamos estas inyecciones en dos grupos según la solución salina normal más corticosteroide (grupo de esteroides). solución salina normal (grupo de control) y también registramos datos clínicos que incluyen el sexo, la edad, el lado de la inyección, el peso corporal y la duración de las molestias relacionadas con el STC antes de la inyección. Los resultados se midieron mediante la escala analógica visual que se asignó para evaluar el resultado primario. Los resultados secundarios se evaluaron mediante el cuestionario del síndrome del túnel carpiano de Boston, el área transversal del nervio mediano y estudios electrofisiológicos. La evaluación se realizó antes de la inyección y 1, 3 y 6 meses después de la inyección, y se comparó el alivio de los síntomas de los pacientes que recibieron la inyección de solución salina normal y de esteroides. Comparamos las hidrodisecciones con la solución salina normal y las inyecciones de corticosteroides; los datos clínicos, la preinyección de CSA-MN en la entrada del túnel carpiano y las puntuaciones de BCTQ antes de la inyección no mostraron diferencias significativas entre los grupos (p> 0,05). Todos los pacientes (datos de 30 muñecas en cada grupo) completaron el estudio. En comparación con el grupo de control, en todos los momentos posteriores a la inyección, ambos grupos tuvieron una reducción significativa del dolor y la discapacidad, una mejoría en las medidas de respuesta electrofisiológica y una disminución del área transversal del nervio mediano. Nuestro estudio revela que la solución salina normal guiada por ecografía con y sin hidrodisección de corticosteroides tiene un efecto terapéutico en los pacientes con STC. Se demostró que la hidrodisección nerviosa es potencialmente beneficiosa para los pacientes con STC antes de la cirugía. La hidrodisección es un procedimiento simple y mínimamente invasivo que se puede realizar utilizando únicamente NS. Además, en comparación con la inyección a ciegas, la hidrodisección bajo guía ecográfica puede reducir las posibilidades de lesión nerviosa.

The study aimed to compare Ultrasound-Guided Normal saline plus steroid hydrodissection group and Ultrasound-Guided normal saline alone hydrodissection group in patients with carpal tunnel syndrome (CTS), and to determine their clinical relevance in relation to treatment outcomes. We performed 60 US-guided hydrodissections Normal saline with and without corticosteroid injections in 51 patients with CTS and evaluated their pre- and post-injection US findings. We categorized these injections into two groups based on the normal saline plus corticosteroid (steroid group). normal saline (control group) and we also recorded clinical data including gender, age, side of injection, BW, and the duration of pre-injection CTS related discomfort. The outcomes were measured using the visual analog scale was assigned to assess the primary outcome. The secondary outcomes were assessed using the Boston Carpal Tunnel Syndrome Questionnaire, cross-sectional area of the median nerve, and electrophysiological studies. The assessment was performed prior to injection, and 1, 3, and 6 months' post-injection, and the symptom relief for the patients receiving normal saline and steroid injection were compared. We compared hydrodissections with normal saline and corticosteroid injections the clinical data, pre injection CSA-MN at the inlet of the carpal tunnel, and pre-injection BCTQ scores showed no significant intergroup differences (p > 0.05). All patients (data from 30 wrists in each group) completed the study. Compared both the control group, at all post-injection time points, both groups had a significant reduction in pain and disability, improvement on electrophysiological response measures, and decreased cross-sectional area of the median nerve. Our study reveals that ultrasound-guided Normal saline with and without corticosteroid hydrodissection has therapeutic effect in patients CTS. Nerve hydrodissection was shown to be potentially beneficial for CTS patients' pre-surgery. Hydrodissection is a simple, minimally invasive procedure that can be performed using only NS. In addition, compared to blind injection, hydrodissection under ultrasound guidance can lower the chances of nerve injury.

Intraoperative optical coherence tomography and proportional reflux hydrodissection-guided pars plana vitrectomy for complex severe proliferative diabetic retinopathy

The study describes the technique of combining microscope-integrated optical coherence tomography (mi-OCT) and proportional reflux hydrodissection (PRH) during pars plana vitrectomy (PPV) in eyes with complex proliferative diabetic retinopathy (PDR) including tractional retinal detachment (TRD), combined retinal detachment (CRD), and taut posterior hyaloid membrane (TPHM). In this technique, PRH is used to create tissue planes between fibrovascular adhesions in areas identified using mi-OCT for insinuating the vitrector, enabling tissue dissection and release of traction. About 46 patients were operated using this technique. 34 eyes had TRD, 9 eyes had CRD, and 3 eyes were diagnosed with TPHM. A second instrument was used only in nine eyes. None of the eyes required use of intraocular scissors. Iatrogenic breaks occurred in six eyes. All patients had successful reattachment at 3-month follow-up. Thus, combination of mi-OCT and PRH is useful incomplete fibrovascular tissue dissection during PPV for complex PDR cases.

Protective effect of laparoscopic removal of water and suture hemostasis on ovarian function / 中国综合临床

Objective@#To investigate the protective effect of laparoscopic water separation and removal combined with suture hemostasis on ovarian reserve function after bilateral ovarian endometriotic cyst (OEC) stripping.@*Methods@#From January 2016 to January 2018, 60 patients with bilateral ovarian endometriosis cystectomy underwent laparoscopic surgery in the Department of Obstetrics and Gynecology, Jiading Hospital of traditional Chinese medicine.According to the random number table method, they were divided into study group (water separation and stripping combined suture hemostasis group) and the control group (direct stripping combined with electrocoagulation hemostasis group), 30 cases in each group.The changes of operation time, hemoglobin level before and after operation and the levels of follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2) and anti Mullerian hormone (AMH) were compared between the two groups.@*Results@#There was no significant difference in operation time (47.52 ±10.11) min, hemoglobin decrease (0.55 ±0.26) g/L, hospital stay (6.1 ±0.3) d, control group (48.01 ±10.24) min, hemoglobin decrease (0.56 ±0.25) g/L and hospitalization time (6.2 ±0.4) d before and after operation (t=0.056, 0.964, 0.863, all P>0.05). The levels of FSH, E2, LH and AMH in the study group before operation were (6.15 ±2.31) U/L, (152.41 ±41.40) nmol/L, (5.44 ±1.52) U/L and (2.21 ±0.13) μg/L, respectively.One month after operation, they were(6.21±2.24) U/L, (150.63±40.33) nmol/L, (5.13±1.58) U/L, (2.18±0.16) μg/L, respectively.Three months after operation, they were (6.52±2.41) U/L, (149.57±42.37) nmol/L, (5.30±1.45) U/L, (2.17± 0.15) μg/L, respectively.Six months after operation, they were (6.53±2.44) U/L, (151.36±41.54) nmol/L, (4.98±1.61) U/L, (2.20±0.08) μg/L, respectively.The levels of FSH, E2, LH and AMH in the control group before operation were (6.14±2.21) U/L, (153.31±40.39) nmol/L, (5.51±1.46) U/L, (2.23±0.13) μg/L, respectively.One month after operation, they were (8.11±2.44) U/L, (131.43±41.23) nmol/L, (5.92±1.64) U/L, (1.58±0.14) μg/L, respectively.Three months after operation, they were (8.42±2.35) U/L, (135.67±40.38) nmol/L, (6.12±1.51) U/L, (1.54±0.16) μg/L, respectively.Six months after operation, they were (9.17±2.64) U/L, (133.66±40.44) nmol/L, (6.28±1.74) U/L, (1.51±0.13) μg/L, respectively.There was no significant difference in the levels of FSH, E2, LH and AMH between the two groups (all P>0.05). There was significant difference between the preoperative FSH level and the postoperative 1, 3, 6 months in the control group (all P<0.05); there was significant difference between the preoperative E2 level and the postoperative 1 month in the control group (P<0.05); there was statistical significance between the preoperative AMH level and the postoperative 1, 3 months in the control group (all P<0.05). The levels of FSH, LH, E2 and AMH in the study group were significantly higher than those in the control group (all P<0.05).@*Conclusion@#Laparoscopic hydrodissection combined with suture hemostasis does not increase the operation time and the amount of bleeding, and does not affect the ovarian reserve function after operation.

Efficacy and safety of a combination of hydrodissection and radiofrequency ablation therapy for benign thyroid nodules larger than 2 cm: A retrospective study

Background: Radiofrequency ablation (RFA) is a safe, highly effective, and novel method used to treat benign thyroid nodules. This study aimed to evaluate the efficacy and safety of a combination of RFA and hydrodissection for treating benign thyroid nodules larger than 2 cm. Materials and Methods: The data of 137 patients with at least one thyroid nodule ≥2 cm who underwent RFA combined with hydrodissection at our medical center from November 2014 to October 2016 were analyzed. Ultrasound-guided RFA was applied to 532 nodules, including 139 nodules ≥2 cm and 393 nodes <2 cm. Results: The volumes of thyroid nodules, complications, and changes in thyroid function were analyzed. Ablation treatments were successfully performed without intraoperative skin burns, serious bleeding, or serious thyroid storm. A positive correlation was observed between ablation time and nodule size (R2 = 0.674). Only one patient (0.7%) experienced laryngeal nerve injury after operation. Moreover, the results of thyroid function tests (free triiodothyronine, free thyroxine, and thyroid-stimulating hormone) remained within normal ranges both before and after ablation. The complete ablation rate was 99.06%. The volumes of both nodules ≥2 cm and <2 cm significantly decreased after ablation. Six months after ablation, the average volume of nodules ≥2 cm had decreased to 1.02 ± 2.42 mL, and the volume reduction ratio was 83.11%. Conclusion: The combination of ultrasound-guided RFA with hydrodissection very effectively treats benign thyroid nodules while reducing damage to the surrounding tissues. This method is safe and effective for treating benign thyroid nodules

Application of hydro-dissection technique in percutaneous thermal ablation of neck nodular lesions / 第二军医大学学报

Objective To introduce the hydro-dissection technique and its application in ultrasound-guided percutaneous thermal ablation therapy of neck nodular lesions. Methods A total of 1 126 patients suffering from neck nodular diseases received percutaneous thermal therapy using radiofrequency ablation or microwave ablation from May 2005 to April 2013. As a part of the treatment procedure, ultrasound-guided injection of separating liquid was performed into between the target nodules and surrounding structures to form a separating zone prior to ablation. The roles of hydro-dissection technique in improving the safety of puncture route, reducing the thermal injury to normal tissues, and enhancing the curative effects of ablation were analyzed. Results Hydro-dissection technique was successfully performed in as many as fourteen parts related to the thyroids, parathyroids, submandibular glands and lymph nodes. The key points and ultrasonic characteristics of this maneuver were well established and understood. Compared with those not receiving the technique, those receiving the technique had significantly reduced heat damage to lesion-adjacent structures (0.7% vs 15%, P < 0.01) and decreased incomplete ablation rate of the lirst try (0.29% vs 7.4%, P < 0.01). Conclusion Hydro-dissection technique under ultrasound-guidance is easy to perform, has good repeatability and reliable effect; it may serve as a safe and effective supplementary measure for thermal ablation of various neck nodular lesions.

Resultado con hidrodisección del paratendón del tendón rotuliano, en reconstrucción del ligamento cruzado anterior de rodilla / Result of hydrodissection of the paratendon of the patellar tendon during bone-tendon-bone graft reconstruction of the anterior cruciate ligament

Objetivo: evaluar el efecto clínico-funcional de la hidrodisección del paratendón en el periodo posoperatorio de pacientes sometidos a reconstrucción de ligamento cruzado anterior, para lo cual se midió funcionalidad de la rodilla, dolor, extensión y flexión. Material y métodos: estudio clínico no controlado realizado en el Hospital de Ortopedia “Victorio de la Fuente Narváez”, Unidad de Medicina de Alta Especialidad “Magdalena de las Salinas”, Instituto Mexicano del Seguro Social, en el que se incluyeron pacientes en quienes se efectuó injerto hueso-tendón-hueso, 22 con hidrodisección del paratendón y 23 sin hidrodisección. Resultados: el grupo con hidrodisección estuvo integrado por 20 hombre y dos mujeres, y el grupo sin hidrodisección, por 22 hombres y una mujer (p = 0.581); edad de 29 ± 4.6 años vs. 26 ± 6.2 años (0.946); peso de 68 ± 8.8 kg vs. 72 ± 6.2 kg; (p = 0.190); altura de 160 ± 4.8 cm vs. 162 ± 7.5 cm; (p = 0.909); lado afectado, derecho 5 vs. 5, izquierdo 17 vs. 18 (p = 0.937); puntuación en la Escala de Valoración de la Sociedad de Rodilla, 84 ± 4 vs. 70 ± 8; evaluación del dolor mediante EVA a los 10 días, 3.7 ± 1.6 vs. 6.2 ± 1.4; y a las cuatro semanas, 1.3 ± 1.6 vs. 4.1 ± 2.1 (p < 0.001); flexión 95 ± 6.7 grados vs. 86 ± 6.1 grados (p < 0.001). Conclusiones: en el periodo posoperatorio mediato (10 días y cuatro semanas), con la hidrodisección disminuyó el dolor y aumentaron los rangos de movilidad; la rehabilitación de inicio se lleva cabo con menor dificultad.

BACKGROUND: We undertook this study to evaluate the clinical and functional effect of hydrodissetion of the paratendon in the postoperative period of patients submitted to surgery of reconstruction of anterior cruciate ligament. METHODS: A non-controlled clinical study was conducted at the Unidad de Alta Especialidad de Ortopedia y Traumatología [quot ]Magdalena de las Salinas,[quot ] Instituto Mexicano del Seguro Social, Mexico City. Twenty two patients and 23 controls were included. Surgical intervention consisted of a bone-tendon-bone technique with hydrodissection and without hydrodissection of the paratendon. RESULTS: The following results were obtained: functionality of the knee, pain, extension and flexion. Male: 20 vs. 22; female: 2 vs. 1 (p = 0.581), age: 29 +/- 4.6 years vs. 26 +/- 6.2 (0.946); weight: 68 +/- 8.8 vs. 72 +/- 6.2 (p = 0.190); height: 1.60 m +/- 4.8 vs. 1.62 m +/- 7.5 (p =0.909). Side: right: 5 vs. 5; left: 17 vs. 18 (p = 0.937). Evaluation scale of Knee Index: 84 +/- 4 vs. 70 +/- 8; pain: 10 days: 3.7 +/- 1.6 vs. 6.2 +/- 1.4, 4 weeks: 1.3 +/- 1.6 vs. 4.1 +/- 2.1 (p <0.001) flexion: 95 +/- 6.7 degrees vs. 86 +/- 6.1 degrees (p <0.001) group of hydrodissection vs. no hydrodissection, respectively. CONCLUSIONS: In the immediate postoperative period (4 weeks), pain is diminished and range of mobility increases as a result of the decrease of pain.