Electrosurgical Injuries Research Articles

Guidelines in Practice: Electrosurgical Safety.

Surgeons routinely use electrosurgical devices to cut and coagulate tissue during surgical procedures. However, hazards associated with electrosurgery (eg, burns, electrical shock, fire) can place patients or personnel at risk. Perioperative nurses should standardize processes, preoperatively assess the risks for electrosurgical injuries, and participate in education activities on electrosurgical safety to help prevent injuries from occurring. The AORN "Guideline for electrosurgical safety" provides guidance to perioperative personnel for safe use of electrosurgical units, electrocautery devices, and argon-enhanced coagulators. This article discusses prevention of electrosurgical unit injuries, including those that can be caused by electrosurgical accessories. A scenario describes how a team investigating two incidents related to use of electrosurgery uses an assessment tool to identify risks for injury and includes a report of these risks in the surgical briefing. Perioperative RNs should review the entire guideline for additional information when creating and updating policies and procedures for electrosurgical safety.

Complications, Implications, and Prevention of Electrosurgical Injuries: Corner Stone of Diathermy Use for Junior Surgical Trainees.

Diathermy is commonly used in modern-day surgery. The incidence of electrosurgical injuries related to diathermy is under reported, as it is difficult to ascertain the true impact on both patient and healthcare professionals. As junior surgical trainees, understanding of the mechanism and biophysics of the electrosurgical tools enables safer usage and contributes to improved outcome. Careful use of electrosurgical tools during operation and appropriate communication amongst staff members are pivotal to a safe surgical outcome. Here, we discuss the causes and risk factors regarding electrosurgical complications along with suggestions to ensure safe practice, focusing on commonly neglected areas.

Quantifying inadvertent thermal bowel injury from the monopolar instrument.

Insulation defects are observed in 3-39% of laparoscopic instruments. Electrosurgical injuries due to insulation defects or capacitive coupling remain an issue in laparoscopic surgery with a prevalence of 0.6-5 per thousand cases. Shielded instruments with active electrode monitoring (AEM) have been postulated to prevent these injuries. The benefit of these instruments has not been quantified. Most bowel injuries are unrecognized intra-operatively. Injury is revealed only after the patient exhibits peritonitis symptoms and surgical intervention to repair the bowel is required. These injuries may result in devastating and costly complications or mortality. The extent of bowel injury possible with commonly used generator settings and associated energy output has never been histologically defined. Our objectives in this experimental study were: quantify and compare the energy released through insulation defects or capacitive coupling with standard unshielded monopolar versus shielded instruments with (AEM), determine energy required to cause a visible burn, and relate the histological burn depth to a given amount of energy. Ex vivo porcine jejunum was used for tissue testing. An oscilloscope measured energy output from three common electrosurgical generators at recommended power settings with standard or AEM instruments with insulation defects and in capacitive coupling scenarios. Presence of a visible burn was noted, and depth of tissue damage for a given amount of energy was measured histologically. All samples that received ≥3.8J of energy had visible burns. As little as 10J caused full wall thickness burns. 3.8J was exceeded at the 30- and 50-W power settings in every experimental scenario using standard monopolar instruments; AEM instruments never approached this much energy. Serious burn injury results from small amounts of energy leaked from standard instruments. AEM instruments appeared protective and did not leak sufficient energy to cause burn injuries to the bowel.

A novel safety mechanism to reduce the risk of inadvertent electrosurgical injury

Thousands of laparoscopic procedures requiring the use of electrosurgical devices are performed worldwide on a daily basis. The use of electrosurgery carries with it inherent risks related to the use of an energy source within the abdomen. Inadvertent tissue injury due to the use of electrosurgical devices is rare, but is associated with a high morbidity and mortality if undetected. This paper describes a novel, yet simple method using instrument markers and image processing algorithms to reduce the risk of unsafe activation of electrosurgical instruments during laparoscopy. The method was tested in a simulated environment and measured against the decision of an experienced laparoscopic surgeon. Results showed that the position of an instrument in a visual field could be accurately determined using an image processing algorithm to ascertain whether it was safe for activation in agreement with the decisions made by manual inspection.

Endometrial ablation in the management of abnormal uterine bleeding.

Abstract Background Abnormal uterine bleeding (AUB) is the direct cause of a significant health care burden for women, their families, and society as a whole. Up to 30% of women will seek medical assistance for the problem during their reproductive years. Objective To provide current evidence-based guidelines on the techniques and technologies used in endometrial ablation (EA), a minimally invasive technique for the management of AUB of benign origin. Methods Members of the guideline committee were selected on the basis of individual expertise to represent a range of practical and academic experience in terms of both location in Canada and type of practice, as well as subspecialty expertise and general background in gynaecology. The committee reviewed all available evidence in the English medical literature, including published guidelines, and evaluated surgical and patient outcomes for the various EA techniques. Recommendations were established by consensus. Evidence Published literature was retrieved through searches of MEDLINE and The Cochrane Library in 2013 and 2014 using appropriate controlled vocabulary and key words (endometrial ablation, hysteroscopy, menorrhagia, heavy menstrual bleeding, AUB, hysterectomy). Results were restricted to systematic reviews, randomized control trials/controlled clinical trials, and observational studies written in English from January 2000 to November 2014. Searches were updated on a regular basis and incorporated in the guideline to December 2014. Grey (unpublished) literature was identifies through searching the websites of health technology assessment and health technology-related agencies, clinical practice guideline collections, clinical trial registries, and national and international medical specialty societies. Values The quality of evidence in this document was rated using the criteria described in the Report of the Canadian Task Force on Preventive Health Care (Table 1). Results This document reviews the evidence regarding the available techniques and technologies for EA, preoperative and postoperative care, operative set-up, anaesthesia, and practical considerations for practice. Benefits, harms, and costs Implementation of the guideline recommendations will improve the provision of EA as an effective treatment of AUB. Following these recommendations would allow the surgical procedure to be performed safely and maximize success for patients. Conclusions EA is a safe and effective minimally invasive option for the treatment of AUB of benign etiology.

Complications of electrosurgery in laparoscopy

Abstract Electrosurgery is widely used in laparoscopic surgeries. It is essential to understand the principles of using appropriate electric currents and techniques to achieve the desired tissue effect and avoid complications. We reviewed the literature concerning the incidence of electrosurgical injuries, the mechanisms of injury, and recognition and management of electrosurgical complications. Alertness to postoperative warning signs, patient education prior to discharge, and the detection of delayed manifestations with salvage maneuvers may minimize catastrophic complications.

Rationale for the Fundamental Use of Surgical Energy™ (FUSE) curriculum assessment: focus on safety

Almost all surgical procedures involve the use of devices that apply energy to tissue. Adverse events can occur if the devices are not used appropriately. The SAGES' Fundamental Use of Surgical Energy™ (FUSE) program will include a curriculum and certification examination to address this safety issue. The aim of this study was to determine the self-perceived knowledge of practicing surgeons related to energy-based devices and identify areas to emphasize in the assessment component of FUSE. Psychometric experts led the test development process. During a 2-day retreat, a multidisciplinary group defined 63 test objectives assessing the knowledge and skills required to use energy-based surgical instruments safely (job task analysis). A survey was sent to a sample of 103 SAGES leaders and others in the test target audience to determine the number of items to use for the certification examination. Participants rated each objective for frequency, relevance, and importance on a 1-7 scale with the means used to create a weighted scale. The survey also included five self-assessment questions. Fifty surveys were completed; only 28 % of respondents considered themselves "experts." The most common source of knowledge was "industry sales representative or course" (42 %). The highest weighted topic was "Prevention of Adverse Events with Electrosurgery." The highest-rated objectives (>6 out of 7) were "Identify various mechanisms whereby electrosurgical injuries may occur," "Identify patient protection measures for setup and settings for the electrosurgical unit," and "Identify circumstances, mechanisms, and prevention of dispersive electrodes-related injury." Although basic and advanced energy-based devices are commonly used, training has been largely dependent upon industry representatives or industry-sponsored courses. Few surgeons consider themselves experts in the mechanisms of action and the appropriate and safe use of energy-based surgical devices. Competencies that emphasize electrosurgical safety were viewed as most important for the FUSE certification examination.

Surgical Complications Specific to Monopolar Electrosurgical Energy: Engineering Changes That Have Made Electrosurgery Safer

Monopolar electrosurgical energy is the most commonly used energy source during laparotomic and laparoscopic surgery. The clinical application of monopolar energy is not without risk. Monopolar electrosurgical energy was introduced into surgical practice at the turn of the 20th century. Alternate site burns during laparotomic application were the most common complication for the first half century (i.e., ground point burns and dispersive electrode burns [1920–1970]). The aims of this article were to discuss historic design flaws associated with the most common alternate site burns, ground point burns, and dispersive electrode burns and the technological advancements introduced to mitigate these risks to the patient and to discuss current design flaws associated with stray energy burns during laparoscopy because of insulation failure and capacitive coupling and the technological advancements introduced to eliminate these risks to the patient. Today, insulation failure and capacitive coupling are the most common reasons for electrosurgical injury during laparocopic procedures. There is a need for advanced technology such as active electrode monitoring to address these invisible risks to the surgeon and their patients. In addition, the laparoscopic surgeon should be encouraged to study the basic biophysics involved in electrosurgery.

Histologic Changes Associated With Electrosurgical Injury

tures of traumatic injuries on–coagulative-type cell necrosis, more severe in the at than the mucosa abundant capillary ingrowth with rapid white cell n in deposition at the injury site followed by fibroblastic ion reconstruction of the injured muscle coat by 96 hours tures of electrosurgical injuries of capillary ingrowth of fibroblastic muscle coat ction of white cell infiltration except in focal areas at the rder of the injury oagulation necrosis Fig. 1

Trans-umbilical laparoscopic appendectomy for acute appendicitis without raising skin-flaps: An easy-to-use modification applied to the series of 164 patients from a rural institute of central India

Background:Laparoscopic appendectomy (LA) is widely used and generally an accepted method for managing appendicitis. And the recent invention of laparoscopic trans-umbilical-appendectomy is a further improvement of LA. However, it requires expensive instruments with the requisite expertise. We discuss a useful modification of trans-umbilical appendectomy for acute appendicitis using routine instruments.Materials and Methods:From August 2009 to March 2011, 164 patients were operated by this method at our rural center. Out of them, 102 were males and 62, females. Mean age for males was 27.5 years (range, 14-51) and females, 31.2 years (range, 17-48). Mean body mass index was 21.7 kg/m2 (range, 16.2-29) and 23.2 kg/m2 (range, 17.4-30) for males and females respectively. Acute appendicitis patients wherein surgery was deemed essential were offered this technique. Three umbilical ports (one 10 mm and two 5 mm) were strategically placed to dissect out appendix. Routine laparoscopic instruments were used for all.Results:Mean operativetime was 45 min (range, 30-90) with 1.8% conversion-rate to conventional laparoscopy. Average blood-loss was 15 ml (range, 10-25). We had one caecal electrosurgical injury, which was managed expectantly. Umbilical sepsis and seroma were 3% and 6.1% respectively. Patients were discharged after an average 1.3 days (range, 1-4). The scars had receded in the umbilicus giving a near-scarless abdomen.Discussion:Recently developed technique of single-port appendectomy has primarily been used for chronic appendicitis. Moreover, >1 inch incision inducted per-umbilicum rises the attendant morbidity. We study a surgeon-friendly simple technique applied to acute appendicitis.Conclusion:Method described here is feasible and safe for managing acute appendicitis. It can be learnt rather easily (learning curve of 15 cases) by a laparoscopic surgeon and avoids expensive instrumentation. Thus, it may stand out in providing benefits of modern surgery to population of developing countries.

Principles and Safety Measures of Electrosurgery in Laparoscopy

Electrosurgical units are the most common type of electrical equipment in the operating room. A basic understanding of electricity is needed to safely apply electrosurgical technology for patient care. We reviewed the literature concerning the essential biophysics, the incidence of electrosurgical injuries, and the possible mechanisms for injury. Various safety guidelines pertaining to avoidance of injuries were also reviewed. Electrothermal injury may result from direct application, insulation failure, direct coupling, capacitive coupling, and so forth. A thorough knowledge of the fundamentals of electrosurgery by the entire team in the operating room is essential for patient safety and for recognizing potential complications. Newer hemostatic technologies can be used to decrease the incidence of complications.

Determination of Human Penile Electrical Resistance and Implication on Safety for Electrosurgery of Penis

Electrosurgery has been a surgical application since the late 19th century. Although many urologists take this daily application for granted, the effects of electrical treatment on penile nerves and vessels have not been well documented. To investigate the electrical characteristics of the penis and erectile tissues and to discover the potential hazards of electrosurgery on the penis. Measurement of the electrical characteristics of three human penises in order to create models to analyze the effect of electricity on penile nerves and vessels. Electrical resistivity of the penile shaft, electrical current density, and electric field strength on penile nerves and vessels, proportion of generated heat on the penis and electrical current density of the electrosurgery return electrode. Electrical resistivity (ρ) of the penile shaft is 127.14 Ω · cm at 500 kHz. Electrical current density (J) of the penis shaft is 71.06 mA/cm(2) , nerve (60.23 mA/cm(2) ), vessel (67.93 mA/cm(2) ), and return electrode (2.11 mA/cm(2) ). Electrical field strength (E) of the whole penis shaft is 9.03 volt/cm. The proportion of generated heat on the penis is four times as much as on other body parts of the circuit. Potential and subclinical injury to erectile tissue caused by electrosurgery on the penis cannot be underestimated. The injury mechanism can be attributed to a thermal (electrical current) effect and a nonthermal (mainly electrical field) effect. Ways to avoid the electrosurgical injury are: using less power (W)/electrical field and less time, biopolar electrosurgery confining the injured area, ligation to achieve hemostasis, and new laser technologies.

Evaluation of the Outcomes of Electrosurgical Induced Bowel Injury Treated with Tissue Glue/Sealant Versus Sutured Repair in a Rabbit Model

Bowel injury is an uncommon, although potentially devastating, intraoperative laparoscopic complication. Questions have been raised about the possible use of a tissue adhesive to repair injured bowel. We compared glued repair and sutured repair of both large bowel (LB) and small bowel (SB) electrosurgical injuries in a rabbit model. Pneumoperitoneum was obtained, and four laparoscopic ports were placed in each of 48 New Zealand rabbits. The hook electrode was used in a specified manner to create an equal number of uniform full-thickness injuries to either the SB or the LB. Laparoscopic repair was performed with a 3-0 silk Lembert suture (LS), fibrin glue (FG), or BioGlue (BG), or repair was not performed (i.e., no repair, NR); the animals were monitored for 3 weeks. Adverse clinical outcomes and findings at laparotomy were recorded. Pathologic assessment included an objective scaled evaluation of the intensity of the inflammatory response and degree of healing. In the SB injury group, deteriorating clinical condition necessitated early euthanasia in one animal repaired with FG, one animal repaired with BG, and two animals with NR. LS repair animals had no adverse clinical outcomes. The LB injury group had no adverse clinical outcomes regardless of the method of repair, including the control group. Of the animals that survived for 3 weeks, the animals repaired with BG had more intraabdominal adhesions (100%) than LS (33%), FG (55%), and NR (50%) (p = 0.001). The pathologic assessment revealed that BG induced a more intense inflammatory response (p < 0.05). In the rabbit, suture repair of an electrosurgical SB injury appears to have improved outcomes when compared with a glued repair. In contrast, LB injury responded well to any form of treatment. The data suggest that suture is superior to biological glues when dealing with a laparoscopic electrosurgical bowel injury.

Suction cautery and electrosurgical risks in otolaryngology

Flash fires, mucosal injuries and commissure burns during otolaryngology procedures have been largely attributed to anesthetic and surgical errors. Reports of direct electrosurgical device related events are rare. The discovery of thermal damage to the oral commissure during routine suction cautery adenoidectomy at our institution prompted a detailed investigation of the device's thermal properties. We complement this analysis with a review of electrocautery device related injuries reported in otolaryngology literature. FLIR Systems Thermovision A40 infrared camera was used to evaluate temperature changes along the electrosurgical wand of suction cautery devices. Shaft temperatures were measured at specific times of continuous use, distances along the shaft, and cautery settings. A literature search of electrocautery-associated injuries during upper aerodigestive procedure was then performed. Nine pediatric otolaryngologists were then interviewed for historical experience with electrocautery injuries. Temperatures exceeding 60 degrees C, and sufficient to cause thermal soft tissue damage, occurred along the suction cautery wand at a setting of 40 Watts (W). These temperatures traveled far enough to appose the oral commissure when the device was simultaneously in continuous use, in the fulgurate mode, and with the suction turned off. Literature review identified eleven articles specifically pertaining to electrosurgical injuries during routine oropharyngeal procedures. Flash fires and their associated burns were the most frequently reported complication. Conversely, seven of ten cases elicited from peer interviews were oral or commissure burns attributed to improper insulation of electrocautery devices. Inadvertent electrosurgical injuries during routine otolaryngology procedures can result from inadequate equipment insulation. Techniques to reduce the likelihood of these events are discussed.

Complications of laparoscopic surgery: How to avoid them and how to repair them

1Postoperative complications of thermal injury to bowel generally present on postoperative day aonebtwocthreedfour2Which is the most hazardous day to do outpatient laparoscopic surgery? aMondaybWednesdaycFridaydThursday3Urinary bladder injuries during laparoscopic-assisted vaginal hysterectomy and laparoscopic hysterectomy are report to be as high as: a0.5%b8%c2%d5%4What percentage of reported ureteral injuries is unrecognized during operation? a50%b30%c70%d40%5The safest means of abdominal entry is: aopen techniquebVeres needle insufflationcprimary trocar insertiondnone of the above6Major vascular injury can be avoided by using: apyramidal trocarbdilating trocarcoptical trocardnone of the above7Which can be a cause of electrosurgical injury during laparoscopy? aprobe couplingbinadvertent tissue contactcinsulation failuredcapacitative conductioneall of the above8Desiccation of tissue: ais the result of tissue dryingbmarkedly increases tissue impedancecstops the flow of electrons through tissuedall of the above9Secondary trocar insertion most commonly injures: asmall bowelbinferior epigastric vesselsccommon iliac arterydlarge boweleurinary bladder10Palmer’s point is in the: aright lower quadrantbleft lower quadrantcmidclavicular line below the ribsdsuprapubic area

Six years of experience in laparoscopic surgery of esophageal achalasia.

We show the experience of 6 years in laparoscopic surgical therapy of esophageal achalasia, performing of the Heller-Dor or Heller-Toupet operation, with particular regard to the technical aspect. One hundred and ten laparoscopic interventions were done between November 1995 and December 2001. We studied operative time in hiatus approach, esophagocardiomyotomy, transoperative endoscopy, and anti-reflux procedure. We also analyzed the relation between complications and clinical evolution of disease with clinical stage. The mean surgical time of the intervention is 138 min, and it is significantly increased by transoperative endoscopic control; conversion to open surgery was not necessary. Clinical results are classified as excellent in 103 patients. Morbidity was 6%. This surgical procedure is a first line in the treatment of esophageal achalasia. It is necessary to have special care in early diagnostic cases to avoid electrosurgical injury.

A 3 TROCAR TECHNIQUE FOR TRANSPERITONEAL LAPAROSCOPIC NEPHRECTOMY

Additional trocars and retractor instruments may enhance the risk of iatrogenic injuries during laparoscopic nephrectomy. We describe a modified technique of laparoscopic nephrectomy requiring only 3 ports of entry and no extra instruments instead of the 5 ports, 2 of which are used for retractors, usually required. With the patient in full flank position a 10 mm. trocar is inserted between the umbilicus and subcostal margin, a 5 mm. trocar is placed subcostal in the midclavicular line and a 12 mm. trocar is inserted over the iliac crest in the anterior axillary line. The first step is incision of the line of Toldt and medial reflection of the colon. During the second step of vascular controls the posterosuperior attachments of the kidney are left untouched, keeping the renal vessels stretched, with no need for an extra instrument. The third step consists of severing the remaining posterior and superior attachments of the kidney followed by specimen retrieval. A total of 14 consecutive patients underwent laparoscopic nephrectomy with this technique. All 14 procedures were completed without an additional port. There were no intraoperative or postoperative complications, except 1 abdominal wall hematoma. Mean operating time was 120 minutes (range 70 to 230) and mean hospital stay was 5 days (range 3 to 7). Transperitoneal laparoscopic nephrectomy with laparoscopic access limited to 3 trocars is a reliable and safe technique.

Histologic characteristics of electrosurgical injuries

To describe the wide variation of histologic characteristics produced by electrosurgical burns. Retrospective analysis. University-associated teaching hospital. Pigs and dogs. Various power settings were employed with both monopolar and bipolar electrodes to incur electrosurgical damage. Animals were followed for up to 96 hours after injury. Histologic analysis yielded characteristics of electrosurgical damage including areas of complete necrosis and coagulation, perivascular changes, endothelial damage, and hyperchromic pyknotic nuclei. White cell infiltration was seen only at the margin of necrotic zones of coagulation. The wide spectrum of histology from electrosurgical burns is primarily a result of the area that is sampled. Surgeons should actively investigate any postsurgical complications involving electrosurgery to obtain a definitive cause.

Electrosurgical injuries in gynecologic laparoscopy

We reviewed the 396 operative laparoscopies performed from March 1994 to March 1996 to determine the numbers and causes of electrical injuries. Electrical injuries were reported in four (1.01%) patients. Capacitive coupling induced by a laparoscope inserted through a conductive cannula sleeve with a nonconductive collar caused two bowel injuries that required laparotomy. Insulation failure of an electric cable resulted in a skin burn. A small surface contact area of a cannula sleeve being pulled out of the abdominal wall led to a surface burn in the abdominal wall. Lack of knowledge and insufficient attention on the part of laparoscopic surgeons and operating room personnel may result in electrosurgical accidents.

Electrosurgical injuries during laparoscopy

Despite the fact that electrophysics and its application to surgery, in particular endoscopic surgery, is a discreet science, there is little attention paid to the applied principles of the physics involved when surgeons receive their formal training in the technical aspects of surgery. Most training programs consider the discipline of electrosurgery as a skill that is left to the 'hands on' exposure of the student, and that the skills and knowledge of the average professor have been awarded through a 'grandfather' process of credentials. As a result, many myths have been perpetuated over the past decades since William Bovie introduced the first electrosurgical diathermy machine using high frequency radio waves instead of heated instruments (cautery) to destroy human tissue. Electrogenerators, today, have become finely tuned instruments that offer many versatile variables for the contemporary surgeon to harness and deliver, in either a discreet or broad manner, to tissue to obtain a desired effect and outcome.