Shock Hazards in Operating Rooms and Patient-care Areas

Hopps, J. A.

doi:10.1097/00000542-196908000-00006

Cited by 20 publications

(4 citation statements)

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“…2) were made. Earlier reports of electrical parameters in the external circuit at the threshold of fibrillation (Hopps, 1969;Geddes, Baker, Moore & Coulter, 1969) agree well with the measured figures (Table IV). 4).…”

Section: Presentation Of Fibrillation Thresholds In 36 Patients Undsupporting

confidence: 90%

“…3) and endocardial induction (I 1 patients) present investigation (100 pA, Table V) was thus lower than 25 pA/mm2 reported by Roy (Hopps, 1969). 3) and endocardial induction (I 1 patients) present investigation (100 pA, Table V) was thus lower than 25 pA/mm2 reported by Roy (Hopps, 1969).…”

Section: Presentation Of Fibrillation Thresholds In 36 Patients Undcontrasting

confidence: 44%

“…As a consequence thereof, by far the most frequent type of current is an alternating one (a.c.) of 50-60 cycles per second (Walter, 1969;Hopps, 1969). As a consequence thereof, by far the most frequent type of current is an alternating one (a.c.) of 50-60 cycles per second (Walter, 1969;Hopps, 1969).…”

Section: Introductionmentioning

confidence: 99%

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Accidental Ventricular Fibrillation of the Human Heart:A Study of Excitability Levels with Alternating Current

Kugelberg

1975

Scandinavian Journal of Thoracic and Cardiovascular Surgery

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With the use of electronic equipment in medical work an electrical hazard can not be completely avoided. The danger for the patient lies in an accidental ventrical fibrillation induced by a current passing through the body. Thresholds of vulnerability for such currents were determined in dogs as well as on the human heart during cardiopulmonary bypass. Various electrode positions were tested and the minimum current of induction was measured. The lowest current producing fibrillation of the human heart was 100 muA. At the electrode surface the density of the electrical field then was 6-14 muA/mm2. In our routine procedure during open-heart surgery, the mean value for induction was found to be 600 muA.

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Section: Presentation Of Fibrillation Thresholds In 36 Patients Undsupporting

confidence: 90%

Section: Presentation Of Fibrillation Thresholds In 36 Patients Undcontrasting

confidence: 44%

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Accidental Ventricular Fibrillation of the Human Heart:A Study of Excitability Levels with Alternating Current

Kugelberg

1975

Scandinavian Journal of Thoracic and Cardiovascular Surgery

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“…It is also possible that there was a discharge of static electricity from the surgical instrumentation as it was being placed over the k-wire, which resulted in nerve stimulation. The buildup of static electricity on surgical equipment has been recognized for years now [ 8 ], however, we found no specific literature reference to lower extremity muscle spasms related to static electrical discharge. An antistatic silicone rubber mat for retaining surgical instruments was used during the operation, but other surgical devices (such as the surgical probe) may still have accumulated in charge during the operation.…”

Section: Discussionmentioning

confidence: 86%

Intraoperative herniation of an L5-S1 disc during microdiscectomy and transforaminal lumbar interbody fusion: a case report

Berlin

Seshan²,

Abrahams

et al. 2015

J Med Case Reports

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IntroductionWe report the progression of an intraoperative L5-S1 lumbar disc herniation that occurred during a routine microdiscectomy and transforaminal lumbar interbody fusion, which, to the best of our knowledge, has never been previously reported in the literature. The objective of this report is to bring to light the possibility of a lumbar disc herniating intraoperatively, and to demonstrate that accompanying neurologic involvement can be detected and subsequently addressed with the aid of neurophysiologic monitoring.Case presentationA 36-year-old African American woman, who had previously undergone minimally invasive microdiscectomy for a right L5-S1 herniated nucleus pulposus with full recovery, presented with a large reherniation of the L5-S1 disc on the right side. During her operation, while a tap was followed into the L5 left pedicle, there was a sudden profound spasm of our patient’s legs and back that lasted for the duration of 15 seconds, culminating in the loss of all somatosensory evoked potentials in our patient’s lower extremities. Exploration of this previous microlaminotomy site revealed a massive disc extrusion protruding through the microlaminotomy. Immediate removal of this extruded disc material restored all somatosensory evoked potentials and our patient awoke with no neurologic deficits.ConclusionsAn intraoperative disc herniation in the lumbar spine, though very rare, can occur and can result in neurologic compromise as evidenced by the loss of somatosensory evoked potentials. By identifying the event, it can be remedied by evaluating the disc visually, removing extruded fragments and decompressing nerve roots with recovery of somatosensory evoked potentials and normal neurologic function postoperatively. If neurophysiological monitoring shows there is a sudden loss of response, then consideration should be given to the possibility of an acute intraoperative herniation.

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Electrical Hazards of Cryoextraction

Wirtschafter¹,

Sohmer²

1972

Archives of Ophthalmology

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Shock Hazards in Operating Rooms and Patient-care Areas

Cited by 20 publications

References 0 publications

Accidental Ventricular Fibrillation of the Human Heart:A Study of Excitability Levels with Alternating Current

Accidental Ventricular Fibrillation of the Human Heart:A Study of Excitability Levels with Alternating Current

Intraoperative herniation of an L5-S1 disc during microdiscectomy and transforaminal lumbar interbody fusion: a case report

Electrical Hazards of Cryoextraction

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