RE: Tetanization
The disease tetanus used to be called lock jaw, if I remember correctly. So, if that implies a real symptom of the disease (I have no idea), then the word tetanus may have a common meaning with the can't let go symptom discussed here. // Jack Cook, Xerox EMC -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Thursday, November 15, 2001 12:39 AM To: emc-p...@majordomo.ieee.org Subject: Re: Tetanization I read in !emc-pstc that Price, Ed ed.pr...@cubic.com wrote (in b78135310217d511907c0090273f5190d0b...@curly.ds.cubic.com) about 'Tetanization', on Wed, 14 Nov 2001: I was discussing tetanus with my wife. She checked some of her old textbooks and found the attached explanation of tetanus and a very good graphic. In the field of electric shock, tetanus is the technical term describing what we commonly refer to as can't let go. Tetanus occurs in the range of 7 to 50 mA. It seems to me that the actual word 'tetanus' is not used for this in Britain, maybe because of the risk of confusion with the infection. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: Tetanization
Hi John: It seems to me that the actual word 'tetanus' is not used for this in Britain, maybe because of the risk of confusion with the infection. Reilly uses the word tetanus. Guyton uses the word tetanization. Tetanization would seem a better choice of word to describe the electrically-induced phenomenon as it avoids confusion with the disease. Tetanization (Guyton) is the general term describing uncontrollable muscle contraction caused by multiple stimuli in rapid succession. Can't-let-go, as we use it in product safety, describes a specific tetanization situation where a body part is caused to continuously grip an object due to the tetanization. The danger of can't-let-go tetanization is that the object being gripped is one of the electrical conductors providing the current for tetanization. Best regards, Rich --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
RE: Tetanization
I believe that both conditions (the electric stimulation and the disease) exhibit the same final result: 'fusion' (rigidity) of the muscle/s see also http://www.rxlist.com/cgi/generic/tettoxpi.htm (click on tetanus for the explanation of the disease). Regards, Naftali Shani, Catena Networks (www.catena.com) 307 Legget Drive, Kanata, Ontario, Canada K2K 3C8 613.599.6430/866.2CATENA (X.8277); C 295.7042; F 599.0445 E-mail: nsh...@catena.com -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Thursday, November 15, 2001 3:39 AM To: emc-p...@majordomo.ieee.org Subject:Re: Tetanization I read in !emc-pstc that Price, Ed ed.pr...@cubic.com wrote (in b78135310217d511907c0090273f5190d0b...@curly.ds.cubic.com) about 'Tetanization', on Wed, 14 Nov 2001: I was discussing tetanus with my wife. She checked some of her old textbooks and found the attached explanation of tetanus and a very good graphic. In the field of electric shock, tetanus is the technical term describing what we commonly refer to as can't let go. Tetanus occurs in the range of 7 to 50 mA. It seems to me that the actual word 'tetanus' is not used for this in Britain, maybe because of the risk of confusion with the infection. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
RE: Tetanization
This observation has probably been made many times, but isn't it ironic that the peak muscle clamping strength straddles European and US mains frequencies? Timothy J. Christman Test Engineer Tel 651.582.3141 Fax 651.582.7599 timothy.christ...@guidant.com Guidant Corporation 4100 Hamline Ave. N. St. Paul, MN 55112 USA www.guidant.com Opinions are mine, not my employer, I am not a lawyer, nor am I Diane Sawyer, etc. etc. -Original Message- From: Price, Ed [mailto:ed.pr...@cubic.com] Sent: Wednesday, November 14, 2001 9:33 PM To: 'emc-p...@ieee.org' Subject: Tetanization NOTE: Small, safe Adobe attachment included. -Original Message- From: NUTE,RICHARD (HP-SanDiego,ex1) [mailto:richard_n...@am.exch.hp.com] Sent: Wednesday, November 14, 2001 4:19 PM To: Price, Ed Subject: Tetanization I was discussing tetanus with my wife. She checked some of her old textbooks and found the attached explanation of tetanus and a very good graphic. In the field of electric shock, tetanus is the technical term describing what we commonly refer to as can't let go. Tetanus occurs in the range of 7 to 50 mA. Best regards, Rich Richard Nute Hewlett-Packard Company San Diego Note: Since I am unable to post attachments from my subscribed address, I've asked Ed Price to post this on my behalf. Please send replies to me at ri...@ieee.org. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: Tetanization
I read in !emc-pstc that Price, Ed ed.pr...@cubic.com wrote (in b78135310217d511907c0090273f5190d0b...@curly.ds.cubic.com) about 'Tetanization', on Wed, 14 Nov 2001: I was discussing tetanus with my wife. She checked some of her old textbooks and found the attached explanation of tetanus and a very good graphic. In the field of electric shock, tetanus is the technical term describing what we commonly refer to as can't let go. Tetanus occurs in the range of 7 to 50 mA. It seems to me that the actual word 'tetanus' is not used for this in Britain, maybe because of the risk of confusion with the infection. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Tetanization
NOTE: Small, safe Adobe attachment included. -Original Message- From: NUTE,RICHARD (HP-SanDiego,ex1) [mailto:richard_n...@am.exch.hp.com] Sent: Wednesday, November 14, 2001 4:19 PM To: Price, Ed Subject: Tetanization I was discussing tetanus with my wife. She checked some of her old textbooks and found the attached explanation of tetanus and a very good graphic. In the field of electric shock, tetanus is the technical term describing what we commonly refer to as can't let go. Tetanus occurs in the range of 7 to 50 mA. Best regards, Rich Richard Nute Hewlett-Packard Company San Diego Note: Since I am unable to post attachments from my subscribed address, I've asked Ed Price to post this on my behalf. Please send replies to me at ri...@ieee.org. tetanus_1.pdf Description: Binary data
Re: Tetanization and fibrillation (was GFI history)
This is why I like this email service. I learn so much! Thanks to all of the contributors Hans __ Reply Separator _ Subject: Re: Tetanization and fibrillation (was GFI history) Author: richn-at-sdd (ri...@sdd.hp.com) at HP-ColSprings,mimegw5 List-Post: emc-pstc@listserv.ieee.org Date:9/9/97 10:36 AM Hello from San Diego: Several messages have suggested some values of current that cause ventricular fibrillation. The values are all over the map, and are much lower than those reported in the research literature. Here are some better facts together with the source of those facts. snip
