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10.1093/eurheartj/14.suppl_h.56 http://scihub22266oqcxt.onion/10.1093/eurheartj/14.suppl_h.56 8293755!ä!8293755 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Eur+Heart+J 1993 ; 14 Suppl H (ä): 56-61 Nephropedia Template TP {{tp|p=8293755|t=1993. Early after-depolarizations and torsade de pointes: implications for the control of cardiac arrhythmias by prolonging repolarization |pdf=|usr=}}{{8293755}} gab.com Text Early after-depolarizations and torsade de pointes: implications for the control of cardiac arrhythmias by prolonging repolarization JO: Eur Heart J http://www.kidney.de/pget.php?&tw=1&pmid=8293755 #FOAvip Common clinical features in drug-induced torsade de pointes include hypokalemia and cycle-length prolongation just prior to initiation of the arrhythmia. In canine Purkinje fibres, drugs known to be associated with torsade de pointes, such as quinidine, sotalol or N-acetylprocainamide, consistently produce early after-depolarizations (EADs) and triggered activity at slow drive rates; for quinidine, these abnormalities are exaggerated by low extracellular potassium. Triggered activity can be abolished in vitro in two ways. First, action-potential shortening with abolition of EADs can be accomplished by increasing stimulation rates, beta-stimulation and action-potential shortening antiarrhythmics such as lidocaine. Second, triggered activity can be suppressed, with less prominent effects on EADs, by magnesium, alpha- and/or beta-adrenergic blockade and calcium-channel blockers. The parallels between these in vitro findings and clinical torsade de pointes suggest that EADs and triggered activity play a role in the genesis of the clinical arrhythmia. Further research directed at determining the mechanisms underlying the cellular abnormalities and their propagation to the whole heart should yield information that will increase the safety of antiarrhythmic therapy. Twit Text FOAVip Early after-depolarizations and torsade de pointes: implications for the control of cardiac arrhythmias by prolonging repolarization ????Eur Heart J http://www.kidney.de/pget.php?&tw=1&pmid=8293755 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=8293755 #FOAvip English Wikipedia <ref>{{Cite pmid|8293755}}</ref> Early after-depolarizations and torsade de pointes: implications for the control of cardiac arrhythmias by prolonging repolarization #MMPMID8293755 Roden DM Eur Heart J 1993[Nov]; 14 Suppl H (ä): 56-61 PMID8293755show ga Common clinical features in drug-induced torsade de pointes include hypokalemia and cycle-length prolongation just prior to initiation of the arrhythmia. In canine Purkinje fibres, drugs known to be associated with torsade de pointes, such as quinidine, sotalol or N-acetylprocainamide, consistently produce early after-depolarizations (EADs) and triggered activity at slow drive rates; for quinidine, these abnormalities are exaggerated by low extracellular potassium. Triggered activity can be abolished in vitro in two ways. First, action-potential shortening with abolition of EADs can be accomplished by increasing stimulation rates, beta-stimulation and action-potential shortening antiarrhythmics such as lidocaine. Second, triggered activity can be suppressed, with less prominent effects on EADs, by magnesium, alpha- and/or beta-adrenergic blockade and calcium-channel blockers. The parallels between these in vitro findings and clinical torsade de pointes suggest that EADs and triggered activity play a role in the genesis of the clinical arrhythmia. Further research directed at determining the mechanisms underlying the cellular abnormalities and their propagation to the whole heart should yield information that will increase the safety of antiarrhythmic therapy. |Action Potentials/drug effects[MESH] |Animals[MESH] |Anti-Arrhythmia Agents/*pharmacology[MESH] |Heart Conduction System/*drug effects/physiopathology[MESH] |Humans[MESH] |Long QT Syndrome/chemically induced/*physiopathology[MESH] |Potassium Channels/drug effects[MESH] |Purkinje Fibers/drug effects[MESH]Early after-depolarizations and torsade de pointes: implications for t(epmc).pdf DeepDyve Pubget Overpricing