torsade de pointes

tor·sade de pointes

(tōr-sad' dĕ pwant'), This word, referring not to individual QRS complexes but to an overall pattern of variation in their form, is properly used in the singular, not the plural (torsades de pointes)."Twisting of the points," a form of ventricular tachycardia nearly always due to medications and characterized by a long QT interval and a "short-long-short" sequence in the beat preceding its onset. The QRS complexes during this rhythm tend to show a series of complexes points up followed by complexes points down, often with a narrow waist between and no definite T waves; at one time referred to as "cardiac ballet." [Fr. torsade, fringe, twist, or coil, + pointe, point or tip (euphonious for "wave burst")]

torsade de pointes

French, torsade–twist, Cardiology A form of polymorphic ventricular tachycardia with prolonged Q-T intervals initiated by a premature ventricular depolarization striking near the apex of a delayed T wave; torsades have irregular rates of 200-250/min with marked variability in amplitude and direction of a QRS wave that seems to twist around an isoelectric baseline; torsades may spontaneously resolve or evolve to ventricular tachyarrhythmia and may be nonspecific or due to drugs–eg, adrenergics, antihistamine, phenothiazine, procainamide, quinines, sotalol, and tricyclic antidepressants, electrolyte imbalance–eg, hypokalemia, hypomagnesemia, CNS hemorrhage or trauma, long Q-T wave syndrome, liquid diet, and underlying heart disease Management Isoproterenol.

tor·sade de pointes

(tōr-sahd' dĕ pwahnt') Literally, "twisting of points," a form of ventricular tachycardia nearly always due to medications and characterized by a long QT interval and a "short-long-short" sequence in the beat preceding its onset. The QRS complexes during this rhythm tend to show a series of complexes points up followed by complexes points down, often with a narrow waist between. [Fr. torsade, fringe, twist, or coil, + pointe, point or tip]

torsade de pointes

(tor-sad'de pwont') A rapid, unstable form of ventricular tachycardia in which the QRS complexes appear to twist, or shift, electrical orientation around the isoelectric line of the electrocardiogram. It often occurs as a life-threatening effect of a medication (such as quinidine, amiodarone, or a tricyclic antidepressant) that prolongs the Q-T interval but may also complicate congenital long QT syndromes. Intravenous magnesium sulfate may be used to treat this arrhythmia. Synonym: polymorphic ventricular tachycardia

单词	torsade de pointes
释义	torsade de pointes tor·sade de pointes (tōr-sad' dĕ pwant'), This word, referring not to individual QRS complexes but to an overall pattern of variation in their form, is properly used in the singular, not the plural (torsades de pointes)."Twisting of the points," a form of ventricular tachycardia nearly always due to medications and characterized by a long QT interval and a "short-long-short" sequence in the beat preceding its onset. The QRS complexes during this rhythm tend to show a series of complexes points up followed by complexes points down, often with a narrow waist between and no definite T waves; at one time referred to as "cardiac ballet." [Fr. torsade, fringe, twist, or coil, + pointe, point or tip (euphonious for "wave burst")] torsade de pointes French, torsade–twist, Cardiology A form of polymorphic ventricular tachycardia with prolonged Q-T intervals initiated by a premature ventricular depolarization striking near the apex of a delayed T wave; torsades have irregular rates of 200-250/min with marked variability in amplitude and direction of a QRS wave that seems to twist around an isoelectric baseline; torsades may spontaneously resolve or evolve to ventricular tachyarrhythmia and may be nonspecific or due to drugs–eg, adrenergics, antihistamine, phenothiazine, procainamide, quinines, sotalol, and tricyclic antidepressants, electrolyte imbalance–eg, hypokalemia, hypomagnesemia, CNS hemorrhage or trauma, long Q-T wave syndrome, liquid diet, and underlying heart disease Management Isoproterenol. tor·sade de pointes (tōr-sahd' dĕ pwahnt') Literally, "twisting of points," a form of ventricular tachycardia nearly always due to medications and characterized by a long QT interval and a "short-long-short" sequence in the beat preceding its onset. The QRS complexes during this rhythm tend to show a series of complexes points up followed by complexes points down, often with a narrow waist between. [Fr. torsade, fringe, twist, or coil, + pointe, point or tip] torsade de pointes (tor-sad'de pwont') A rapid, unstable form of ventricular tachycardia in which the QRS complexes appear to twist, or shift, electrical orientation around the isoelectric line of the electrocardiogram. It often occurs as a life-threatening effect of a medication (such as quinidine, amiodarone, or a tricyclic antidepressant) that prolongs the Q-T interval but may also complicate congenital long QT syndromes. Intravenous magnesium sulfate may be used to treat this arrhythmia. Synonym: polymorphic ventricular tachycardia
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