QTcSPL
Spanish translation: intervalo QT corregido en función de SPL
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| 00:31 Dec 6, 2022 |
| English to Spanish translations [PRO] Medical - Medical (general) / Clinical trial | |||||||
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|  Selected response from: abe(L)solano France | ||||||
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| 4 +2 | corrección del intervalo QT en función del ancho/longitud del pulso de voltaje (QTcPV=QTcSLP) |
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| QTcSPL |
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| Discussion entries: 2 | |
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Answers
8 hrs confidence: 
peer agreement (net): +2
peer agreement (net): +2corrección del intervalo QT en función del ancho/longitud del pulso de voltaje (QTcPV=QTcSLP) Explanation: Así como se usa la ecuación de Fridericia para corregir los valores medidos del intervalo QT, creo que también se pueden corregir los valores de QT en función del ancho/longitud de pulso DE VOLTAJE para ver/comprobar si en realidad se trata de un efecto del fármaco y no por la señal/parámetros del equipo/electrocardiograma. No estoy 100% seguro, pero rebuscando en los parámetros del electrocardiograma creo que es una pista plausible. Yo lo dejaría como QTcSLP tal cual pero con nota, si es que no tienes más info en el protocolo/resumen del protocolo. En inglés SLP = Spatial Length Pulse (o Standard Lenght Pulse), en todo caso, se refieren al ancho/longitud del pulso de voltaje aplicado para la señal del electrocardiograma. En español es mucho más frecuente usar 'ancho', que 'longitud'. Y sus unidades son milisegundos (ms). Mira: https://thoracickey.com/echocardiography-basic-principles-an... The axial resolution (resolution along the axis of the ultrasound beam) is dependent on the spatial pulse length (SPL). The shorter the SPL, the better the resolution. Figura 12. Therefore, the spatial pulse length is the distance from the beginning of a single pulse train to its end. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3843760/ "Our solution must handle the case in which any VTS signal arrives during the window in which an ECG R-wave signal is already asserted (i.e., 150 ms pulse length). This will result in an obscured VTS signal. There are also timing cases that, while not obscuring the VTS signal, might confound interpretation of the cardiac gating for one cardiac interval. These cases would obscure the arrival of the ECG R-wave during the window in which any VTS signal is already asserted (i.e., 50 ms pulse length)." En español: https://la-respuesta.com/articulos-populares/que-es-interval... https://www.siacardio.com/wp-content/uploads/2015/01/Como-in... Parámetros de ESTIMULACIÓN: el modo de estimulación, la frecuencia basal de estimulación, el voltaje a utilizarse, el ancho de pulso y la respuesta en frecuencia. https://memoriascnib.mx/index.php/memorias/article/view/885 Cada una de las señales de voltaje se controló automáticamente ajustando el valor de ciclo activo de una señal modulada por ancho de pulso, utilizando en el lazo de retroalimentación el valor de voltaje producido para la señal ECG... https://ichgcp.net/es/clinical-trials-registry/NCT00311181 POWER (Prueba de evaluación de forma de onda optimizada por ancho de pulso) ..."Sin embargo, no hay consenso sobre qué anchos de pulso son mejores para la desfibrilación.... Implantando ICD con anchos de pulso programables, este estudio utiliza el TRC Resistencia / Capacitancia para tratar de identificar los anchos de pulso óptimos." https://www.sciencedirect.com/science/article/pii/S012056331... Ancho de pulso. Es la duración de impulso generado durante la estimulación; se mide en milisegundos (ms). https://www.untumbes.edu.pe/bmedicina/libros/Libros de Ecogr... La resolución axial se relaciona sobre todo con la longitud de pulso de la señal emitida, que depende de la frecuencia, mientras que la resolución lateral se relaciona con la anchura del haz, que está más relacionada con el enfoque. Porqué usan SLP y no "pulse width" no lo tengo claro, puede ser que haya una sutileza, pero "SPL" está claro (desde mi punto de vista) que es "pulse length". http://users.cecs.anu.edu.au/~Salman.Durrani/_teaching/TA1.p... 3.1 Desired signal The heart pulse received on the skin by electrodes is a result of traveling electrical activity from the heart. At the skin, this signal has a relative potential in the range of about ~2mV. This pulse as depicted in Figure 1 has a pulse length of about 20ms and therefore has a very low bandwidth of 50Hz. -------------------------------------------------- Note added at 8 horas (2022-12-06 09:30:50 GMT) -------------------------------------------------- Lo siento, en mi respuesta puse 2 veces QTcSLP y debe ser QTcSPL, SPL = Signal / Spatial Pulse Length |
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8 hrs peer agreement (net): -1 |
| Reference: QTcSPL Reference information: My guess: QT interval correction of Sound Pression Level: Sound pressure level (SPL) is the pressure level of a sound, measured in decibels (dB). It is equal to 20 x the Log10 of the ratio of the Root Mean Square (RMS) of sound pressure to the reference of sound pressure (the reference sound pressure in air is 2 x 10-5 N/m2, or 0,00002 Pa). Or, in other words is the ratio of the absolute sound pressure against a reference level of sound in the air. How is it measured? - https://pulsarinstruments.com/news/sound-pressure-level-and-... the sound pressure level induced by the cardiac activity and the sound-pressure level generated by the gradient noise. - https://jcmr-online.biomedcentral.com/articles/10.1186/1532-... Q wave; T wave: the Q wave to the end of the T wave - https://en.wikipedia.org/wiki/QT_interval The "c" in QTc stands for corrected. - https://www.monroecc.edu/depts/pstc/ems/paramedic/paramedic-... QT intervals and T-wave variables are closely connected in hypertensive patients. - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3178939/#:~:tex... The QT interval is defined as the interval from the onset of the QRS complex (the earliest indication of ventricular depolarization) to the end of the T wave (the latest indication of ventricular repolarization). - the same link The QTc interval is the best prognostic ECG parameter in LQTS families. - https://www.sciencedirect.com/topics/biochemistry-genetics-a... The QT interval is an ECG measure that describes the time between ventricular depolarization (resulting in the “QRS complex”) and its repolarization (resulting in the “T wave”). The QT interval varies with heart rate, and thus the QT interval is typically reported adjusted for heart rate (QTc) via Bazett's formula[6] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2728459/ ΔQT was defined as the QT interval duration during exercise at this predetermined RR interval minus the QT interval duration - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3378268/ |
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