Ensayo sobre el impacto de la pandemia de COVID-19 en las familias argentinas

El presente ensayo tratará de brindar un panorama general de cómo el aislamiento preventivo social y obligatorio, a raíz de la pandemia del COVID-19, ha tenido impacto en la sociedad argentina. Abordará, por tanto, los efectos del cumplimiento de la cuarentena en la economía, en lo social, en la educación, y en la salud física y mental de las familias y personas.Fil: Centioni, Romina. Universidad de Buenos Aires; Argentina

Efectos del entrenamiento de la fuerza resistencia con pesos altos sobre la habilidad para repetir aceleraciones en futbolistas jóvenes

En este trabajo se investigó los efectos del entrenamiento de la fuerza resistencia con pesos altos sobre la habilidad para repetir aceleraciones en futbolistas jóvenes de la localidad de Acebal. El principal hallazgo de este estudio es que con 6 semanas de entrenamiento de la fuerza resistencia con pesos altos, utilizando como único ejercicio la sentadilla, se produjo un incremento significativo en los niveles de fuerza en los futbolistas, sin embargo esta mejora no se vio reflejada con un aumento en la capacidad de repetir aceleraciones.Facultad de Humanidades y Ciencias de la Educació

Selectra 3D- guided conduction system pacing: single-center experience

Abstract Background Conduction system pacing (CSP)is becoming increasingly popular thanks to the ability to both maintain physiological electrical activation in patients with narrow QRS and restore ventricular synchrony in patients with bundle branch block (BBB). The Selectra3D introducer is a new tool able to support the correct positioning and screwing of the catheter on the bundle of His (HBP) or on the left branch (LBBP). It does exist in 3 different shapes: S, M, L (Fig. 1) based on the radius of main curvature. The internal diameter of 7.3 Fr allows it to support both the 3830 lumen-less catheter historically used for CSP, as well as standard 6Fr stylet-driven leads. Objective To evaluate the effectiveness of the Selectra3D introducer for CSP (including both HBP and LBBP), considering the procedural success rate and the lead stability (stability of electrical parameters or need for implant revision) in the medium-term follow-up. Methods and results The Selectra3D introducer was used in 56 patients' candidates for CSP (mean age 80±6 years). Pacing indications included A-V block in 21 patients, AF with slow ventricular response in 9 patients; SND in 8 patients and HF and severe ventricular dysfunction in 18 patients (of which 4 were PICM). The mean baseline EF was 40±15%. A PM was implanted in 40 patients and an ICD in 16. A standard stylet-driven lead was used in 48 cases, a fixed exposed screw lead was used in 8 patients. HBP was obtained in 21 cases and LBBP in 30 cases, while in 5 cases (8.9%) neither HBP nor LBBP could be obtained. Implants were performed via a left-sided approach in 55 cases and a right-sided approach in 1 case. The baseline QRS duration was 144±38 ms and the paced QRS duration was 118±21 ms. The electrical parameters were optimal with sensing 8.7±8 mV; impedance 625±276 ohm; threshold 1±0.5 V. During follow-up, 2 lead dislodgement (3.9%) (1 HBP and 1 LBBP) were recorded, both within 7 days after implantation. All the others showed stability of the electrical parameters at a mean follow-up of 8.4±4.2 months. Conclusions The new Selectra3D introducer supports effectively and safely the lead implant on conduction system catheters (HBP and LBBP), allowing the implant of both exposed fixed screw leads and standard stylet-driven leads, leading to procedural success>90%. The electrical parameters were optimal at implantation and remained stable during follow-up. Funding Acknowledgement Type of funding sources: None. Figure