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1. Flexible piezoelectric AlN transducers buckled through package-induced preloading for mechanical energy harvesting

Author

Mariello, M. (author), Blad, Thijs (author), Mastronardi, V. M. (author), Madaro, F. (author), Guido, F. (author), Staufer, U. (author), Tolou, N. (author), De Vittorio, M. (author), Mariello, M. (author), Blad, Thijs (author), Mastronardi, V. M. (author), Madaro, F. (author), Guido, F. (author), Staufer, U. (author), Tolou, N. (author), and De Vittorio, M. (author)

Abstract

There is a high demand for novel flexible micro-devices for energy harvesting from low-frequency and random mechanical sources. The research of new functional designs is required to strategically enhance the performances and to increase the control on mechanical flexibility. In this work we report the fabrication and characterization of bi-stable and statically balanced thin-film piezoelectric transducers based on Aluminum Nitride (AlN). The device consists of a piezoelectric layer sandwiched between two thin Molybdenum electrodes that were deposited on a Kapton substrate by reactive sputtering and patterned by UV lithography. In order to improve the out-of-plane flexibility, the mechanical design is distinguished by a post-buckled flexure that introduces a negative stiffness to compensate the otherwise positive stiffness of the system. The buckling was introduced by a new method, called Package-Induced Preloading (PIP) where the mechanisms are laminated over a package with a geometry extending out-of-plane. The induced buckling resulted in bi-stable and statically balanced mechanisms which demonstrated an enhanced voltage output during a triggered snapping step. A preliminary study shows potential for the statically balanced designs and the PIP method for wind energy harvesting, revealing prospective applications and future improvements for the development of energy harvesters., Mechatronic Systems Design, Micro and Nano Engineering

Published
2021
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2. Heparin in COVID-19 Patients Is Associated with Reduced In-Hospital Mortality: the Multicenter Italian CORIST Study

Author

Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Guaraldi, G, Menicanti, L, Mennuni, M, Parruti, G, Patti, G, Santilli, F, Signorelli, C, Vergori, A, Abete, P, Ageno, W, Agodi, A, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Astuto, M, Aucella, F, Barbieri, G, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fantoni, M, Fusco, F, Gentile, I, Gianfagna, F, Grandone, E, Graziani, E, Grisafi, L, Guarnieri, G, Larizza, G, Leone, A, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Montineri, A, Mussini, C, Musso, M, Niola, D, Odone, A, Olivieri, M, Palimodde, A, Parisi, R, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Poletti, V, Ravaglia, C, Rognoni, A, Rossato, M, Rossi, M, Sangiovanni, V, Sanrocco, C, Scorzolini, L, Sgariglia, R, Simeone, P, Taddei, E, Torti, C, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, De Caterina, R, Iacoviello, L, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Parruti, Giustino, Patti, Giuseppe, Santilli, Francesca, Signorelli, Carlo, Vergori, Alessandra, Abete, Pasquale, Ageno, Walter, Agodi, Antonella, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Astuto, Marinella, Aucella, Filippo, Barbieri, Greta, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fantoni, Massimo, Fusco, Francesco Maria, Gentile, Ivan, Gianfagna, Francesco, Grandone, Elvira, Graziani, Emauele, Grisafi, Leonardo, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Montineri, Arturo, Mussini, Cristina, Musso, Maria, Niola, Daniela, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Parisi, Roberta, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Poletti, Venerino, Ravaglia, Claudia, Rognoni, Andrea, Rossato, Marco, Rossi, Marianna, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Taddei, Eleonora, Torti, Carlo, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, De Caterina, Raffaele, Iacoviello, Licia, Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Guaraldi, G, Menicanti, L, Mennuni, M, Parruti, G, Patti, G, Santilli, F, Signorelli, C, Vergori, A, Abete, P, Ageno, W, Agodi, A, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Astuto, M, Aucella, F, Barbieri, G, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fantoni, M, Fusco, F, Gentile, I, Gianfagna, F, Grandone, E, Graziani, E, Grisafi, L, Guarnieri, G, Larizza, G, Leone, A, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Montineri, A, Mussini, C, Musso, M, Niola, D, Odone, A, Olivieri, M, Palimodde, A, Parisi, R, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Poletti, V, Ravaglia, C, Rognoni, A, Rossato, M, Rossi, M, Sangiovanni, V, Sanrocco, C, Scorzolini, L, Sgariglia, R, Simeone, P, Taddei, E, Torti, C, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, De Caterina, R, Iacoviello, L, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Parruti, Giustino, Patti, Giuseppe, Santilli, Francesca, Signorelli, Carlo, Vergori, Alessandra, Abete, Pasquale, Ageno, Walter, Agodi, Antonella, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Astuto, Marinella, Aucella, Filippo, Barbieri, Greta, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fantoni, Massimo, Fusco, Francesco Maria, Gentile, Ivan, Gianfagna, Francesco, Grandone, Elvira, Graziani, Emauele, Grisafi, Leonardo, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Montineri, Arturo, Mussini, Cristina, Musso, Maria, Niola, Daniela, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Parisi, Roberta, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Poletti, Venerino, Ravaglia, Claudia, Rognoni, Andrea, Rossato, Marco, Rossi, Marianna, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Taddei, Eleonora, Torti, Carlo, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, De Caterina, Raffaele, and Iacoviello, Licia

Abstract

INTRODUCTION: A hypercoagulable condition was described in patients with coronavirus disease 2019 (COVID-19) and proposed as a possible pathogenic mechanism contributing to disease progression and lethality.AIM: We evaluated if in-hospital administration of heparin improved survival in a large cohort of Italian COVID-19 patients.METHODS: In a retrospective observational study, 2,574 unselected patients hospitalized in 30 clinical centers in Italy from February 19, 2020 to June 5, 2020 with laboratory-confirmed severe acute respiratory syndrome coronavirus-2 infection were analyzed. The primary endpoint in a time-to event analysis was in-hospital death, comparing patients who received heparin (low-molecular-weight heparin [LMWH] or unfractionated heparin [UFH]) with patients who did not. We used multivariable Cox proportional-hazards regression models with inverse probability for treatment weighting by propensity scores.RESULTS: Out of 2,574 COVID-19 patients, 70.1% received heparin. LMWH was largely the most used formulation (99.5%). Death rates for patients receiving heparin or not were 7.4 and 14.0 per 1,000 person-days, respectively. After adjustment for propensity scores, we found a 40% lower risk of death in patients receiving heparin (hazard ratio=0.60; 95% confidence interval: 0.49-0.74; E-value=2.04). This association was particularly evident in patients with a higher severity of disease or strong coagulation activation.CONCLUSION: In-hospital heparin treatment was associated with a lower mortality, particularly in severely ill COVID-19 patients and in those with strong coagulation activation. The results from randomized clinical trials are eagerly awaited to provide clear-cut recommendations.

Published
2021

3. Flexible piezoelectric AlN transducers buckled through package-induced preloading for mechanical energy harvesting

Author

Mariello, M. (author), Blad, Thijs (author), Mastronardi, V. M. (author), Madaro, F. (author), Guido, F. (author), Staufer, U. (author), Tolou, N. (author), De Vittorio, M. (author), Mariello, M. (author), Blad, Thijs (author), Mastronardi, V. M. (author), Madaro, F. (author), Guido, F. (author), Staufer, U. (author), Tolou, N. (author), and De Vittorio, M. (author)

Abstract

There is a high demand for novel flexible micro-devices for energy harvesting from low-frequency and random mechanical sources. The research of new functional designs is required to strategically enhance the performances and to increase the control on mechanical flexibility. In this work we report the fabrication and characterization of bi-stable and statically balanced thin-film piezoelectric transducers based on Aluminum Nitride (AlN). The device consists of a piezoelectric layer sandwiched between two thin Molybdenum electrodes that were deposited on a Kapton substrate by reactive sputtering and patterned by UV lithography. In order to improve the out-of-plane flexibility, the mechanical design is distinguished by a post-buckled flexure that introduces a negative stiffness to compensate the otherwise positive stiffness of the system. The buckling was introduced by a new method, called Package-Induced Preloading (PIP) where the mechanisms are laminated over a package with a geometry extending out-of-plane. The induced buckling resulted in bi-stable and statically balanced mechanisms which demonstrated an enhanced voltage output during a triggered snapping step. A preliminary study shows potential for the statically balanced designs and the PIP method for wind energy harvesting, revealing prospective applications and future improvements for the development of energy harvesters., Mechatronic Systems Design, Micro and Nano Engineering

Published
2021
Full Text
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4. RAAS inhibitors are not associated with mortality in COVID-19 patients: findings from an observational multicenter study in Italy and a meta-analysis of 19 studies

Author

Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Gialluisi, A, Guaraldi, G, Menicanti, L, Mennuni, M, Mussinelli, R, My, I, Parruti, G, Patti, G, Perlini, S, Santilli, F, Signorelli, C, Stefanini, G, Vergori, A, Abete, P, Ageno, W, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Aucella, F, Barbieri, G, Barchitta, M, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Castiglione, G, Cianfrone, S, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Cozzi, O, Crisetti, A, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fusco, F, Gentile, I, Graziani, E, Guarnieri, G, Larizza, G, Leone, A, Lio, V, Lucia, M, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Manuele, R, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Mussini, C, Musso, M, Odone, A, Olivieri, M, Palimodde, A, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Pivato, C, Poletti, V, Ravaglia, C, Rossato, M, Rossi, M, Sabena, A, Salinaro, F, Sangiovanni, V, Sanrocco, C, Scoppettuolo, G, Scorzolini, L, Sgariglia, R, Simeone, P, Trecarichi, E, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, Iacoviello, L, De Caterina, R, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Gialluisi, Alessandro, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Mussinelli, Roberta, My, Ilaria, Parruti, Giustino, Patti, Giuseppe, Perlini, Stefano, Santilli, Francesca, Signorelli, Carlo, Stefanini, Giulio G, Vergori, Alessandra, Abete, Paolo, Ageno, Walter, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Aucella, Filippo, Barbieri, Greta, Barchitta, Martina, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Castiglione, Giacomo, Cianfrone, Stefania, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Cozzi, Ottavia, Crisetti, Annalisa, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fusco, Francesco Maria, Gentile, Ivan, Graziani, Emauele, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Lio, Veronica, Lucia, Mothanje Barbara, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Manuele, Rosa, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Mussini, Cristina, Musso, Maria, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Pivato, Carlo A, Poletti, Venerino, Ravaglia, Claudia, Rossato, Marco, Rossi, Marianna, Sabena, Anna, Salinaro, Francesco, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scoppettuolo, Giancarlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Trecarichi, Enrico Maria, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, Iacoviello, Licia, De Caterina, Raffaele, Di Castelnuovo, A, Costanzo, S, Antinori, A, Berselli, N, Blandi, L, Bonaccio, M, Cauda, R, Gialluisi, A, Guaraldi, G, Menicanti, L, Mennuni, M, Mussinelli, R, My, I, Parruti, G, Patti, G, Perlini, S, Santilli, F, Signorelli, C, Stefanini, G, Vergori, A, Abete, P, Ageno, W, Agostoni, P, Aiello, L, Al Moghazi, S, Arboretti, R, Aucella, F, Barbieri, G, Barchitta, M, Bartoloni, A, Bonfanti, P, Cacciatore, F, Caiano, L, Carrozzi, L, Cascio, A, Castiglione, G, Cianfrone, S, Ciccullo, A, Cingolani, A, Cipollone, F, Colomba, C, Colombo, C, Cozzi, O, Crisetti, A, Crosta, F, Danzi, G, D'Ardes, D, de Gaetano Donati, K, Di Gennaro, F, Di Tano, G, D'Offizi, G, Fusco, F, Gentile, I, Graziani, E, Guarnieri, G, Larizza, G, Leone, A, Lio, V, Lucia, M, Maccagni, G, Madaro, F, Maitan, S, Mancarella, S, Manuele, R, Mapelli, M, Maragna, R, Marcucci, R, Maresca, G, Marongiu, S, Marotta, C, Marra, L, Mastroianni, F, Mazzitelli, M, Mengozzi, A, Menichetti, F, Meschiari, M, Milic, J, Minutolo, F, Molena, B, Mussini, C, Musso, M, Odone, A, Olivieri, M, Palimodde, A, Pasi, E, Pesavento, R, Petri, F, Pinchera, B, Pivato, C, Poletti, V, Ravaglia, C, Rossato, M, Rossi, M, Sabena, A, Salinaro, F, Sangiovanni, V, Sanrocco, C, Scoppettuolo, G, Scorzolini, L, Sgariglia, R, Simeone, P, Trecarichi, E, Vettor, R, Vianello, A, Vinceti, M, Virano, A, Vocciante, L, Iacoviello, L, De Caterina, R, Di Castelnuovo, Augusto, Costanzo, Simona, Antinori, Andrea, Berselli, Nausicaa, Blandi, Lorenzo, Bonaccio, Marialaura, Cauda, Roberto, Gialluisi, Alessandro, Guaraldi, Giovanni, Menicanti, Lorenzo, Mennuni, Marco, Mussinelli, Roberta, My, Ilaria, Parruti, Giustino, Patti, Giuseppe, Perlini, Stefano, Santilli, Francesca, Signorelli, Carlo, Stefanini, Giulio G, Vergori, Alessandra, Abete, Paolo, Ageno, Walter, Agostoni, Piergiuseppe, Aiello, Luca, Al Moghazi, Samir, Arboretti, Rosa, Aucella, Filippo, Barbieri, Greta, Barchitta, Martina, Bartoloni, Alessandro, Bonfanti, Paolo, Cacciatore, Francesco, Caiano, Lucia, Carrozzi, Laura, Cascio, Antonio, Castiglione, Giacomo, Cianfrone, Stefania, Ciccullo, Arturo, Cingolani, Antonella, Cipollone, Francesco, Colomba, Claudia, Colombo, Crizia, Cozzi, Ottavia, Crisetti, Annalisa, Crosta, Francesca, Danzi, Gian Battista, D'Ardes, Damiano, de Gaetano Donati, Katleen, Di Gennaro, Francesco, Di Tano, Giuseppe, D'Offizi, Gianpiero, Fusco, Francesco Maria, Gentile, Ivan, Graziani, Emauele, Guarnieri, Gabriella, Larizza, Giovanni, Leone, Armando, Lio, Veronica, Lucia, Mothanje Barbara, Maccagni, Gloria, Madaro, Ferruccio, Maitan, Stefano, Mancarella, Sandro, Manuele, Rosa, Mapelli, Massimo, Maragna, Riccardo, Marcucci, Rossella, Maresca, Giulio, Marongiu, Silvia, Marotta, Claudia, Marra, Lorenzo, Mastroianni, Franco, Mazzitelli, Maria, Mengozzi, Alessandro, Menichetti, Francesco, Meschiari, Marianna, Milic, Jovana, Minutolo, Filippo, Molena, Beatrice, Mussini, Cristina, Musso, Maria, Odone, Anna, Olivieri, Marco, Palimodde, Antonella, Pasi, Emanuela, Pesavento, Raffaele, Petri, Francesco, Pinchera, Biagio, Pivato, Carlo A, Poletti, Venerino, Ravaglia, Claudia, Rossato, Marco, Rossi, Marianna, Sabena, Anna, Salinaro, Francesco, Sangiovanni, Vincenzo, Sanrocco, Carlo, Scoppettuolo, Giancarlo, Scorzolini, Laura, Sgariglia, Raffaella, Simeone, Paola Giustina, Trecarichi, Enrico Maria, Vettor, Roberto, Vianello, Andrea, Vinceti, Marco, Virano, Alexandra, Vocciante, Laura, Iacoviello, Licia, and De Caterina, Raffaele

Abstract

Objective: The hypothesis that been set forward that use of Renin Angiotensin Aldosterone System (RAAS) inhibitors is associated with COVID-19 severity. We set-up a multicenter Italian collaboration (CORIST Project, ClinicalTrials.gov ID: NCT04318418) to retrospectively investigate the relationship between RAAS inhibitors and COVID-19 in-hospital mortality. We also carried out an updated meta-analysis on the relevant studies. Methods: We analyzed 4,069 unselected patients with laboratory-confirmed SARS-CoV-2 infection and hospitalized in 34 clinical centers in Italy from February 19, 2020 to May 23, 2020. The primary end-point in a time-to event analysis was in-hospital death, comparing patients who received angiotensin-converting-enzyme inhibitors (ACE-I) or angiotensin-receptor blockers (ARB) with patients who did not. Articles for the meta-analysis were retrieved until July 13th, 2020 by searching in web-based libraries, and data were combined using the general variance-based method. Results: Out of 4,069 COVID-19 patients, 13.5% and 13.3% received ACE-I or ARB, respectively. Use of neither ACE-I nor ARB was associated with mortality (multivariable hazard ratio (HR) adjusted also for COVID-19 treatments: 0.96, 95% confidence interval 0.77-1.20 and HR=0.89, 0.67-1.19 for ACE-I and ARB, respectively). Findings were similar restricting the analysis to hypertensive (N=2,057) patients (HR=1.00, 0.78-1.26 and HR=0.88, 0.65-1.20) or when ACE-I or ARB were considered as a single group. Results from the meta-analysis (19 studies, 29,057 COVID-19 adult patients, 9,700 with hypertension) confirmed the absence of association. Conclusions: In this observational study and meta-analysis of the literature, ACE-I or ARB use was not associated with severity or in-hospital mortality in COVID-19 patients.

Published
2020

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