ORCID Profile
0000-0002-2979-1024
Current Organisations
Istituto di Radioastronomia di Bologna
,
Universität Hamburg
,
Universidade da Beira Interior Faculdade de Ciências da Saúde
,
Hospital Amato Lusitano
,
Health Sciences Research Centre
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Publications
Effects of hospital facilities on patient outcomes after cancer surgery: an international, prospective, observational study
Publisher: Elsevier BV
Date: 07-2022
Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries
Publisher: Elsevier BV
Date: 2021
A search for intercluster filaments with LOFAR and eROSITA
Publisher: Oxford University Press (OUP)
Date: 22-06-2023
Abstract: Cosmological simulations predict the presence of warm hot thermal gas in the cosmic filaments that connect galaxy clusters. This gas is thought to constitute an important part of the missing baryons in the Universe. In addition to the thermal gas, cosmic filaments could contain a population of relativistic particles and magnetic fields. A detection of magnetic fields in filaments can constrain early magnetogenesis in the cosmos. So far, the resulting diffuse synchrotron emission has only been indirectly detected. We present our search for thermal and non-thermal diffuse emission from intercluster regions of 106 paired galaxy clusters by stacking the 0.6–2.3 keV X-ray and 144 MHz radio data obtained with the eROSITA telescope onboard the Spectrum-Roentgen-Gamma (SRG) observatory and LOw Frequency ARray (LOFAR), respectively. The stacked data do not show the presence of X-ray and radio diffuse emission in the intercluster regions. This could be due to the sensitivity of the data sets and/or the limited number of cluster pairs used in this study. Assuming a constant radio emissivity in the filaments, we find that the mean radio emissivity is not higher than $1.2\\times 10^{-44}\\, {\\rm erg \\, s^{-1} \\, cm^{-3} \\, Hz^{-1}}$. Under equipartition conditions, our upper limit on the mean emissivity translates to an upper limit of $\\sim 75\\, {\\rm nG}$ for the mean magnetic field strength in the filaments, depending on the spectral index and the minimum energy cutoff. We discuss the constraint for the magnetic field strength in the context of the models for the formation of magnetic fields in cosmic filaments.
Safety of hospital discharge before return of bowel function after elective colorectal surgery
Publisher: Oxford University Press (OUP)
Date: 24-01-2020
DOI: 10.1002/BJS.11422
Abstract: Ileus is common after colorectal surgery and is associated with an increased risk of postoperative complications. Identifying features of normal bowel recovery and the appropriateness for hospital discharge is challenging. This study explored the safety of hospital discharge before the return of bowel function. A prospective, multicentre cohort study was undertaken across an international collaborative network. Adult patients undergoing elective colorectal resection between January and April 2018 were included. The main outcome of interest was readmission to hospital within 30 days of surgery. The impact of discharge timing according to the return of bowel function was explored using multivariable regression analysis. Other outcomes were postoperative complications within 30 days of surgery, measured using the Clavien–Dindo classification system. A total of 3288 patients were included in the analysis, of whom 301 (9·2 per cent) were discharged before the return of bowel function. The median duration of hospital stay for patients discharged before and after return of bowel function was 5 (i.q.r. 4–7) and 7 (6–8) days respectively (P & 0·001). There were no significant differences in rates of readmission between these groups (6·6 versus 8·0 per cent P = 0·499), and this remained the case after multivariable adjustment for baseline differences (odds ratio 0·90, 95 per cent c.i. 0·55 to 1·46 P = 0·659). Rates of postoperative complications were also similar in those discharged before versus after return of bowel function (minor: 34·7 versus 39·5 per cent major 3·3 versus 3·4 per cent P = 0·110). Discharge before return of bowel function after elective colorectal surgery appears to be safe in appropriately selected patients.
Related Organisations
Universidade Do Porto Instituto De Ciências Biomédicas Abel Salazar
Location: Portugal
Universidade Da Beira Interior Faculdade De Ciências Da Saúde
Location: Portugal
Related Funding Activities
No related grants have been discovered for Pedro Silva-Vaz.