Publications by authors named "Maria G Petris"

Background: The prevention of invasive fungal infections (IFIs) is crucial for paediatric haemato-oncological patients. This study evaluates the clinical efficacy and side-effects of posaconazole and liposomal amphotericin B (L-AmB) as primary prophylaxis.

Materials And Methods: This cohort study included patients aged 3 months to 21 years who received posaconazole or L-AmB (5 mg/kg twice weekly) as prophylaxis from January 2017 to March 2022 at the Hemato-oncological Pediatric Unit, University Hospital of Padua, Italy.

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Objective: To describe the implementation of a multi-step antimicrobial stewardship program in a haemato-oncology and stem cell transplantation program unit. Methods: Pre-post quasi-experimental study with two interrupted time-series analyses, conducted between 01/01/2019 and 31/12/2022 in the Paediatric Haemato-Oncology Unit of the Padua Paediatric Hospital. The interventions were: (1) 02/2020: dissemination of febrile neutropenia clinical pathways, (2) April 2021: provision of the clinical pathways via a customized App (Firstline.

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We report a case of Influenza type B (lineage Yamagata) infection in a child who received the live attenuated influenza virus vaccine before being diagnosed with B-cell acute lymphoblastic leukemia. The patient developed a mild disease that persisted for 18 days and resolved without antiviral treatment. The prolonged infection of an attenuated virus in an immunocompromised host might pose a risk of reversion or evolution to a more pathogenic strain.

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Background: Guidelines about febrile neutropenia in paediatric patients are not homogeneous; the best empiric treatment of this condition should be driven by local epidemiology. The Weighted-Incidence Syndromic Combination Antibiogram (WISCA) addresses the need for disease-specific local susceptibility evidence that could guide empiric antibiotic prescriptions based on outcome estimates of treatment regimens obtained as a weighted average of pathogen susceptibilities. This study developed a WISCA model to inform empirical antibiotic regimen selection for febrile neutropenia (FN) episodes in onco-haematological paediatric patients treated at two Italian paediatric tertiary centres.

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Objective: The objective of this study was to assess the clinical impact and outcome of the SARS-CoV-2 infection on children with cancer or those who received a hematopoietic stem cell transplantation.

Methods: AIEOP (Italian Association of Pediatric Hematology and Oncology) performed a nationwide multicenter observational cohort study, including consecutive patients between April 2020 and November 2022.

Results: Twenty-five Italian centers participated and 455 patients were enrolled.

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In children affected by malignancies and/or who received hematopoietic stem cell transplantation (HSCT), acute kidney injury (AKI) may occur causing a high mortality rate, despite the implementation of renal replacement therapy (RRT). We performed a nationwide, multicenter, retrospective, observational cohort study including consecutive patients between January 2010 and December 2019. One hundred and fourteen episodes of AKI requiring RRT coming from nine different Italian centers were included.

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COVID-19 has a mild clinical course with low mortality rate in general pediatric population, while variable outcomes have been described in children with cancer. Infectious diseases working party of the AIEOP collected data on the clinical characteristics and outcomes of SARS-CoV-2 infections in pediatric oncology/hematology patients from April 2020 to May 2021, including the second and the third waves of the pandemic in Italy. Factors potentially associated with moderate, severe, or critical COVID-19 were analyzed.

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Vaccines represent the best tool to prevent the severity course and fatal consequences of the pandemic by the new Coronavirus 2019 infection (SARS-CoV-2). Considering the limited data on vaccination of pediatric oncohematological patients, we developed a Consensus document to support the Italian pediatric hematological oncological (AIEOP) centers in a scientifically correct communication with families and patients and to promote vaccination. The topics of the Consensus were: SARS-CoV-2 infection and disease (COVID-19) in the pediatric subjects; COVID-19 vaccines (type, schedule); who and when to vaccinate; contraindications and risk of serious adverse events; rare adverse events; third dose and vaccination after COVID-19; and other general prevention measures.

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Article Synopsis
  • Prophylaxis for Pneumocystis jiroveci pneumonia (PJP) using trimethoprim/sulfamethoxazole is commonly recommended for children with blood cancers, but its effectiveness in solid tumor cases is still a topic of discussion.
  • A study conducted across 16 AIEOP centers analyzed PJP prophylaxis in patients with solid tumors, involving a total of 2,863 patients.
  • In this study, 1,046 patients did not receive prophylaxis, yet no instances of PJP were observed among them.
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species are ubiquitous pathogens causing opportunistic infections in immunocompromised patients. Clinical presentation depends on a host's immunity and can be localized or disseminated. Since there are few reports of disseminated fusariosis in children, we described an unusual case of infection in a 9-year-old child with acute lymphoblastic leukemia (ALL).

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Article Synopsis
  • - Mucormycosis is a serious fungal infection that primarily affects immunocompromised individuals, often localized in the lungs and sinuses, and can involve blood vessels, making diagnosis difficult since common blood tests are typically negative.
  • - A rare case involved a child with leukemia who developed a systemic mucormycosis infection and aortitis, initially misdiagnosed as bacterial; diagnosis was confirmed only after surgery and biopsy.
  • - Successful treatment of mucormycosis often requires both antifungal medications and urgent surgical intervention, especially in patients with prolonged fever that doesn't improve with typical antibiotic or antifungal therapies.
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Objectives: To demonstrate the efficacy of laser photobiomodulation (PBM) compared to that of placebo on severe oral mucositis (OM) in pediatric oncology patients. The primary objective was the reduction of OM grade (World Health Organization [WHO] scale) 7 days after starting PBM. Secondary objectives were reduction of pain, analgesic consumption, and incidence of side effects.

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Background/purpose: In neutropenic children with hematologic malignancies, the optimal timing of implanted central venous catheter (ICVC) insertion is unclear. The policy in our Institution has been to place ICVC at the time of diagnosis of disease regardless of the absolute neutrophil count. The impact of this strategy on the incidence of ICVC removal within 30 days of placement was evaluated in a series of patients.

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Article Synopsis
  • A study evaluated whether a 1-day/week regimen of trimethoprim/sulfamethoxazole can effectively prevent Pneumocystis pneumonia (PCP) in children undergoing cancer treatment, in contrast to more frequent dosing schedules recommended.
  • The study involved 20 pediatric hematology-oncology centers in Italy, surveying 2466 patients with various cancer diagnoses, where 27.9% were on the 1-day regimen, and only 0.08% experienced PCP cases, both from the 2-day/week group.
  • The findings suggest that a simplified 1-day prophylaxis may be adequate for PCP prevention in these patients, which could influence similar approaches for other immunocompromised individuals beyond just cancer care
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The aim of this study was to assess life goal achievements in long-term survivors (LTS) receiving cranial radiotherapy (CRT) as central nervous system (CNS) prophylaxis for acute lymphoblastic leukemia (ALL) during childhood, compared to healthy individuals. Participants in this study were 141 LTS treated in our center from 1961 to 1990. Questionnaires were mailed to LTS.

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Background: The aim of the study was to evaluate the clinical characteristics and the long-term outcome of chronic hepatitis C in a cohort of Caucasian children cured of pediatric malignancy.

Procedure: The study population included 83 consecutive patients, referred to our Center with a diagnosis of leukemia/lymphoma (50) or solid tumors (33) between 1977 and 1989 and infected with hepatitis C virus (HCV) during chemotherapy.

Results: At enrollment 77 subjects were HCV-RNA positive.

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We performed a parallel evaluation of 5 automated reticulocyte counters to produce the immature reticulocyte fraction (IRF). We analyzed 225 samples from healthy control subjects, 115 from patients with various diseases, 38 with advanced aplasia, and 22 in early erythropoietic recovery after chemotherapy or bone marrow transplantation. The reference intervals were different for each instrument (ADVIA 120, 0.

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