Development of an in-house bone marrow collection kit: The Catalan bone marrow transplantation group experience.

BACKGROUND AND OBJECTIVES: Bone marrow (BM) harvesting is one of the essential sources of stem cells for haematopoietic stem cell transplantation. In 2019, commercial BM collection kits became unavailable in Europe. Consequently, we created an in-house BM collection kit as an alternative. MATERIALS AND METHODS: We compared two groups of BM collections. The first collections were taken using an in-house kit from June 2022 through February 2023 and the second with a commercial kit from February 2021 through May 2022. These all took place at seven collection centres (CC). We analysed the harvest quality (cell blood count, CD34+ cells, viability, potency and sterility), the incidents occurring with each kit and the time to neutrophil and platelet engraftment in recipients. RESULTS: A total of 23 donors underwent BM harvesting with the in-house kit and 23 with the commercial one. Both cohorts were comparable regarding donor characteristics, CC and time to procedure. No statistical differences were found in harvest quality between the in-house and commercial kits. A new transfusion set was required in three BM harvests (13%) with the in-house kit because of filter clogging. The median time to neutrophil and platelet engraftment was 21 days for both cohorts and 29 days (in-house) and 33 days (commercial), p = 0.284, respectively. CONCLUSION: The in-house BM collection kit offers a real approach to solve the diminished supply of commercial kits. A higher risk of filter clogging was observed compared with commercial kits due to the lack of 850 and 500 µm filters.

Respiratory virus infections in adults with hematologic malignancies: a prospective study.

During a 2-year period, 157 consecutive episodes of respiratory virus infections that occurred in 130 patients with upper or lower respiratory tract infection were analyzed for respiratory viruses. A respiratory virus was identified in 75 episodes (48%), and several viruses were found in 13 episodes: there were a total of 56 influenza A virus infections, 14 respiratory syncytial virus infections, 8 adenovirus infections, 8 infections with parainfluenza virus types 1 or 3, and 7 enterovirus infections. On multivariate analysis, the only variable that predicted progression to pneumonia in patients with an upper respiratory tract infection was the presence of respiratory syncytial virus, whereas lymphocytopenia had a nonsignificant trend. Also, among the 38 patients who had pneumonia at any time during the episode, both respiratory syncytial virus and lymphocytopenia were commonly found. For both epidemiological and therapeutic considerations, frequent screening for respiratory viruses should be incorporated into the routine diagnostic study of patients with hematologic malignancies.

Valor del ecocardiograma bidimensional en el diagnóstico de la ruptura del septum interventricular post-infarto del miocardio / The value of two-dimensional echocardiography in the diagnosis of interventricular septal rupture post myocardial infarction

La ruptura del septum interventricular como complicación en la fase aguda de un infarto del miocardio, es infrecuente (1.3% de los casos) y de alta gravedad. Se presenta un caso así, ocurrido cuatro semanas después de instalada la zona necrótica, de localización posteroinferior. El cuadro fue diagnosticado identificando la presencia de un soplo cardíaco de reciente aparición, la instalación de insuficiencia cardíaca congestiva y los signos de un corto circuito de izquierda a derecha. El ecocardiograma bidimensional resultó ser de gran valor diagnóstico, ya que mostró la ruptura septal, confirmándose ésta por la ventriculografía. La corrección quirúrgica de dicho defecto se realizó con éxito