Effect of a short training on neonatal face-mask ventilation performance in a low resource setting.

BACKGROUND: We assessed whether a short training, effective in a high resource country, was able to improve the quality of face-mask ventilation (FMV) in a low resource setting. METHODS: Local healthcare providers at the Centre Médico-Social, Kouvè, Togo were asked to ventilate a neonatal leak-free manikin before (time-t1) and after (t2) a two-minute training session. Immediately after this section, a further two-minute training with participants aware of the data monitor was offered. Finally, a third 1-minute FMV round (t3) was performed by each participant. Ventilatory parameters were recorded using a computerized system. Primary outcome was the percentage of breaths with relevant mask leak (>25%). Secondary outcomes were percentages of breaths with a low peak inspiratory pressure (PIP<20 cm H2O), within the recommended PIP (20-35 cm H2O) and with a high PIP (>35 cm H2O). RESULTS: Twenty-six subjects participated in the study. The percentage of relevant mask leak significantly decreased (p<0.0001; ß = -0.76, SE = 0.10) from 89.7% (SD 21.5%) at t1 to 45.4% (SD 27.2%) at t2 and to 18.3% (SD 20.1%) at t3. The percentage of breaths within the recommended PIP significantly increased (p<0.0001; ß = +0.54, SE = 0.12). The percentage of breaths with PIP>35 cm H2O was 19.5% (SD 32.8%) at t1 and 39.2% (SD 37.7%) at t2 (padj = 0.27; ß = +0.61, SE = 0.36) and significantly decreased (padj = 0.01; ß = -1.61, SE = 0.55) to 6.0% (SD 15.4%) at t3. CONCLUSIONS: A 2-minute training on FMV, effective in a high resource country, had a positive effect also in a low resource setting. FMV performance further improved after an extra 2-minute verbal recall plus real time feedback. Although the training was extended, it still does not cost much time and effort. Further studies are needed to establish if these basic skills are transferred in real patients and if they are maintained over time.

A new computer-aided diagnostic tool for non-invasive characterisation of malignant ovarian masses: results of a multicentre validation study.

OBJECTIVES: To prospectively assess an innovative computer-aided diagnostic technology that quantifies characteristic features of backscattered ultrasound and theoretically allows transvaginal sonography (TVS) to discriminate benign from malignant adnexal masses. METHODS: Women (n = 264) scheduled for surgical removal of at least one ovary in five centres were included. Preoperative three-dimensional (3D)-TVS was performed and the voxel data were analysed by the new technology. The findings at 3D-TVS, serum CA125 levels and the TVS-based diagnosis were compared with histology. Cancer was deemed present when invasive or borderline cancerous processes were observed histologically. RESULTS: Among 375 removed ovaries, 141 cancers (83 adenocarcinomas, 24 borderline, 16 cases of carcinomatosis, nine of metastases and nine others) and 234 non-cancerous ovaries (107 normal, 127 benign tumours) were histologically diagnosed. The new computer-aided technology correctly identified 138/141 malignant lesions and 206/234 non-malignant tissues (98% sensitivity, 88% specificity). There were no false-negative results among the 47 FIGO stage I/II ovarian lesions. Standard TVS and CA125 had sensitivities/specificities of 94%/66% and 89%/75%, respectively. Combining standard TVS and the new technology in parallel significantly improved TVS specificity from 66% to 92% (p < 0.0001). CONCLUSIONS: Computer-aided quantification of backscattered ultrasound is a highly sensitive for the diagnosis of malignant ovarian masses.

Characterization of two constitutively active prolactin receptor variants in a cohort of 95 women with multiple breast fibroadenomas.

BACKGROUND: The role of prolactin (PRL) and its receptor (hPRLR) in promoting breast tumors is debated. We recently identified a gain-of-function hPRLR variant (I146L) in four women with multiple breast fibroadenomas (MFA) and no control subject. OBJECTIVES: The specific aims were to describe this cohort of women presenting with MFA to identify and functionally characterize germline variants of hPRL/hPRLR genes and compare phenotypes of all patients. DESIGN: Ninety-five patients prospectively underwent clinical examination, breast ultrasonography, magnetic resonance imaging, and hormonal evaluation of gonadal and lactotrope functions. We analyzed hPRL/hPRLR coding sequences and made comparisons with a control population of 194 women. Functional characterization of hPRLR variants was performed. Pathology and immunochemistry were systematically carried out after surgical removal of tumors. RESULTS: One third of patients had a family history of breast disease. No hormonal imbalance was observed, except 30.7% of explosive stimulated PRL. Prolactin receptor variants were identified in exon 5 (I76V: 10 patients, eight controls) and exon 10 (one patient, no control). Both I146L and I76V variants exhibited constitutive activity. Pathology showed common fibroadenomas and identified six benign phyllodes tumors. Estrogen and progesterone receptors were detected in 85 and 98% of samples, respectively. Ki-67 median staining was less than 5%. No phenotypic difference was observed between carriers and noncarriers of either hPRLR variant. CONCLUSION: We present the largest population with MFA ever described, 15% of which had a hPRLR exhibiting basal activity in vitro. This questions the involvement of the hPRLR in MFA etiology and the potential relevance of therapeutic inhibition of PRLR signaling in patients.

Small-bowel infarction from disseminated aspergillosis.

INTRODUCTION: Despite the use of new, effective drugs, the disseminated invasive aspergillosis often remains lethal in neutropenic patients. Diagnosis is difficult because early symptoms are nonspecific. New tools could help in diagnosis and lead to early surgery when needed. METHODS: A neutropenic patient developed an acute abdomen. CT findings were a diffuse, small-bowel distention with a thickened, distal, ileum wall. Emergency surgery was performed with resection and immediate anastomosis of the distal ileum. Pathology of the small bowel showed a wall necrosis and invasion by Aspergillus fumigatus. RESULTS: The postoperative course was uneventful except for persisting diarrhea secondary to a coexistent infection with Clostridium difficile. Aspergillus antigene in serum was positive, whereas neither pulmonary nor central nervous system aspergillosis was observed on CT scan. CONCLUSIONS: This diagnosis should be considered when neutropenic patients show abdominal pain and distention with fever. Repetition of Aspergillus antigenemia, search for others aspergillosis localizations, CT scan, and colonoscopy with biopsies should be performed until diagnosis allows the administration of early antifungal therapy.