RESUMEN
OBJECTIVE: To describe and analyze a new protocol for the extraction of platelet-rich plasma (PRP) for use in clinical practice and compare this technique with methods that have been previously described in the medical literature. METHODS: Sixteen blood samples from healthy volunteers were collected. PRP was prepared using our new double-spin technique, consisting of successive centrifugation of blood samples with two different spins, without opening the container. Descriptive analysis of cell counts in baseline and PRP samples was undertaken. Comparison between cell and platelet count in baseline and PRP samples, as well as the statistical analysis, were done. RESULTS: The mean platelet concentration ratio was 3.47 (SD: 0.85; 95% CI: 3.01-3.92; range: 2.48-5.71). The baseline whole blood platelet count correlated positively to the PRP platelet count (rP = 0.56; 95% CI: 0.09-0.88; P = 0.023). The PRP was enriched for lymphocytes and monocytes but presented significantly lower counts of neutrophils and eosinophils in comparison to baseline. CONCLUSION: Results show a safe and easily reproducible method to obtain PRP for use in clinical daily practice.
RESUMEN
OBJECTIVE: To evaluate differences in obstetric care between immigrant and native women in a country with free access to health care. METHODS: A cross-sectional study was carried out of immigrant mothers delivering in one of the four public hospitals in the Porto, Portugal, metropolitan area between February and December 2012. The comparison group included native Portuguese mothers who delivered in the same institutions. The participants (89 immigrant mothers and 188 Portuguese mothers) were recruited by telephone and completed a written questionnaire during a home visit. RESULTS: Immigrant women were more likely to have their first pregnancy appointment after 12 weeks of pregnancy (27.0% vs 14.4%, P = 0.011) and to have fewer than three prenatal visits (2.2% vs 0.0%, P < 0.001). They were also more likely to have had a cesarean delivery (48.3% vs 31.4%, P = 0.023), perineal laceration (48.8% vs 11.6%, P < 0.001), or postpartum hemorrhage (33.5% vs 12.3%, P < 0.001). CONCLUSION: Migrants were more prone to late prenatal care and to intrapartum complications. Unsatisfactory interactions with healthcare staff may play an important role in these findings.