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1.
Int J Gynaecol Obstet ; 134(1): 83-6, 2016 Jul.
Article de Anglais | MEDLINE | ID: mdl-27085981

RÉSUMÉ

OBJECTIVE: To understand healthcare providers' experience of incorporating uterine balloon tamponade (UBT) into the national postpartum hemorrhage (PPH) clinical pathway after UBT training. METHODS: In a qualitative study, semi-structured interviews were undertaken with healthcare providers from 50 centers in Freetown, Sierra Leone, between May and June 2014. All eligible healthcare providers (undergone UBT training, actively conducted deliveries, and treated cases of PPH since UBT training) on duty at the time of center visit were interviewed. RESULTS: Sixty-one providers at 47 facilities were interviewed. Bleeding was controlled in 28 (93%) of 30 cases of UBT device placement. Participants reported that UBT devices were easy to insert with only minor challenges, and enabled providers to manage most cases of uncontrolled PPH at their own facility and to refer others in a stable condition. Reported barriers to optimal UBT use included insufficient training and practical experience, and a scarcity of preassembled UBT devices. Facilitators of UBT use included widespread acceptance of UBT, comprehensive and enthusiastic training, and ready availability of UBT devices. CONCLUSION: UBT-used either as a primary endpoint or en route to obtaining advanced care-has been well accepted and integrated into the national PPH pathway by providers in health facilities in Freetown.


Sujet(s)
Programme clinique , Prise en charge de la maladie , Personnel de santé/enseignement et éducation , Hémorragie de la délivrance/thérapie , Tamponnement intra-utérin par sonde/statistiques et données numériques , Adolescent , Adulte , Femelle , Humains , Entretiens comme sujet , Mortalité maternelle , Grossesse , Recherche qualitative , Sierra Leone , Jeune adulte
2.
BMC Pregnancy Childbirth ; 16: 23, 2016 Jan 28.
Article de Anglais | MEDLINE | ID: mdl-26821645

RÉSUMÉ

BACKGROUND: Postpartum hemorrhage remains the leading cause of maternal mortality worldwide. Administration of uterotonics during the third stage of labor is a simple and well established intervention that can significantly decrease the development of postpartum hemorrhage. Little is known about the use of prophylactic uterotonics in peripheral health centers, where the majority of normal deliveries occur. The purpose of this study is to assess health provider current practices and determinants to the use of prophylactic uterotonics in Sierra Leone, a country with one of the highest maternal mortality ratios worldwide. METHODS: This is a mixed methods study using descriptive cross-sectional survey and qualitative interviews in community health facilities in Freetown, Sierra Leone following a comprehensive training on postpartum hemorrhage. Facilities and providers were surveyed between May and June 2014. Qualitative methods were used to identify barriers and facilitators to the use of prophylactic uterotonics. RESULTS: A total of 134 providers were surveyed at 39 periphreal health facilities. Thirteen facilities (39 %) reported an inconsistent supply of oxytocin. The majority of facilities (64 %) stored oxytocin at room temperature. Provider level, in-service training, and leadership role were significantly associated with prophylactic uterotonic use. Overall, 62 % of providers reported routine use. Midwives were most likely to routinely administer uterotonics (93 %), followed by community health officers/assistants (78 %), maternal and child health aides (56 %), and state-enrolled community health nurses (52 %). Of the providers who received in-service training, 67 % reported routine use; of those with no in-service training, 42 % reported routine use. Qualitative analysis revealed that facility protocols, widespread availability, and provider perception of utility facilitated routine use. Common barriers reported included inconsistent supply of uterotonics, lack of knowledge regarding timely administration, and provider attitude regarding utility of uterotonics following normal deliveries. CONCLUSION: There is considerable room for improvement in availability and administration of prophylactic uterotonics. Understanding barriers to routine use may aid in developing multifaceted pre-service and in-service training interventions designed to improve routine intrapartum care.


Sujet(s)
Personnel de santé/statistiques et données numériques , Troisième stade du travail , Ocytociques/usage thérapeutique , Hémorragie de la délivrance/prévention et contrôle , Types de pratiques des médecins/statistiques et données numériques , Adulte , Centres de santé communautaires , Études transversales , Accouchement (procédure)/méthodes , Femelle , Personnel de santé/psychologie , Humains , Mâle , Mortalité maternelle , Adulte d'âge moyen , Profession de sage-femme/méthodes , Profession de sage-femme/statistiques et données numériques , Ocytocine/usage thérapeutique , Grossesse , Recherche qualitative , Sierra Leone
3.
J Clin Invest ; 125(4): 1459-70, 2015 Apr.
Article de Anglais | MEDLINE | ID: mdl-25705882

RÉSUMÉ

Multiple mechanisms have been described that confer BRAF inhibitor resistance to melanomas, yet the basis of this resistance remains undefined in a sizable portion of patient samples. Here, we characterized samples from a set of patients with melanoma that included individuals at baseline diagnosis, on BRAF inhibitor treatment, and with resistant tumors at both the protein and RNA levels. Using RNA and DNA sequencing, we identified known resistance-conferring mutations in 50% (6 of 12) of the resistant samples. In parallel, targeted proteomic analysis by protein array categorized the resistant samples into 3 stable groups, 2 of which were characterized by reactivation of MAPK signaling to different levels and 1 that was MAPK independent. The molecular relevance of these classifications identified in patients was supported by both mutation data and the similarity of resistance patterns that emerged during a co-clinical trial in a genetically engineered mouse (GEM) model of melanoma that recapitulates the development of BRAF inhibitor resistance. Additionally, we defined candidate biomarkers in pre- and early-treatment patient samples that have potential for predicting clinical responses. On the basis of these observations, we suggest that BRAF inhibitor-resistant melanomas can be actionably classified using protein expression patterns, even without identification of the underlying genetic alteration.


Sujet(s)
Antinéoplasiques/pharmacologie , Analyse de profil d'expression de gènes , Mélanome expérimental/traitement médicamenteux , Mélanome/traitement médicamenteux , Protéines tumorales/antagonistes et inhibiteurs , Inhibiteurs de protéines kinases/pharmacologie , Protéines proto-oncogènes B-raf/antagonistes et inhibiteurs , Animaux , Antinéoplasiques/usage thérapeutique , Doxycycline/pharmacologie , Résistance aux médicaments antinéoplasiques , Humains , Imidazoles/pharmacologie , Imidazoles/usage thérapeutique , Mélanome/génétique , Mélanome/métabolisme , Mélanome expérimental/génétique , Mélanome expérimental/métabolisme , Souris , Protéines tumorales/biosynthèse , Protéines tumorales/génétique , Oximes/pharmacologie , Oximes/usage thérapeutique , Phosphohydrolase PTEN/physiologie , Inhibiteurs de protéines kinases/usage thérapeutique , Protéines proto-oncogènes B-raf/génétique , Tamoxifène/pharmacologie , Transgènes
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