¿Pinzamiento precoz o tardío del cordón umbilical? Una revisión sistemática de la literatura médica

Pharmacological treatment for Tourette syndrome in children and adults: What is the quality of the evidence? A systematic review

BACKGROUND

Tourette syndrome (TS) is a neurodevelopmental disorder characterised by involuntary muscle movements manifesting as motor and vocal tics. In the majority, tics are manageable without medication. Where tics cause discomfort or impair function, behavioural or pharmaceutical treatments may be considered.

AIMS

To provide a meticulous examination of the quality of evidence for the current pharmacological treatments for TS.

METHODS

PubMed and Google Scholar were searched to identify randomised, placebo-controlled trials (RCTs) of aripiprazole, risperidone, clonidine, guanfacine, haloperidol, pimozide, tiapride and sulpiride for the treatment of tics in children and adults with TS. Quality of reporting and risk of bias were assessed against the CONSORT checklist and Cochrane risk of bias criteria, respectively.

RESULTS

Seventeen RCTs were identified. Response rates reached 88.6% for aripiprazole, 68.9% for clonidine, 62.5% for risperidone and 19% for guanfacine. Statistically significant improvements were reported for all medications compared to placebo in at least one study and for at least one measure of tic severity. Most studies predated the CONSORT and Cochrane criteria and did not score highly when assessed on these measures.

CONCLUSIONS

There are relatively few placebo-controlled trials of commonly prescribed medications. Studies are often of poor quality and short duration. There is evidence for the efficacy of each medication, but no drug is clearly superior. Clonidine and guanfacine are better tolerated than antipsychotics, but less effective. There is too little evidence to determine whether adults respond differently from children.

A Feasibility Study of a Novel Delayed Cord Clamping Cart

Delaying umbilical cord clamping (DCC) for 1 min or longer following a neonate’s birth has now been recommended for preterm and term newborns by multiple professional organizations. DCC has been shown to decrease rates of iron deficiency anemia, intraventricular hemorrhage (IVH), necrotizing enterocolitis (NEC), and blood transfusion. Despite these benefits, clinicians typically cut the umbilical cord without delay in neonates requiring resuscitation and move them to a radiant warmer for further care; this effectively prevents these patients from receiving any benefits from DCC. This study evaluated the feasibility of a delayed cord clamping cart (DCCC) in low-risk neonates born via Cesarean section (CS). The DCCC is a small, sterile cart designed to facilitate neonatal resuscitation while the umbilical cord remains intact. The cart is cantilevered over the operating room (OR) table during a CS, allowing the patient to be placed onto it immediately after birth. For this study, a sample of 20 low-risk CS cases were chosen from the non-emergency Labor and Delivery surgical case list. The DCCC was utilized for 1 min of DCC in all neonates. The data collected included direct observation by research team members, recorded debriefings and surveys of clinicians as well as surveys of patients. Forty-four care team members participated in written surveys; of these, 16 (36%) were very satisfied, 12 (27%) satisfied, 13 (30%) neutral, and 3 (7%) were somewhat dissatisfied with use of the DCCC in the OR. Feedback was collected from all 20 patients, with 18 (90%) reporting that they felt safe with the device in use. This study provides support that utilizing a DCCC can facilitate DCC with an intact umbilical cord.

The Impact of Nutrition-Specific and Nutrition-Sensitive Interventions on Hemoglobin Concentrations and Anemia: A Meta-review of Systematic Reviews

Anemia is a multifactorial condition arising from inadequate nutrition, infection, chronic disease, and genetic-related etiologies. Our aim was to assess the impact of nutrition-sensitive and nutrition-specific interventions on hemoglobin (Hb) concentrations and anemia to inform the prioritization and scale-up of interventions to address the multiple causes of anemia. We performed a meta-review synthesis of information by searching multiple databases for reviews published between 1990 and 2017 and used standard methods for conducting a meta-review of reviews, including double independent screening, extraction, and quality assessment. Quantitative pooling and narrative syntheses were used to summarize information. Hb concentration and anemia outcomes were pooled in specific population groups (children aged <5 y, school-age children, and pregnant women). Methodological quality of the systematic reviews was assessed using Assessing the Methodological Quality of Systematic Reviews (AMSTAR) criteria. Of the 15,444 records screened, we identified 118 systematic reviews that met inclusion criteria. Reviews focused on nutrition-specific interventions (96%). Daily and intermittent iron supplementation, micronutrient powders, malaria treatment, use of insecticide-treated nets (ITNs), and delayed cord clamping were associated with increased Hb concentration in children aged <5 y. Among children older than 5 y, daily and intermittent iron supplementation and deworming, and in pregnant women, daily iron-folic acid supplementation, use of ITNs, and delayed cord clamping, were associated with increased Hb concentration. Similar results were obtained for the reduced risk of anemia outcome. This meta-review suggests the importance of nutrition-specific interventions for anemia and highlights the lack of evidence to understand the influence of nutrition-sensitive and multifaceted interventions on the condition.

A pilot randomized controlled trial of controlled cord traction to reduce postpartum blood loss

OBJECTIVE

To evaluate whether controlled cord traction (CCT) for management of the third stage of labor reduced postpartum blood loss compared with a "hands-off" management protocol.

METHODS

Women with imminent vaginal delivery were randomly assigned to either a CCT group or a hands-off group. The women received prophylactic oxytocin. The primary outcome was blood loss during the third stage of labor.

RESULTS

In total, 103 women were allocated to the CCT group and 101 were allocated to the hands-off group. Median blood loss in the CCT group and the hands-off group was 282.0 mL and 310.2 mL, respectively. The difference in blood loss (-28.2 mL) was not significant (95% confidence interval, -92.3 to 35.9; P=0.126). Blood collection in the hands-off group took 1.2 minutes longer than in the CCT group, which may have contributed to this difference.

CONCLUSION

CCT may reduce postpartum blood loss. The present findings support conducting a large trial to determine whether CCT can prevent postpartum hemorrhage.