Fetal Hemodynamic Response to Maternal Oxygenation in Normal and Complicated Pregnancies

Author(s):  
Yan deng ◽  
Ying jin ◽  
Ran Xu ◽  
Shi Zeng

AbstractMaternal oxygenation (MO) is widely applied in obstetrics. Scholars have conducted numerous studies on maternal hyperoxygenation and have reported many theoretical and applied achievements and a number of different points of view. The main purpose of this article is to discuss the effect of maternal oxygenation on fetal circulation during normal and complicated pregnancies and to ascertain its potential side effects and research gaps in this field. In complicated pregnancies, the fetus may benefit from oxygen therapy. However, large randomized controlled trials and longitudinal studies are necessary to support the widespread application of maternal oxygenation in this context.

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiao-Li Chen ◽  
Bei-Lei Zhang ◽  
Chang Meng ◽  
Hui-Bin Huang ◽  
Bin Du

Abstract Objective Conservative oxygen strategy is recommended in acute illness while its benefit in ICU patients remains controversial. Therefore, we sought to conduct a systematic review and meta-analysis to examine such oxygen strategies’ effect and safety in ICU patients. Methods We searched PubMed, Embase, and the Cochrane database from inception to Feb 15, 2021. Randomized controlled trials (RCTs) that compared a conservative oxygen strategy to a conventional strategy in critically ill patients were included. Results were expressed as mean difference (MD) and risk ratio (RR) with a 95% confidence interval (CI). The primary outcome was the longest follow-up mortality. Heterogeneity, sensitivity analysis, and publication bias were also investigated to test the robustness of the primary outcome. Results We included seven trials with a total of 5265 patients. In general, the conventional group had significantly higher SpO2 or PaO2 than that in the conservative group. No statistically significant differences were found in the longest follow-up mortality (RR, 1.03; 95% CI, 0.97–1.10; I2=18%; P=0.34) between the two oxygen strategies when pooling studies enrolling subjects with various degrees of hypoxemia. Further sensitivity analysis showed that ICU patients with mild-to-moderate hypoxemia (PaO2/FiO2 >100 mmHg) had significantly lower mortality (RR, 1.24; 95% CI, 1.05–1.46; I2=0%; P=0.01) when receiving conservative oxygen therapy. These findings were also confirmed in other study periods. Additional, secondary outcomes of the duration of mechanical ventilation, the length of stay in the ICU and hospital, change in sequential organ failure assessment score, and adverse events were comparable between the two strategies. Conclusions Our findings indicate that conservative oxygen therapy strategy did not improve the prognosis of the overall ICU patients. The subgroup of ICU patients with mild to moderate hypoxemia might obtain prognosis benefit from such a strategy without affecting other critical clinical results.


2020 ◽  
pp. 001857872092538
Author(s):  
Ayman Antoun Reyad ◽  
Kiran Plaha ◽  
Eriny Girgis ◽  
Raafat Mishriky

Background: Fluoxetine is a serotonin-specific reuptake inhibitor antidepressant and is the only approved pharmacological treatment for major depressive disorder (MDD) in children and adolescent. Methods: We searched the published randomized controlled-trials to review fluoxetine efficacy and tolerability using the databases PubMed, EudraCT, ClinicalTrials.gov, and Cochrane Central Register of Controlled Trials for fluoxetine role in managing MDD in children and adolescents. A meta-analysis was conducted using the identified 7 clinical trials to assess efficacy using the outcomes: Children's Depression Rating Scale–Revised (CDRS-R), Clinical Global Impressions–Severity of Illness (CGI-S) and Clinical Global Impressions–Improvement (CGI-I) response rate. The risk of discontinuation due to adverse effects and common side effects were examined. Results: The mean difference in change from baseline for CDRS-R was −2.72 (95% confidence interval [CI], −3.96, −1.48) favoring fluoxetine treatment ( P < .001). Similarly, mean difference for CGI-S was −0.21 (95% CI, −0.36, −0.06). The risk ratio (RR) of discontinuing due to adverse events was 0.98 (95% CI, 0.54, 1.83), with RR for headache side effects 1.34 (95% CI, 1.03, 1.74) and rash 2.6 (95% CI, 1.32, 5.14). Conclusion: Fluoxetine demonstrates significant improvements in symptom intensity control in young patients suffering from MDD and is considered well tolerated with similar rates of trials discontinuation; however, fluoxetine was associated with a higher risk of headache and rash side effects. These findings will guide psychiatrists and pharmacists in their clinical role for supporting the care of young mental health patients.


2020 ◽  
Vol 45 (6) ◽  
pp. 784-791
Author(s):  
Roberta Fenoglio ◽  
Dario Roccatello ◽  
Savino Sciascia

<b><i>Backgrounds:</i></b> ANCA-associated vasculitis (AAV) frequently present with a chronic relapsing course. Relapse leads to an increased need for therapeutic agents and consequent toxicity. <b><i>Summary:</i></b> When referring to the available options for the management of AAV, the efficacy of glucocorticoids (GCs) is unquestionable. However, similarly unquestionable are their side effects. It has been more than 40 years since the efficacy of cyclophosphamide (CYC) as an add-on therapy to GCs in the management of necrotizing vasculitis has been proven. At the same time, concerns about the devastating side effects related to a prolonged exposure to this agent were raised. Despite the well-known side effects, the management of AAV remained centred on CYC until the early 2000s, when the pilot data first supporting the anecdotal efficacy of rituximab (RTX) were reported. However, it was not until 2010 that the non-inferiority of RTX to CYC for remission-induction in AAVs was demonstrated in 2 randomized controlled trials. <b><i>Key Messages:</i></b> Treatment of AAV has improved over the last decade, and currently available strategies are able to induce remission in the majority of the cases. Herewith, we aim to critically review available evidence and to critically address the following question: <i>How can we reduce the GCs use the management of patients with AAV</i>? Novel strategies that avoid the toxicity associated with currently used agents should be the goal. Ideally, these approaches should be GC-free.


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