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At least 19 recordsLinked to original sources
PubMed1979

Fetal risk in delivery with the Shute parallel forceps: analysis of 1,503 forceps deliveries.

A total of 1,503 vaginal deliveries with the Shute parallel forceps during a 10 year period are analyzed as to the risk of instrumental damage. In this series, 35 infants died intrapartum or neonatally. Eliminating all deaths from unrelated causes, three remain in which the forceps could possibly have been implicated. Investigation of these, however, revealed in each case the presence of other concomitant and potentially lethal factors, none of which could be completely ruled out as the primary cause of fetal death. Each of the three cases is discussed in detail. We conclude from our series that the Shute forceps is useful in the delivery of premature infants, but should be employed for this maneuver only by very experienced operators. In these cases, midforceps should be performed only for critical indications. The risk of damage with parallel forceps deliveries from the pelvic floor is minimal if decision for operation is based on cardiotocographic criteria, and under favorable degrees of oxygenation. In the delivery of the immature infants, the parallel forceps can, in fact, hardly be superseded by any other instrument because of its unique controlled protection of the fragile fetal head from even the pressures of the birth canal. Delivery with the Shute forceps can be performed effectively under pudendal block or local infiltration anesthesia.

Adult↗
PubMed2014

A needleless liquid jet injection delivery method for cardiac gene therapy: a comparative evaluation versus standard routes of delivery reveals enhanced therapeutic retention and cardiac specific gene expression.

This study evaluates needleless liquid jet method and compares it with three common experimental methods: (1) intramuscular injection (IM), (2) left ventricular intracavitary infusion (LVIC), and (3) LV intracavitary infusion with aortic and pulmonary occlusion (LVIC-OCCL). Two protocols were executed. First (n&#x2009;=&#x2009;24 rats), retention of dye was evaluated 10&#xa0;min after delivery in an acute model. The acute study revealed the following: significantly higher dye retention (expressed as % myocardial cross-section area) in the left ventricle in both the liquid jet [52&#x2009;&#xb1;&#x2009;4] % and LVIC-OCCL [58&#x2009;&#xb1;&#x2009;3] % groups p&#x2009;<&#x2009;0.05 compared with IM [31&#x2009;&#xb1;&#x2009;8] % and LVIC [35&#x2009;&#xb1;&#x2009;4] %. In the second (n&#x2009;=&#x2009;16 rats), each animal received adeno-associated virus encoding green fluorescent protein (AAV.EGFP) at a single dose with terminal 6-week endpoint. In the second phase with AAV.EGFP at 6&#xa0;weeks post-delivery, a similar trend was found with liquid jet [54&#x2009;&#xb1;&#x2009;5] % and LVIC-OCCL [60&#x2009;&#xb1;&#x2009;8] % featuring more LV expression as compared with IM [30&#x2009;&#xb1;&#x2009;9] % and LVIC [23&#x2009;&#xb1;&#x2009;9] %. The IM and LVIC-OCCL cross sections revealed myocardial fibrosis. With more detailed development in future model studies, needleless liquid jet delivery offers a promising strategy to improve direct myocardial delivery.

Animals↗
PubMed1979

Incidence of preterm delivery in patients with previous preterm delivery and/or abortion.

Patients with a history of two or more pregnancies which ended spontaneously before 37 weeks' gestation had an increased risk of spontaneous labour and delivery in subsequent pregnancies. This risk was correlated with previous second trimester abortion and spontaneous preterm delivery but not with previous first trimester abortions. Patients with one or more pregnancies ending in spontaneous second trimester abortion or with preterm labour and delivery had a 38--43% risk of again delivering before term.

Abortion, Spontaneous↗
PubMed1979

Breech delivery: evaluation of the method of delivery on perinatal results and maternal morbidity.

A retrospective study of 460 single-gestation infants in breech position was conducted at the University of Colorado Medical Center to assess the impact of a policy for the selection of cases for vaginal delivery. Among infants weighing more than 2,500 grams, there was an increase in the cesarean section rate from 13% to 54%, with an associated increase in maternal morbidity from 7% to 15%. This occurred with no significant reduction in adverse perinatal outcome. However, a case-by-case review suggests that more frequent and timely cesarean sections would have further reduced perinatal morbidity and deaths among term infants. Among the infants weighing 2,500 grams or less there was an increase in cesarean births from 5% to 55% following the introduction of the strict criteria for vaginal delivery. Among the infants weighing 1,501 to 2,500 grams there was no significant difference in survival between the cesarean and vaginally delivered patients. Although infants weighing 501 to 1,500 grams delivered by cesarean section survived more frequently than did those delivered vaginally, the differences in perinatal deaths may have been due to a higher birth weight in the cesarean-delivered infants or an over-all improvement in neonatal intensive care for infants of very low birth weight.

Apgar Score↗
PubMed1977

[Induction of lung maturation in pending premature delivery and scheduled premature delivery].

At the Women's Hospital of the Medical Academy of Erfurt we have examined the efficiency of dexamethasone on fetal lungs maturation at imminent premature birth and planned untimely delivery. Dexamethasone was given in a randomized series at a dosage of 12-mg per day orally on three successive days. The effectiveness of induction was measured at the percentage of the total phospholipid fraction in the amniotic fluid and at the mortality of RDS in both groups. A successful induction with dexamethasone we can only reach after the 32nd week of pregnancy.--Because this effect is not always continuous, we recommend to make the induction of fetal lungs maturation with dexamethasone and--if it necessary--its repetition after one week conditional upon the content of total phospholipids in amniotic fluid.

Adult↗
PubMed1975

Maternal and fetal plasma levels of free corticosteroids in pathological deliveries.

Does intrauterine acidosis induce increased steroid secretion? The concentration of free steroids (CS) increases in both fetal and maternal plasma during labor and delivery. Fetal levels are higher after vaginal than after cesarean section. These differences may indicate an important role of the fetal adrenal gland in the induction of labor or they may reflect merely the fetal response to the stress of delivery. During incrased intrauterine stress steroid secretion is increased as shown here. We examined 41 mothers and their infants during pathological labor. Pathology was assessed from fetal acidosis and/or a clinically obstetric disease of the mother or fetus. The 41 cases included 9 cesarean sections, 8 forceps deliveries; 24 spontaneous deliveries of which 7 were premature. At the time of delivery the pH and CS level were determined in maternal and umbilical vessels in all cases. During spontaneous labor blood samples were also taken during the different stages of labour. A competetive protein binding assay with transcortin without fractionation of the steroids was used. Progesteron was determined by the same assay. The level of this hormone, however, remains unchanged and hence any changes reflect changes in CS. The levels of CS were correlated with the pH values and compared to previously obtained normal values. During pathological deliveries CS levels in both mother and fetus are normal as long as there is no acidosis (Fig. 1). If acidosis is present the CS level in the umbilical artery is usually higher than normal. In 13 out of 18 vaginal deliveries the CS level was above normal, in the other 5 at the upper limit of normal (Fig. 1 and 2). At the same time the a--v difference becomes smaller and sometimes even negative. No changes were noted in maternal and umbilical venous blood (Tab. I and II). Similar dependence on the pH was found for cesarean sections (Tab. III). In premature deliveries without acidosis in the umbilical artery the CS levels were lower in both mother and fetus (Tab. I). These results indicate that the fetal adrenal gland reacts to acidosis, i.e., intrauterine stress, with increased corticosteroid secretion. This rise depends on the pH of fetal blood and not on the type of delivery (Fig. 3).

Acidosis↗
PubMed1979

Method of delivery and developmental outcome at five years of age.

A controlled follow-up study examined the impact of delivery method on developmental outcome of the child. The modes of delivery investigated were low forceps delivery (188 infants), midcavity forceps delivery (51 infants), forceps rotation with forceps delivery (57 infants), manual rotation with forceps delivery (67 infants), elective caesarean section (101 infants) and spontaneous delivery (control, 207 infants). Breech presentation (100 infants) was separately compared with the vertex presentation groups. Sample selection controlled for complications during pregnancy and low birthweight and was restricted to married English-speaking mothers. The children were assessed at the age of five years on verbal and non-verbal subtests of a standardized intelligence scale, tests of gross motor coordination, and auditory and visual tests. A full paediatric examination was also performed. Breech presentation children performed less well on tests of balance and fine motor coordination and on visual acuity and stereopsis testing than children who presented in the vertex position. No deleterious effect of delivery method was found. In the absence of other complicating events (like a poor antenatal history, prematurity, and a disorganized home environment) delivery complication constitutes an early risk factor which the growing child is able to overcome.

Cesarean Section↗
PubMed1977

[Programmed breech deliveries (author's transl)].

The question whether the termination of a breech pregnancy by a programmed breech delivery would reduce the fetal risk was investigated. In 71 of 433 singleton breech deliveries (16%) the breech delivery was induced by oxytocin infusion. There were 38 primigravidas and 33 multi-gravidas. The Apgar and pH values showed the same results as in 3904 vertex deliveries with spontaneous onset of labour. The duration of labour was shortened. The incidence of Caesarean Section in programmed breech deliveries was 9.86%. All 71 infants were mature and healthy. There were no perinatal deaths. The results show that the fetal risk in breech deliveries is reduced by programmed breech delivery to the same risk as in vertex deliveries with spontaneous onset of labour.

Apgar Score↗
PubMed1977

Oxygen delivery and uptake in dogs during anemic and hypoxic hypoxia.

Three groups of dogs were anesthetized, paralyzed, and ventilated at constant rates with the spleen clamped. Two groups were isovolemically hemodiluted with warm dextran and plasma to hematocrits just above and below that at which O2 uptake (VO2) could not be maintained at preanemic levels. One of these groups was given propranolol to reduce the cardiac output response to anemia. The third group was ventilated on a low O2 gas mixture to decrease oxygen uptake. VO2 was thus limited at a high-delivery O2 pressure (PO2) in anemia and a low-delivery PO2 in hypoxic hypoxia. VO2 was reduced at a mixed venous PO2 of 45 Torr in anemia and at 17 Torr in hypoxic hypoxia. VO2, mixed venous PO2, and O2 delivery decreased precipitously at hematocrits below 10%. Once VO2 was limited by O2 availability, a single linear relationship (r = 0.91) was found for percent VO2 as a function of total O2 delivery (cardiac output X arterial O2 content) during both anemic and hypoxic hypoxia. The critical value for O2 delivery was 9.8 ml/kg-min. When O2 supply became limiting, VO2 apparently was not diffusion limited because it was more dependent on volume delivery rates than on delivery PO2.

Anemia↗
PubMed2026

Health Service Delivery Outcomes From Nursing in Genomics: A Scoping Review of the Literature (2012-2025).

AIM: This study aimed to summarize the current state of the science for "health service delivery-oriented outcomes" from nursing in genomics (2012-2025). BACKGROUND: Nurses can play a vital role in increasing access to genomic healthcare and improving outcomes for patients, families, and communities. METHODS: We conducted a scoping review of the literature in four databases (2012-2025). Articles were categorized using the Cochrane Collaboration outcome domains and sub-domains to identify salient topics and synthesize findings. RESULTS: Of 11,646 retrieved articles, 66 publications reporting "health service delivery-oriented outcomes" were included for analysis. Identified articles spanned three sub-domains: "service delivery level," "related to research," and "societal or governmental." Within sub-domains, articles were further categorized into dimensions, the most prominent being "service utilization" under the "service delivery level" sub-domain. Studies were primarily from anglophone countries and near-evenly split into interventional and noninterventional studies. Studies reported that nurses working in multidisciplinary and/or interprofessional teams are a cost-effective means to increase access to genomic healthcare and reduce burden on genetic specialists. Nurses are incorporating genomics in various settings, including oncology, pharmacogenomics, genetic counseling, rare genetic diseases, and symptom science. CONCLUSION: Despite evidence of nurses contributing to health system delivery-oriented outcomes, evidence suggests that nurses are underutilized and underprepared in genomic healthcare. IMPLICATIONS FOR NURSING: A significant barrier to integrating genomics into nursing practice is a lack of foundational knowledge and genomic competency across nursing education, clinical practice, and nursing policymakers. IMPLICATIONS FOR NURSING POLICY: Nursing leadership spanning education, research, practice, and policy domains will be critical for integrating genomics in nursing practice and improving health system delivery-oriented outcomes.

Humans↗
PubMed1979

A comparison of different methods of instrumental delivery based on electronic measurements of compression and traction.

Electronic measurements of compression, using a hydrostatic technique, were made during 44 normal deliveries and compared with the values obtained during 32 deliveries using Kielland's forceps, 21 using Neville Barnes' forceps, 48 using Moolgaoker's adjustable forceps, and 26 using Malmstrom's vacuum extractor. Electronic recordings of traction, using strain gauges, were made simultaneously during all the instrumental deliveries except those with Kielland's forceps. By exercising suitable controls over most of the multiple factors operating at the time of any delivery the authors were able to compare objectively the efficiency of the different methods of instrumental delivery. Smaller forces of compression and traction were exerted and better Apgar scores were recorded in infants delivered with the adjustable forceps than in infants delivered with the other instruments. The superiority of the adjustable forceps was most noticeable during midcavity deliveries of the malrotated head.

Apgar Score↗
PubMed2026

Closed-loop insulin delivery for glycaemic control in hospitalised and perioperative adults: A systematic review and meta-analysis of randomised controlled trials.

We evaluated whether closed-loop insulin delivery improves glycaemic control in hospitalised and perioperative adults. PubMed/MEDLINE, Embase, CENTRAL, and ClinicalTrials.gov were searched from inception to 29 June 2026 for randomised controlled trials comparing closed-loop or automated insulin delivery with usual care or conventional insulin therapy. Random-effects meta-analyses were conducted; risk of bias was assessed using RoB 2 and certainty of evidence using GRADE. Seven trials involving 375 analysed participants were included. Closed-loop insulin delivery increased time in target glucose range by 23.91 percentage points (95% CI 19.40 to 28.43; I2&#xa0;=&#xa0;0%) and reduced mean glucose by 1.79&#xa0;mmol/L (95% CI 1.06 to 2.53 lower; I2&#xa0;=&#xa0;36.3%); certainty was moderate for both outcomes. Two trials involving 69 participants reported compatible participant-level data for clinically significant hyperglycaemia, and both estimates favoured closed-loop insulin delivery, although the evidence was exploratory and imprecise. No severe hypoglycaemic events occurred in either group, precluding reliable estimation of comparative safety. Closed-loop insulin delivery may improve glycaemic process measures, but larger pragmatic trials are needed to establish clinical benefits, safety, and implementation feasibility.

Humans↗
PubMed2026

Timing of carbetocin administration in vaginal deliveries: a double-blind, randomized controlled trial.

OBJECTIVES: This study aimed to compare the efficacy of administering carbetocin before vs. after placental delivery in preventing postpartum hemorrhage (PPH) in low-risk vaginal deliveries. METHODS: The randomized controlled trial was conducted at Kartal City Hospital, Istanbul, Turkey. A total of 160 primiparous women with uncomplicated pregnancies who underwent vaginal delivery were enrolled. Participants were randomly assigned to receive 100&#x202f;&#x3bc;g of carbetocin either before or after placental delivery. The primary outcome was the incidence of PPH. Secondary outcomes included the need for additional uterotonics, manual removal of the placenta with consequent antibiotic administration, blood transfusions, maternal adverse events, and changes in hemoglobin levels at baseline and 24&#x202f;h postpartum. RESULTS: The incidence of PPH was significantly lower in the carbetocin-before group than in the carbetocin-after group (p=0.015). The carbetocin-before group had a significantly lower mean hemoglobin drop compared to the carbetocin-after group (p<0.001). The need for additional uterotonics was significantly higher in the carbetocin-after group (p<0.001). Manual placenta removal and the need for antibiotics were more frequent in the carbetocin-before group (p=0.017). No significant differences in adverse maternal events were observed between the groups. CONCLUSIONS: Administering carbetocin before placental delivery significantly reduces the incidence of PPH, blood loss, and the need for additional uterotonics. However, the increased rate of manual placenta removal necessitates individualized risk-benefit assessment; pre-placental administration may be most advantageous in women at elevated risk for PPH, in whom the hemorrhagic benefit outweighs the risks associated with manual extraction.

Humans↗
PubMed2026

Targeted Nanoparticle Delivery CRISPR/Cas9: overcoming biological barriers, enhancing stability, and improving therapeutic precision.

Clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) has emerged as a promising gene-editing platform for genetic disorders; however, its in vivo application remains limited by low delivery efficiency and biological barriers. Many CRISPR payloads fail to reach target sites due to extracellular degradation, immune clearance, and intracellular trafficking limitations. This review examines the interplay between biological barriers and nanoparticle engineering strategies for CRISPR/Cas9 delivery. A barrier-oriented engineering approach is proposed as a central framework, encompassing ligand-based surface modification for enhanced targeting and uptake, improved circulation stability via PEGylation and biomimetic coatings, and optimized payload release through endosomal escape strategies. Stimulus-responsive nanoparticle systems further enable spatiotemporal control over payload release. Nuclear targeting strategies, including optimization of nuclear localization signals (NLS) and exploitation of endogenous trafficking pathways, are highlighted as key factors for improving genome-level editing efficiency. Despite these advances, major challenges-including limited intracellular delivery efficiency, insufficient targeting precision, and safety concerns-continue to hinder clinical translation. Future directions highlight artificial intelligence-driven nanoparticle design, personalized delivery systems, and next-generation CRISPR platforms. Overall, an integrated, barrier-oriented engineering strategy is essential for advancing CRISPR/Cas9 delivery toward clinical applications, ultimately advancing global good health and well-being.

CRISPR/Cas9↗
PubMed2026

Establishment of a cBSA-mediated miRNA delivery system in Camellia sinensis and functional validation of the Cs-miR163/CsSK1 module in cold stress response.

Cold stress severely limits tea (Camellia sinensis) yield and quality. MicroRNAs (miRNAs) are key post-transcriptional regulators of plant cold responses; however, in vivo functional validation in tea plants is hindered by the lack of efficient genetic transformation and nucleic acid delivery systems. In this study, a cationized bovine serum albumin (cBSA)-mediated miRNA delivery system was established in tea plants. The cold-responsive miRNA Cs-miR163 and its target gene CsSK1 (a negative regulator of cold tolerance) were used as a model. Direct cleavage of CsSK1 mRNA by Cs-miR163 was confirmed by 5' RLM-RACE and GUS transient expression assays, and enhanced cold tolerance was demonstrated in Arabidopsis overexpression lines. The cBSA preparation protocol was optimized, yielding stable cBSA/miRNA complexes with high protective capacity across temperatures of 15-35&#x202f;&#xb0;C and pH 4.5-7.2. Delivery parameters were systematically evaluated; optimal conditions were determined as 2&#x202f;mg/mL cBSA with 10&#x202f;nM miRNA and solution uptake into 3-cm cuttings for 5 days, enhancing miRNA delivery efficiency by approximately 48-fold. Transmission electron microscopy provided direct ultrastructural evidence that cBSA/miRNA nanocomplexes are internalized into tea plant cells via adsorptive-mediated endocytosis involving electrostatic membrane adsorption, membrane invagination, and cytoplasmic release. Under optimized conditions, cBSA-mediated delivery of Cs-miR163 silenced CsSK1 expression by approximately 72%, reduced relative electrolyte leakage and ROS accumulation, and markedly enhanced cold tolerance. The regulatory role of the Cs-miR163/CsSK1 module was clarified, and the established system provides a promising strategy for functional genomics in woody plants that warrants further testing in additional species and tissues.

Camellia sinensis↗