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Τετάρτη 29 Ιουνίου 2022

Prevalence of anti‐Parvovirus B19 IgG and IgM and Parvovirus B19 viremia in pregnant women in an urban area of northern Italy

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Abstract

Parvovirus B19 (B19V) infection in pregnancy is mostly asymptomatic, but can cause complications including abortion and foetal hydrops. Although its infection is ubiquitous, seroprevalence among pregnant women varies according to different geographical areas. Since seroprevalence data in Italy are limited, the prevalence of antibodies and DNA in pregnant women was evaluated retrospectively, correlating the clinical situation of mothers and newborns. One thousand eight hundred and ninety-three sequential sera were examined from pregnant women (60.8% in the first trimester, 16.6% in the second one and 22.6% in the third one, respectively) for anti-B19V IgG and IgM (confirmed by immunoblot); 1402 (74.1%) were of Italian origin and 491 (25.9%) non-Italian women. Molecular tests were used to search for viral genome. One thousand three hundred and fifteen (69.5%) samples were IgG-positive, 21 (1.1%) IgM-positive for and 578 (30.5%) non-immune. The difference in Ig G seroprevalence between Italian (71.1%) and non-Italian women (64.8%) was statistically significant. Of the 21 IgM-positive women, 16 were confirmed positive also by immunoblot (prevalence: 0.8%), of which 11 were viraemic (prevalence: 0.6%; mean 1.3x104 geq/mL). Mothers were asymptomatic, and the newborns had no clinical signs of congenital infection. IgG seroprevalence in Italy is high, with differences between Italian women and non-Italian women from geographic areas with lower endemic levels of B19V. The consistent migratory flows in place could lead to an increase in the number of susceptible women. The prevalence of viremia is low, and has not been associated with evident foetal damage at birth.

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Voice Therapy Improves Acoustic and Auditory‐Perceptual Outcomes in Children

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Voice Therapy Improves Acoustic and Auditory-Perceptual Outcomes in Children

This study examined the effects of voice therapy in 129 children diagnosed with benign vocal fold lesions. Significant improvements were observed in auditory-perceptual assessments, jitter, Noise-to-Harmonic Ratio (NHR), and cepstral peak prominence (CPP) on sustained vowels, as well as CPP and Low-to-High Ratio (LHR) on connected speech. CPP effectively quantified voice therapy gains and allowed for analysis of connected speech. These findings demonstrate the value of CPP as a tool in assessing pediatric voice therapy outcomes and support the efficacy of voice therapy for children presenting with benign vocal fold lesions.


Purpose

This study employed acoustic measures as well as auditory-perceptual assessments to examine the effects of voice therapy in children presenting with benign vocal fold lesions.

Methods

A retrospective, observational cohort design was employed. Sustained vowels produced by 129 children diagnosed with benign vocal fold lesions were analyzed, as well as connected speech samples produced by 47 children. Treatment outcome measures included Consensus of Auditory-Perceptual Evaluation of Voice (CAPE-V), jitter, shimmer, Noise-to-Harmonic Ratio (NHR), cepstral peak prominence (CPP), and Low-to-High Ratio (LHR) on sustained vowels, and CPP and LHR on connected speech.

Results

Following voice therapy, significant improvements in CAPE-V ratings (p < 0.001) were observed. Additionally, jitter (p = 0.041), NHR (p = 0.019), and CPP (p < 0.01) on sustained vowels, and CPP (p = 0.002), and LHR (p = 0.008) on connected speech significantly improved following voice therapy. CPP increased with age in males but did not change in females. CAPE-V ratings and perturbation measures indicated that dysphonia was more severe in younger children pre and post-therapy.

Conclusions

Auditory-perceptual and acoustic measures demonstrated improved voice quality following voice therapy in children with dysphonia. CPP effectively quantified voice therapy gains and allowed for analysis of connected speech, in addition to sustained vowels. These findings demonstrate the value of CPP as a tool in assessing therapy outcomes and support the efficacy of voice therapy for children presenting with vocal fold lesions.

Level of Evidence

4 Laryngoscope, 2022

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Magnetic Targeting of Gadolinium Contrast to Enhance MRI of the Inner Ear in Endolymphatic Hydrops

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Magnetic Targeting of Gadolinium Contrast to Enhance MRI of the Inner Ear in Endolymphatic Hydrops

This is the first study to magnetically target gadolinium contrast to the inner ear as an effective, minimally-invasive, local delivery technique that can be tracked by magnetic resonance imaging (MRI). Better accumulation of gadolinium contrast allows better visualization and quantification of endolymphatic hydrops.


Objectives

1. Determine the feasibility and efficiency of local magnetic targeting delivery of gadolinium (Gad) contrast to the inner ear in rodents. 2. Assess any potential ototoxicity of magnetic targeting delivery of Gad in the inner ear. 3. Study the utility of magnetic targeting delivery of Gad to visualize and quantify endolymphatic hydrops (EH) in a transgenic mouse model.

Study Design

Controlled in vivo animal model study.

Methods

Paramagnetic Gad was locally delivered to the inner ear using the magnetic targeting technique in both rat and mouse models. Efficiency of contrast delivery was assessed using magnetic resonance imaging (MRI). Ototoxicity of Gad was examined with histology of the cochlea and functional audiological tests. The Phex mouse model was used to study EH, hearing loss, and balance dysfunction. Magnetic targeting delivery of Gad contrast was used in the Phex mouse model to visualize the effects of EH using MRI.

Results

Magnetic targeting improved the delivery of Gad to the inner ear and the technique was reproducible in both rat and mouse models. The delivery method did not result in microstructural damage or any significant hearing loss in a normal animal. Magnetic targeting of Gad in the Phex mouse model allowed detailed visualization and quantification of EH.

Conclusion

This study provided the first evidence of the effectiveness and efficiency of the local magnetic targeting delivery of gadolinium contrast to the inner ear and its application to the visualization and quantification of EH. Laryngoscope, 2022

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The impact of midazolam used in cataract surgery sedation on frontal QRS‐T angle

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The impact of midazolam used in cataract surgery sedation on frontal QRS-T angle

Only 177 patients who underwent elective cataract surgery were included in the study. Surgery in patients was planned with at least moderate sedation. This target was determined to be a 5–6 on the Ramsay Sedation Scale. Before the procedure, a venous route from the forearm was used to administer midazolam for sedation. The sedative effect was evaluated 2–3 minutes after a 0.05 mg/kg dose of midazolam was given. Sedation was assessed again by giving 0.5 mg every 2–3 minutes until the desired level of sedation was achieved. Electrocardiographic recordings were taken just before and within the first 5 minutes after surgery. QT, QTc intervals, Tp-e interval, Tp-e/QT, Tp-e/QTc and frontal QRS-T angle measurements got from ECG recordings. There was no significant difference between all values measured before and after the procedure. As a result, providing sedanalgesia using midazolam does not cause any change in ECG markers showing ventricular repolarization. Th erefore, the use of midazolam is safe for developing cardiac arrhythmias.


Abstract

What is known and objective

Midazolam is one of the most commonly used drugs in procedures requiring sedoanalgesia. It affects the myocardium's ventricular depolarization and repolarization. Previous studies examining the arrhythmogenic effects of midazolam yielded conclusive results. These studies are based on QT and Tp -e distances. The frontal QRS-T angle (f-[QRS-T]a) is a new electro cardiac parameter that shows the heterogeneity of ventricular electrical activity. This study aims to examine the effect of midazolam on f-(QRS- T)a and other depolarization-repolarization parameters in patients who have had cataract surgery.

Methods

The study included 177 patients administered midazolam as a sedoanalgesia during cataract surgery. The sedative effect was evaluated 2–3 minutes after a 0.05 mg/kg dose of midazolam was given. Sedation was assessed again by giving 0.5 mg every 2–3 minutes until the desired level of sedation was achieved. 12-lead electrocardiogram (ECG) recordings of all patients were taken just before and immediately after surgery. ECGs were used to calculate the QT interval, QTc interval, Tp -e interval, Tp -e/QT, Tp -e/ QTc ratios and f-(QRS-T)a.

Results and discussion

After cataract surgery, f-(QRS-T)a was unchanged compared to presurgery (29.14 ± 4.52 vs. 29.18 ± 5.39, p = 0.852). In addition, no significant change in QT(351.32 ± 21.98 vs. 351.94 ± 22.44, p = 0.091), QTc (384.05 ± 24.52 vs. 385.19 ± 26.12, p = 0.819), Tp -e interval (93.12 ± 9.60 vs. 94.44 ± 8.82, p = 0.179) and Tp -e/QT (0.27 ± 0.02 vs. 0.28 ± 0.03, p = 0.664), Tp -e/ QTc ratios (0.28 ± 0.02 vs. 0.29 ± 0.03, p = 0.655) was observed after surgery when compared to presurgery values. Significant ventricular and supraventricular arrhythmias were not observed in any patient during the operation.

What is new and conclusion

Midazolam did not affect f -(QRS-T) with classical repolarization parameters in patients who underwent cataract surgery, according to this study. Midazolam has been found to be safe for the heart in sedoanalgesia. These results show that sedation with midazolam can be performed without electrocardiogram monitoring.

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Endonasal access to the lateral poststyloid space: Far lateral extension of an endoscopic endonasal corridor

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Abstract

The styloid process constitutes the posterolateral boundary for an endonasal exposure of the infratemporal fossa. This study aims to explore the feasibility of a far-lateral extension to the lateral poststyloid space via an endonasal corridor. An endonasal dissection was performed on six cadaveric specimens (12 sides). Following an endoscopic endonasal access to the parapharyngeal space, the styloid process and the tympanic portion of the temporal bone were removed to reveal the jugular bulb and the extratemporal facial nerve. Distances from the anterior nasal spine to the relevant landmarks were measured using a surgical navigation device. Through an endonasal corridor, only the anteroinferior aspect of the jugular bulb was exposed. Conversely, the extratemporal facial nerve could be sufficiently exposed, and the deep temporal nerve could be transposed to the stylomastoid foramen. The average horizontal distances from the nasal spine to the posterior tract of V3, stylo id process, and facial nerve were 79.33 ± 3.41, 97.10 ± 4.74, and 104.77 ± 4.42 mm, respectively. Access to the lateral poststyloid space via an endonasal corridor is feasible, potentially providing an alternative approach to address select lesions extending to this region. The deep temporal nerve has a similar diameter to that of the facial nerve; thus, providing potential reinnervation of the facial nerve.

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Comparison of transfusion reactions in children and adults: A systematic review and meta‐analysis

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Abstract

Background

There are no international standards or normalizations for diagnosing and treating complications from blood transfusions. We comprehensively compared the incidence of adverse blood transfusions in children and adults.

Methods

Available literature on blood transfusion adverse reactions in children and adults prior to November 27, 2021 was collected from several electronic databases. This meta-analysis was performed using Revman 5.2 and Stata 15.1.

Results

The incidence of transfusion reactions is higher in children than in adults. Children transfused with red blood cells and platelets exhibited a higher incidence of transfusion reaction than that of adults. Moreover, the incidence of allergic and febrile non-hemolytic transfusion reactions was significantly higher in children than in adults. The incidence of some rare transfusion reactions was also significantly higher in children than in adults.

Conclusion

The incidence of transfusion reactions in children and adults is varied. Guidelines for children are necessary.

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Safety and value of pre‐transplant antibiotic allergy delabeling in a quaternary transplant center

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Abstract

Background

Self-reported antibiotic allergies, also known as antibiotic allergy labels, are common and may lead to worse patient outcomes. Within immunocompromised patients, antibiotic allergy labels can lead to inappropriate use of antimicrobials and may limit options for prophylactic and therapeutic options in the post-transplant period. While antibiotic allergy delabeling is considered an important aspect of antibiotic stewardship protocols, evidence and awareness of its application in transplant recipients is limited.

Methods

We describe our experience with an antibiotic allergy delabeling intervention in the pre-transplant evaluation period and its impact on post-transplant antimicrobial utilization. This was a retrospective analysis of patients with an antibiotic allergy label who underwent evaluation for solid organ or stem cell transplantation between 2015–2020. Patients included in this analysis were those who completed pre-transplant antibiotic allergy delabeling through our Drug Allergy Clinic and were retained in care for six months after transplant.

Results

Twenty-six of 27 patients underwent pre-transplant antibiotic allergy delabeling and safely received the delabeled antibiotic post-transplant. There were no reported side effects to the delabeled antibiotic within 6 months post-transplant. Specific examination of sulfonamide (sulfa)-antibiotic delabeling showed cost savings of $254 to $2,910 per patient in the post-transplant period compared to the use of alternative antibiotics for prophylaxis protocol.

Conclusion

Antibiotic allergy delabeling prior to transplant is safe, is of high value, and should be considered in the pre-transplant evaluation period. More resources are needed for the development of delabeling guidelines and support for broad implementation of pre-transplant antibiotic allergy delabeling programs.

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Evaluation of soft tissue and labial plate of bone stability with immediate implant in direct contact versus gap with socket shield: A randomized clinical trial with 1 year follow‐up

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Abstract

Objective

In the anterior region, the resorption of the buccal plate of bone after tooth extraction leads to contraction of the overlying soft tissues, resulting in an esthetic problem. In the socket shield technique, the buccal root section of the tooth is maintained, to preserve the buccal bone for immediate implant placement. The aim of this randomized clinical trial was to investigate the effect of leaving a gap or not between implant and retained root fragment on bone dimensions and soft tissue esthetics.

Methods

This was a two armed parallel group randomized clinical trial with allocation ratio 1:1. Patients were eligible in case they needed immediate implant replacing teeth in esthetic zone with sufficient buccal bone support. CBCT was performed immediately after the intervention and 12 months later.

Results

Forty six patients (26 females and 20 males) were enrolled in the study with 23 of them placed in contact with shield and 23 were placed palatal leaving a gap to graft with a xenograft. After 12 months, excellent soft tissue stability was reported (mean pink esthetic score at placement group A: 12.00 ± 1.60 after 12 months 12.90 ± 1.69, group B 12.62 ± 2.07 and after 12 months 12.38 ± 2.20) Using both surgical techniques. Radiographic crestal bone level changes mean for group A was −0.26 ± 0.52 and for group B -0.34 ± 0.31. There was a strong positive correlation between clinical and radiographic bone width values which was statistically significant (r = 0.782, p < 0.001). Width and thickness of keratinized gingiva showed no significant difference between values measured in both groups. Nonsignificant difference between studied groups according to the labial plate of bone clinical and radiographic changes after i mmediate implantation.

Conclusion

Within the limitations of this study, the present data seem to support that the clinical outcome of the socket shield technique with immediate implant placement placed in contact or leaving a gap gave excellent esthetic results.

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Inflammatory and oxidative stress markers in intracerebral hemorrhage: Relevance as prognostic markers for quantification of the edema volume

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Inflammatory and oxidative stress markers in intracerebral hemorrhage: Relevance as prognostic markers for quantification of the edema volume

The complex formation of post-ICH brain edema.


Abstract

We aimed to analyze the inflammatory and oxidative stress (OS) markers after intracerebral hemorrhage (ICH) and their temporal changes, interaction effects, and prognostic values as biomarkers for the prediction of the edema volume. Our prospective, longitudinal study included a cohort group of 73 conservatively treated patients with ICH, without hematoma expansion or intraventricular bleeding, which were initialized with the same treatment and provided with the same in-hospital care during the disease course. Study procedures included multilevel comprehensive analyses of clinical and neuroimaging data, aligned with the exploration of 19 inflammatory and five OS markers. White blood cells (WBC), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), neutrophilia, and lymphopenia peaked 3 days post-ICH, and they showed much stronger correlations with clinical and neuroimaging variables, when compared to the admission values. An intricate interplay among inflammatory (WBC , CRP, neutrophils, neutrophil-to-lymphocyte ratio [NLR], interleukin (IL)-6, and IL-10) and OS mechanisms (catalase activity and advanced oxidation protein products [AOPP]) was detected operating 3-days post-ICH, being assessed as relevant for prediction of the edema. The overall results suggested complex pathology of formation of post-ICH edema, via: (A) Not additive, but statistically significant synergistic interactions between CRP-ESR, neutrophils-CRP, and neutrophils-IL-6 as drivers for the edema formation; (B) Significant antagonistic effect of high protein oxidation on the CRP-edema dependence, suggesting a mechanism of potential OS-CRP negative feedback loop and redox inactivation of CRP. The final multiple regression model separated the third-day variables NLR, CRP × AOPP, and WBC, as significant prognostic biomarkers for the prediction of the edema volume, with NLR being associated with the highest effect size. Our developed mathematical equation with 3D modeling for prediction and quantification of the edema volume might be beneficial for taking timely adequate strategies for prevention of delayed neurological deteriorations.

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