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1.
Cureus ; 16(4): e57381, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38699115

RESUMEN

Background Clostridioides difficile infection (CDI) represents a significant healthcare challenge associated with antibiotic use and healthcare settings. While healthcare facility-onset CDI (HO-CDI) rates have been extensively studied, the incidence and risk factors of CDI in various settings, including the community, require further investigation. Aim This study aims to examine the incidence rates of CDI in a major governmental hospital in Bahrain, identify risk factors for CDI, and assess the effectiveness of infection control measures. Method We conducted a retrospective study at the Salmaniya Medical Complex (SMC), analyzing all confirmed cases of CDI over a 30-month period from January 2021 to June 2023. CDI cases were screened using glutamine dehydrogenase antigen detection and confirmed using molecular assays like polymerase chain reaction and/or toxin assays for confirmation. The study categorized CDI cases based on their onset (hospital or community) and explored associated risk factors, including antibiotic use, proton pump inhibitor (PPI) therapy, and patient demographics. Infection control practices were also evaluated for their role in managing CDI. Results About 57 new CDI cases were identified during the study period, with a HO-CDI incidence rate of 0.5 per 10,000 patient days. While HO-CDI rates remained stable, community-onset (CO)-CDI cases increased. The median patient age was 61.8 years, without notable differences between genders. Key risk factors for CDI were antimicrobial therapy, use of acid-reducing agents, age, and underlying comorbidities. The mortality rate stood at 35.1%. The ATLAS score (i.e., age, treatment with antibiotics, leukocyte count, albumin level, and serum creatinine) was a reliable predictor of mortality. Critical care admission and low albumin levels emerged as significant independent risk factors for mortality. Conclusions The study demonstrates a low incidence rate of HO-CDI at SMC, attributed to effective infection control and antibiotic stewardship programs. The overall CDI rate increased during the study period, driven by a rise in CO cases; further investigating the risk factors among this category in our study revealed that most patients were exposed to antibiotic therapy within the past three months of their CDI diagnosis. The rise in CO-CDI cases underscores the need for broader community-based interventions and awareness regarding antibiotic and PPI use.

2.
BMJ Open Ophthalmol ; 9(1)2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38565231

RESUMEN

BACKGROUND: Pterygium is a common ocular surface disorder that requires surgical intervention for treatment. Conjunctival autografts are preferred over simple excision due to lower recurrence rates. This systematic review and meta-analysis compared the modified sutureless glue-free (MSGF) method with conventional sutures (CS) for conjunctival autograft fixation in primary pterygium surgery. METHODS: A comprehensive search was conducted in MEDLINE, Embase, CENTRAL, Google Scholar and ClinicalTrials.gov for randomised controlled trials (RCTs) comparing MSGF and CS conjunctival autografts. Outcome measures included operation time, recurrence and postoperative complications. Standardised mean difference (SMD) and risk ratio (RR) were used for continuous and dichotomous outcomes, respectively. RESULTS: 11 RCTs involving 833 participants were included. The analysis revealed that MSGF had a significantly shorter operation time compared with CS (SMD -3.704, 95% CI -5.122 to -2.287, p<0.001). CS was associated with a higher risk of foreign body sensation (RR 0.22, 95% CI 0.06 to 0.74, p=0.01). MSGF was associated with a higher risk of graft dehiscence (RR 9.01, 95% CI 2.74 to 29.68, p=0.000) and graft retraction (RR 2.37, 95% CI 1.17 to 4.77, p=0.02). No significant differences were found in recurrence, graft haemorrhage, granuloma, Dellen and conjunctival oedema. CONCLUSION: Using the MSGF technique in conjunctival autograft fixation for pterygium surgery reduces operation time by relying solely on the patient's blood for fixation. However, it increases the risk of graft dehiscence and retraction. However, CS is linked to a higher likelihood of experiencing foreign body sensations. Understanding the learning curve and surgeon familiarity with novel techniques is crucial for optimising patient care and surgical outcomes, while individualised decision-making is necessary considering the advantages and disadvantages of each approach. Further research is warranted to minimise complications and optimise surgical outcomes.


Asunto(s)
Conjuntiva/anomalías , Cuerpos Extraños , Pterigion , Humanos , Pterigion/cirugía , Autoinjertos , Adhesivo de Tejido de Fibrina , Recurrencia , Conjuntiva/cirugía , Suturas
3.
Mymensingh Med J ; 33(1): 311-312, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38163810

RESUMEN

Pulmonary Embolism (PE) tolls heavy casualty on human lives because it is often misdiagnosed, and patients have limited access to quality care in resource constraint settings. It usually propagates from deep vein thrombosis of lower limbs. A Bangladeshi old lady suddenly developed symptoms on 19 March 2023. She had predisposing conditions like Type-2 Diabetes mellitus, hypertension and knee replacement surgery that made her bedridden for several years. Finding all the available parameters suggestive of PE, she received standard care but failed to have complete remission. When Empagliflozin was added to her treatment plan, she responded very well and got full recovery off her illness. This is the take away of the story.


Asunto(s)
Embolia Pulmonar , Trombosis de la Vena , Femenino , Humanos , Trombosis de la Vena/diagnóstico , Trombosis de la Vena/tratamiento farmacológico , Embolia Pulmonar/diagnóstico , Embolia Pulmonar/tratamiento farmacológico , Embolia Pulmonar/etiología , Extremidad Inferior/irrigación sanguínea
4.
Artículo en Inglés | MEDLINE | ID: mdl-37184811

RESUMEN

In the USA, suicide is a leading cause of death for adolescents ages 12 to 18 (National Institute of Mental Health (NIMH), 2019). Given the urgency of this public health crisis, this paper aims to explore the impact of a sense of school belonging and teacher-based discrimination and peer-based prejudice on suicidal ideation and attempts among Black youth. This secondary analysis used a sample of Black youth (N = 4229; Mage = 16) from the National Longitudinal Study of Adolescents to Adult Health data. Independent variables included a sense of school belonging, school-based teacher discrimination, and school-based peer prejudice; the dependent variable was suicidal thoughts and behaviors. The results of multinomial regression analyses revealed that as Black adolescents' sense of school belonging decreased, they were 35% more likely to be at risk for suicidal ideation and attempts. Findings from our study support the assertion that the school microsystem plays a substantial role in modifying the risk of suicidal behavior among Black youth.

5.
ACS Sustain Chem Eng ; 11(18): 7157-7169, 2023 May 08.
Artículo en Inglés | MEDLINE | ID: mdl-37180025

RESUMEN

The ability to assess the environmental performance of early-stage technologies at production scale is critical for sustainable process development. This paper presents a systematic methodology for uncertainty quantification in life-cycle assessment (LCA) of such technologies using global sensitivity analysis (GSA) coupled with a detailed process simulator and LCA database. This methodology accounts for uncertainty in both the background and foreground life-cycle inventories, and is enabled by lumping multiple background flows, either downstream or upstream of the foreground processes, in order to reduce the number of factors in the sensitivity analysis. A case study comparing the life-cycle impacts of two dialkylimidazolium ionic liquids is conducted to illustrate the methodology. Failure to account for the foreground process uncertainty alongside the background uncertainty is shown to underestimate the predicted variance of the end-point environmental impacts by a factor of two. Variance-based GSA furthermore reveals that only few foreground and background uncertain parameters contribute significantly to the total variance in the end-point environmental impacts. As well as emphasizing the need to account for foreground uncertainties in LCA of early-stage technologies, these results illustrate how GSA can empower more reliable decision-making in LCA.

6.
Artículo en Inglés | MEDLINE | ID: mdl-36905614

RESUMEN

Eccrine poroma is a benign adnexal neoplasm often mistaken for pyogenic granuloma, skin tag, squamous cell carcinoma, and other soft-tissue tumors. We describe a 69-year-old woman with a soft-tissue mass on the lateral aspect of her right hallux that was initially clinically diagnosed as a pyogenic granuloma. Histologic examination proved that this mass was instead an eccrine poroma, the rare benign sweat gland tumor. This case exemplifies the importance of a broad differential diagnosis, especially regarding soft-tissue masses of the lower extremity.


Asunto(s)
Granuloma Piogénico , Poroma , Neoplasias Cutáneas , Neoplasias de las Glándulas Sudoríparas , Humanos , Femenino , Anciano , Poroma/diagnóstico , Granuloma Piogénico/diagnóstico , Neoplasias de las Glándulas Sudoríparas/diagnóstico , Neoplasias Cutáneas/diagnóstico , Diagnóstico Diferencial
8.
Mymensingh Med J ; 32(1): 1-2, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36594291

RESUMEN

No Abstract.


Asunto(s)
COVID-19 , Humanos
9.
J Eat Disord ; 11(1): 5, 2023 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-36627719

RESUMEN

BACKGROUND: Binge eating disorder (BED) is defined as recurrent ingestion of an unusually large amount of food in a discrete period of time. BED has the highest prevalence of all eating disorders. Studies have shown a strong relationship between BED and both physical and psychological factors such as obesity, depression and anxiety. This research aimed to report the prevalence and associated factors of BED among Bahrainis (aged 15-30 years). METHODS: A total of 959 participants (aged 15-30 years) completed self-administered online questionnaires. BED was measured using the binge eating disorder Screener-7. The Patient Health Questionnaire-9 and General Anxiety Disorder-7 were used to measure depression and anxiety, respectively. RESULTS: Out of all participants, 21.2% had binge eating symptoms. A higher BMI, a restricted diet, depression and anxiety were associated with more frequent binge eating symptoms. Out of all associated factors, depression had the strongest association with binge eating, (rp = 0.371, p < 0.0001). However, sociodemographic variables including age and other medical conditions were not significantly associated with BED symptoms. CONCLUSION: In conclusion, the prevalence of BED symptoms was significantly high among the study participants. The results point out the crucial role of awareness of the interaction between obesity, depression and anxiety as potential risk factors for binge eating tendencies. Further research should examine their relationship with BED.


Binge eating disorder is an eating disorder characterized by the consumption of a large amount of food in a short period of time with loss of control over stopping accompanied by emotional stress during the episode. Studies have identified multiple risk factors that may contribute to binge eating, including lifestyle, psychological well-being of the individual, stress, genetics, family history, age and sex. The current study examined binge eating symptoms among adolescents and young adults aged 15­30 years to estimate the prevalence of the disorder in the Kingdom of Bahrain. Furthermore, participants were tested for depression and anxiety to investigate whether they were associated with the disorder. The results revealed that approximately one-fifth of the participants had binge eating symptoms. A high body mass index, depression and anxiety were significantly associated with binge eating symptoms. We hope this study will be reliable for use in epidemiological studies and further research.

10.
Arch Suicide Res ; 27(4): 1261-1277, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36004769

RESUMEN

OBJECTIVE: Suicide among Black adolescent youth has steadily increased in recent years, yet few studies describe how facets of social identity shape suicidal thoughts and behaviors (STBs) during this critical stage of development. Ethnic identity represents an underexplored, yet important element of social identity among Black youth that may contribute to differential associations with STBs. This study examined the association between ethnic identity and self-reported suicidal ideation, planning, and attempts. METHODS: Data were drawn from 1,170 African American (n = 810) and Caribbean Black (n = 368) adolescents aged 13-17 (Mean age = 15) that participated in the National Survey of American Life Adolescent supplement study. RESULTS: Using latent profile analyses, three patterns of ethnic identity were identified: Undifferentiated, Low Ethnic Identification, and Alienated. Caribbean Black adolescents were more likely to be in the Low Ethnic Identification class relative to the Undifferentiated class. Adolescents in the Undifferentiated group reported higher proportions of suicidal ideation, planning, and attempts compared to the remaining latent profile groups. CONCLUSION: Findings demonstrate that ethnic identity is an important aspect of social identity that can influence STBs among Black adolescents. Considering increased suicide attempts and death rates among Black youth, findings underscore the importance of examining culturally relevant developmental processes that may shape suicidal beliefs and behaviors.


Asunto(s)
Ideación Suicida , Suicidio , Adolescente , Humanos , Negro o Afroamericano , Etnicidad , Intento de Suicidio , Pueblos Caribeños
11.
Clin Ter ; 173(6): 579-584, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36373458

RESUMEN

Background: Studies have reported huge variations in the prescribing practice of warfarin. We carried out a clinical audit of warfarin use in an anticoagulation clinic of a tertiary care hospital. Methods: Patients receiving warfarin for at least 6 months were recruited and the following details were collected: demographics (age, body weight and gender); diagnoses; concomitant drugs. We calcula-ted CHA2DS2-VASc, HASBLED and SAMe-TT2R2 scores for each study participant. Statins, proton pump inhibitors, carbamazepine and amiodarone were the concomitant drugs identified with potential drug interaction with warfarin in patients. Results: Two hundred and three patients were recruited. Almost one-third of the study population had poor anticoagulation status. CHA2DS2-VASc and HASBLED scores were the significant predictors of appropriate anticoagulation. Poor anticoagulation status was observed more commonly in the first 6 months following which improvements were seen. Nearly half-of the time abnormal PT-INR was observed to be either between 2 to 2.4 (for patients with heart valve replacements) or 1.5 to 1.9 (for other indications). Significant number of patients without any potentially interacting drugs was observed with higher risk of supra-therapeutic PT-INR. Conclusion: We observed a similar proportion of patients with adequate anticoagulation in our study participants as reported in other populations; and have identified categories at risk for poor anticoagulation. It is the need of the hour to develop in-house algorithm in compliance to international standards for dose titration of warfarin.


Asunto(s)
Anticoagulantes , Warfarina , Humanos , Warfarina/uso terapéutico , Anticoagulantes/uso terapéutico , Centros de Atención Terciaria , Estudios Retrospectivos
12.
Chempluschem ; 87(11): e202200275, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36420868

RESUMEN

Tuning the amphiphilicity of (aza)phthalocyanine hydrophobic cores by introducing multiple polyethylene glycol (PEG) moieties with controlled orientations of their (non)peripheral positions is an innovative approach to fabricating water-soluble macrocyclic materials. Although many water-soluble PEGylated macrocycles have been produced in this way, the ability to generate substances with PEG tails oriented outward from the macrocyclic plane in order to obtain non-aggregated, water soluble forms remains a challenge. In this study, we resolved this issue by developing a methods for the synthesis of four new dual directional PEG containing Zn(II)/Mg(II) amphiphiles (ZnPc-PEG, MgPc-PEG, ZnAzaPc-PEG and MgAzaPc-PEG). In addition, the non-aggregating behaviour, and photophysical and photochemical properties of these PEG-complexes were elucidated.


Asunto(s)
Isoindoles , Polietilenglicoles , Polietilenglicoles/química , Agua/química , Zinc
13.
JCI Insight ; 7(20)2022 10 24.
Artículo en Inglés | MEDLINE | ID: mdl-36099022

RESUMEN

Transforming growth factor-ß1 (TGF-ß1) plays a central role in normal and aberrant wound healing, but the precise mechanism in the local environment remains elusive. Here, using a mouse model of aberrant wound healing resulting in heterotopic ossification (HO) after traumatic injury, we find autocrine TGF-ß1 signaling in macrophages, and not mesenchymal stem/progenitor cells, is critical in HO formation. In-depth single-cell transcriptomic and epigenomic analyses in combination with immunostaining of cells from the injury site demonstrated increased TGF-ß1 signaling in early infiltrating macrophages, with open chromatin regions in TGF-ß1-stimulated genes at binding sites specific for transcription factors of activated TGF-ß1 (SMAD2/3). Genetic deletion of TGF-ß1 receptor type 1 (Tgfbr1; Alk5), in macrophages, resulted in increased HO, with a trend toward decreased tendinous HO. To bypass the effect seen by altering the receptor, we administered a systemic treatment with TGF-ß1/3 ligand trap TGF-ßRII-Fc, which resulted in decreased HO formation and a delay in macrophage infiltration to the injury site. Overall, our data support the role of the TGF-ß1/ALK5 signaling pathway in HO.


Asunto(s)
Osificación Heterotópica , Factor de Crecimiento Transformador beta1 , Humanos , Cromatina/metabolismo , Ligandos , Macrófagos/metabolismo , Osificación Heterotópica/metabolismo , Receptor Tipo I de Factor de Crecimiento Transformador beta/genética , Factor de Crecimiento Transformador beta1/metabolismo , Cicatrización de Heridas , Factor de Crecimiento Transformador beta/metabolismo
14.
Mymensingh Med J ; 31(1): 194-199, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34999702

RESUMEN

Presently Coronavirus disease 2019 is a huge human misery that is almost unstoppable with little remedy on board. The disease is predominantly associated with inflammation and thrombosis. Although aspirin exhibits excellent anti-thrombotic and anti-inflammatory properties, it is yet to be explored in treating Covid-19 patients. In this article we want to bring forth its beneficial effect in Covid-19 case management. It is a retrospective observational study. Adult Covid-19 patients either diagnosed with RT-PCR (reverse transcriptase polymerized chain reaction), or categorized as probable cases (as per World Health Organization case definition protocol) by medical doctors were enrolled as participants. Data were collected from doctors' office records for the period ranging from May 2020 to September 2020 in six districts of Bangladesh. Out of 44 participants 42 were eligible (2 children excluded) for the study. Among them 11 participants took low dose aspirin (75mg daily) during the disease process. All participants in aspirin group became cured without complication or death (RR 2.2, 95% CI 1.5-3.2, p<0.001). On the other hand, no aspirin group suffered complications and deaths. The study findings revealed that complications were significantly low among aspirin users. It documented that low dose aspirin is beneficial for Covid-19 patients. Further study is warranted with larger sample size.


Asunto(s)
COVID-19 , Trombosis , Adulto , Aspirina , Bangladesh/epidemiología , Niño , Humanos , SARS-CoV-2
15.
Br J Dermatol ; 186(1): 167-173, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34388263

RESUMEN

BACKGROUND: Skin adnexal tumours (SATs) comprise a diverse range of neoplasms, which are difficult to diagnose clinically. They present in paediatric and adult populations, and may be indicative of an underlying genetic syndrome. There is a lack of recent data on the presentation of these tumours in clinical practice in European populations. OBJECTIVES: To characterize the clinical and pathological features of SATs received at a single tertiary centre over a 5-year period. METHODS: A retrospective health record audit of SATs received at the Department of Cellular Pathology, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, during the period November 2012 to October 2017 was performed. RESULTS: In total, 107 144 skin cases were received during the audit period. A total of 1615 cases of SATs from 1359 patients were included; 1570 (97·2%) were benign and 45 (2·8%) were malignant. Overall, the average age at presentation was 55 years (range 11 months to 97 years) and the male to female ratio was 0·77 : 1. Sweat gland and hair follicle SATs were most frequently excised; in adults, the most frequent tumour was hidrocystoma, and in children, pilomatrixoma occurred most often. Prebiopsy diagnosis was correct in 28% of cases. Benign SATs are often markers of an associated genetic condition, which warrants improved discrimination of sporadic from genetically related SATs. CONCLUSIONS: SATs are difficult to diagnose clinically, and clinicopathological correlation may help enhance discrimination of genetically related SATs from sporadic cases. These data have implications for clinical and dermatopathological training provision, the development of reporting standards, and genetic assessment of selected patients.


Asunto(s)
Enfermedades del Cabello , Pilomatrixoma , Neoplasias Cutáneas , Adulto , Niño , Femenino , Enfermedades del Cabello/patología , Folículo Piloso/patología , Humanos , Lactante , Masculino , Pilomatrixoma/patología , Estudios Retrospectivos , Neoplasias Cutáneas/diagnóstico , Neoplasias Cutáneas/genética , Neoplasias Cutáneas/patología
16.
Ann R Coll Surg Engl ; 103(8): 576-582, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34464568

RESUMEN

OBJECTIVE: The aim of this study was to establish a triaging system for assessment of breast referrals from primary care to ensure safe and effective breast services without compromising breast cancer management. BACKGROUND: COVID-19 was officially declared a global pandemic on 11 March 2020, and with no effective treatment available, preventing spread has been paramount. Previously, all referrals from primary care were seen in the rapid-access breast clinic (RABC). Clinic appointments exposed patients and healthcare professionals to risk. METHOD: Initial triage during the lockdown was in line with national governing body guidance, rejected low risk referrals and streamed remaining patients through a telephone consultation to RABC or discharge. A modified triage pathway streamed all patients through virtual triage to RABC, telephone clinic or discharge with advice and guidance categories. Demographics, reasons for referral and outcomes data were collected and presented as median with range and frequency with percentages. RESULTS: Initial triage (23 March-23 April 2020) found fewer referrals with a higher percentage of breast cancer diagnoses. Modified triage (22 June-17 July 2020) resulted in a 35.1% (99/282) reduction in RABC attendance. Overall cancer detection rate remained similar at 4.2% of all referrals pre-COVID (18/429) and 4.3% (12/282) during modified triage. After six months follow-up of patients not seen in RABC during the modified triage pathway, 18 patients were re-referred to RABC and none were diagnosed with cancer. CONCLUSION: A modified triage pathway has the potential to improve triage efficiency and prevent unnecessary visits during the COVID-19 pandemic. Further refinement of pathway is feasible in collaboration with primary care.


Asunto(s)
Enfermedades de la Mama/diagnóstico , COVID-19 , Pandemias , Derivación y Consulta , Triaje/organización & administración , Adulto , Estudios de Cohortes , Control de Enfermedades Transmisibles , Femenino , Humanos , Persona de Mediana Edad , Atención Primaria de Salud , Estudios Retrospectivos , Reino Unido/epidemiología
17.
Nat Commun ; 12(1): 4939, 2021 08 16.
Artículo en Inglés | MEDLINE | ID: mdl-34400627

RESUMEN

Pain is a central feature of soft tissue trauma, which under certain contexts, results in aberrant osteochondral differentiation of tissue-specific stem cells. Here, the role of sensory nerve fibers in this abnormal cell fate decision is investigated using a severe extremity injury model in mice. Soft tissue trauma results in NGF (Nerve growth factor) expression, particularly within perivascular cell types. Consequently, NGF-responsive axonal invasion occurs which precedes osteocartilaginous differentiation. Surgical denervation impedes axonal ingrowth, with significant delays in cartilage and bone formation. Likewise, either deletion of Ngf or two complementary methods to inhibit its receptor TrkA (Tropomyosin receptor kinase A) lead to similar delays in axonal invasion and osteochondral differentiation. Mechanistically, single-cell sequencing suggests a shift from TGFß to FGF signaling activation among pre-chondrogenic cells after denervation. Finally, analysis of human pathologic specimens and databases confirms the relevance of NGF-TrkA signaling in human disease. In sum, NGF-mediated TrkA-expressing axonal ingrowth drives abnormal osteochondral differentiation after soft tissue trauma. NGF-TrkA signaling inhibition may have dual therapeutic use in soft tissue trauma, both as an analgesic and negative regulator of aberrant stem cell differentiation.


Asunto(s)
Diferenciación Celular , Factor de Crecimiento Nervioso/metabolismo , Receptor trkA/metabolismo , Transducción de Señal , Heridas y Lesiones/metabolismo , Animales , Axones/metabolismo , Cartílago/metabolismo , Ratones , Ratones Endogámicos C57BL , Factor de Crecimiento Nervioso/genética , Osteogénesis , Células Madre/metabolismo , Heridas y Lesiones/patología
20.
Phys Rev Lett ; 125(9): 097002, 2020 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-32915627

RESUMEN

Charge density wave (CDW) correlations are prevalent in all copper-oxide superconductors. While CDWs in conventional metals are driven by coupling between lattice vibrations and electrons, the role of the electron-phonon coupling (EPC) in cuprate CDWs is strongly debated. Using Cu L_{3} edge resonant inelastic x-ray scattering, we study the CDW and Cu-O bond-stretching phonons in the stripe-ordered cuprate La_{1.8-x}Eu_{0.2}Sr_{x}CuO_{4+δ}. We investigate the interplay between charge order and EPC as a function of doping and temperature and find that the EPC is enhanced in a narrow momentum region around the CDW ordering vector. By detuning the incident photon energy from the absorption resonance, we extract an EPC matrix element at the CDW ordering vector of M≃0.36 eV, which decreases to M≃0.30 eV at high temperature in the absence of the CDW. Our results suggest a feedback mechanism in which the CDW enhances the EPC which, in turn, further stabilizes the CDW.

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