AUTHOREA
Log in Sign Up Browse Preprints
LOG IN SIGN UP

Preprints

Explore 66,105 preprints on the Authorea Preprint Repository

A preprint on Authorea can be a complete scientific manuscript submitted to a journal, an essay, a whitepaper, or a blog post. Preprints on Authorea can contain datasets, code, figures, interactive visualizations and computational notebooks.
Read more about preprints.

Idiopathic common carotid artery laceration with no history of trauma
Natsumi Suzuki
Kento Koda

Natsumi Suzuki

and 5 more

May 28, 2022
An adult male with no history of trauma visited an emergency outpatient clinic for idiopathic progressive cervical swelling. We report a case in which, from the results of contrast enhanced computed tomography examinations, the neck was urgently opened and the carotid artery was reconstructed to save his life.
Recalcitrant Necrotic Cutaneous Ulceration: An Unusual Presentation of Granulomatosis...
Aoife Granahan
Claire Drumm

Aoife Granahan

and 4 more

May 28, 2022
A 39-year-old female with multiple necrotic cutaneous ulcerations as a presenting finding of Granulomatosis with Polyangiitis(GPA)is reported.Failing to respond to initial immunosuppressant therapy revealed a complicating codiagnosis of alpha-antitrypson deficiency(AAD).We outline the importance of this clinical association and advise that AAD should be considered in all cases of GPA
Developing Myocarditis After SARS-CoV-2 mRNA-1273 Vaccination
TAKAYUKI YAMADA

TAKAYUKI YAMADA

May 28, 2022
A 43-year-old healthy man complained of constant general fatigue for 11 days. Twenty-two days earlier, the patient received his third dose of the coronavirus disease 2019 vaccine. An electrocardiogram revealed inverted T waves with a wide spectrum of precordial lead, and echocardiography revealed diffuse left ventricular dysfunction, indicating acute myocarditis.
A rare case of symptomatic bradycardia secondary to Aripiprazole on 61-yo Male with B...
Mailing Flores
Nehemias MD Guevara

Mailing Flores

and 5 more

May 28, 2022
In psychotic disorders, such as schizophrenia and bipolar disorder, several medication classes are beneficial. There is not enough evidence of the effect of aripiprazole on heart rate (HR) and how it causes bradycardia, to the best of our knowledge there are only 2 cases of aripiprazole related to bradycardia/syncope
Contemporary Ablation Techniques for Atrial Fibrillation: An Evidence-Based Analysis
Sutopa Purkayastha
Jorge Romero

Sutopa Purkayastha

and 9 more

May 28, 2022
Since the advent of catheter ablation (CA) for atrial fibrillation (AF) in 1998, our understanding of the pathophysiology, as well as our capacity to target triggers and effectively achieve freedom from AF, has come a long way. However, as the average age of the population and the prevalence of chronic diseases increases, the progression of AF from paroxysmal (PAF) into persistent (PersAF) and long-standing persistent AF (LSPAF) is on the rise. Given the complex mechanisms involved and the presence of multiple trigger sites leading to recurrences, managing non-PAF is a challenge for electrophysiologists around the globe. Multiple ablation techniques have been investigated, some of which have shown promising results, but a standardized technique is yet to be elucidated. In this review, we outline the evidence behind contemporary ablation techniques in the treatment of AF.
The existence and averaging principle for stochastic fractional differential equation...
Jing  Zou
Danfeng Luo

Jing Zou

and 2 more

May 28, 2022
In this paper, a class of stochastic fractional differential equations (SFDEs) with impulses is considered. By virtue of the Monch’s fixed point theorem and Banach contraction principle, we explore the existence and uniqueness of solutions to the addressed system. Furthermore, with the aid of the Jensen’s inequality, Holder inequality, Burkholder-Davis-Gundy inequality, Gronwall-Bellman inequality and some novel assumptions, the averaging principle of our considered system is obtained. At the end of this paper, an example is provided to illustrate the theoretical results.
Research on Definite Solution Problem of Partial Differential Equations under Two Kin...
Xiaoxu Dong
Kaitao Cui

Xiaoxu Dong

and 5 more

May 28, 2022
This paper studies the definite solution problems of partial differential equation (PDE) under two kinds of elastic coefficients (exponential function type, polynomial function type) of external boundary conditions. Then the definite solution problems are solved by Laplace transformation, the method of undetermined coefficients and Gaver-Stehfest numerical inversion equation. Firstly, the definite solution problems of linear PDE are transformed into the boundary value problems of linear differential equations in Laplace Space by Laplace transformation. Secondly, the solutions in Laplace space of the boundary value problems of linear differential equations are obtained through using the method of undetermined coefficients. Finally, Obtain the real space solution of the definite solution of PDE under three kinds of elastic coefficients of external boundary conditions by using the Gaver-Stehfest numerical inversion equation. According to the above solution steps, this paper gives two different examples and obtains the corresponding curve analysis of the definite solution problems of PDE under two kinds of elastic coefficients of external boundary conditions. The introduction of two kinds of elastic coefficients of external boundary conditions not only expands the scope of the research on the definite solution of PDE, but also improves the matching degree between the theoretical model and the actual problems.
Darboux curves on product time scales
gülden altay suroğlu

gülden altay suroğlu

May 28, 2022
In this study, we give the structure of ruled surfaces parameterized on a product time scale. Mean and Gaussian curvatures of these surfaces are constructed on distinct time scales. Then, we obtain principal curvatures for ruled surfaces. Finally, we will clarify the issue with some examples.
Amsacrine combined with etoposide and methylprednisolone is a feasible and safe compo...
Gabi Escherich
Kerstin Mezger

Gabi Escherich

and 15 more

May 28, 2022
Background The prognosis of children with acute lymphoblastic leukemia (ALL) has improved considerably over the past decades. However, to achieve cure in patients with refractory disease or relapse new treatment options are mandatory. Methods In the multicenter-trial CoALL-08-09, an additional treatment element consisting of the rarely used chemotherapeutic agent amsacrine combined with etoposide and methylprednisolone (AEP) (amsacrine 2 x 100 mg/m2, etoposide 2 x 500 mg/m2 and methylprednisolone 4 x 1000 mg/m2) was implemented into the first-line treatment of pediatric patients with a poor treatment response at the end of induction (EOI) measured by minimal residual disease (MRD). These patients were stratified into a high-risk intensified arm (HR-I) including an AEP element at the end of consolidation. Patients with induction failure (IF), i.e. lack of cytomorphological remission EOI, were eligible for hematopoietic stem cell transplantation (HSCT) after remission had been reached later on. These patients received AEP as a part of their MRD-guided bridging-to-transplant treatment. Results A significant improvement in probality of overall survival (pOS) for the CoALL-08-09 HR-I patients was noted compared to MRD-matched patients from the preceding CoALL-07-03 trial in the absence of severe or persistent treatment-related toxicities. Relapse rate and probability of event-free survival (pEFS) did not differ significantly between trials. In patients with IF a stable or improved MRD response after AEP was observed without severe or persistent treatment-related toxicities. Conclusion In conclusion, AEP is well-tolerated as a component of the HR treatment and useful in bridging-to-transplant settings.
Non-consanguineous pediatric myelofibrosis due to MPIG6B mutations in a patient of Eu...
Leonard Yenwongfai
Ranjana Arora

Leonard Yenwongfai

and 7 more

May 28, 2022
Myelofibrosis (MF) in the pediatric setting is uncommon and appears to be pathogenically heterogeneous. MF due to intrinsic bone marrow abnormality (IMF) is distinct from adult-type Primary myelofibrosis (PMF) as they can lack the common genetic markers of clonality. To date, all but two reported patients with pediatric MF and mutated MPIG6B have been Arabic, and all reported cases have had a family history of consanguinity. Here we report the first North American patient of European ancestry with pediatric MF in whom novel compound heterozygous mutations of MPIG6B were identified.
Experimental evolution of bacterial survival on metallic copper

Feng Xu

and 5 more

May 28, 2022
A document by Xue-Xian Zhang. Click on the document to view its contents.
Stationary States of Hydrogen-Producing Reactions in Nonequilibrium Plasma
Xiaoshuang Chen
Elijah Thimsen

Xiaoshuang Chen

and 1 more

May 27, 2022
In this work, stationary states in nonequilibrium plasmas of chemical reactions that can produce hydrogen are explored, namely the water splitting and water gas shift reactions. For both reactions, the effluent from the reactor at long gas residence times in the plasma was found to be independent of the influent speciation. In other words, feeding the reactor either 0.1 H2O or 0.1H2+0.05O2 by mole produced the same effluent composition, and similarly, feeding the reactor 0.1CO+0.1H2O produced nominally the same effluent as 0.1CO2+0.1H2. For both reactions, the effluent from the plasma was found to be very far from local equilibrium at the total pressure and background temperature of the reactor. An important conclusion of this work is that special attention must be paid to the recombination zone in plasma chemical processes. The recombination zone tends to drive the gas composition from plasma stationary states back towards local equilibrium.
Human-tiger (Panthera tigris) conflict: status and trend in the Chitwan National Park...
Kshitiz Kandel
Chhatra Mani Sharma

Kshitiz Kandel

and 2 more

May 27, 2022
This study explores an understanding of human-wildlife conflict (HWC) focused on tiger, particularly the status and trend of human-tiger conflict (HTC), in three major areas of Chitwan National Park (CNP); Ayodhyapuri, Patihani and Meghauli VDCs. A set of questionnaire survey was conducted in 98 households [Ayodhyapuri (38), Patihani (30) and Meghauli (30)]. Additionally, key informant interviews were conducted and official records of CNP, National Trust for Nature Conservation (NTNC) and Department of National Park and Wildlife Conservation (DNPWC) during month of June- July, 2017 were referred. Records from 2003 to 2015 at CNP shows that highest HTC was recorded in the year 2003-2004 (235 cases), out of which human casualties were 22 (4 injured and 18 killed). The trend has declined thereafter with the lowest conflict recorded in the year 2013-2014 (17 cases), out of which human casualties were 6 (4 injured and 2 killed). A significantly higher human-tiger interaction was recorded in Ayodhypuri compared to other two study sites (χ2 = 7.88; d.f. = 2; p = 0.02). However, a contradictory trend was obtained based on our survey owing to the long compensation procedure (51.02%), less compensation (30.61%) and weak information flow (18.36%). Besides, the development of dense community forest lured the tigers to the nearby buffer zone causing conflicts with tigers. Nevertheless, the perception of respondent relative to tiger conservation was found to be positive. Conservation education, awareness programs along with adequate and prompt compensation against damages coupled with regular/timely monitoring of tigers may help to reduce human-tiger conflicts. Keywords: Human-tiger conflict; Compensation; Livestock depredation; Retaliation
Patterns of stress response to foreign eggs by a rejecter host of an obligate avian b...
Mikus Abolins-Abols
Mark Peterson

Mikus Abolins-Abols

and 6 more

May 27, 2022
One of the most effective defenses of avian hosts against obligate brood parasites is the ejection of parasitic eggs from the nests. Despite the clear fitness benefits of this behavior, individuals within so-called “egg rejecter” host species still show substantial variation in their propensity to eliminate foreign eggs from the nest. We argue that this variation can be further understood by studying the physiological mechanisms of host responses to brood parasitic egg stimuli: independent lines of research increasingly support the hypothesis that stress-related physiological response to parasitic eggs may trigger egg rejection. The “stress-mediated egg rejection” hypothesis requires that hosts activate the stress-response when responding to parasitic eggs. We tested this prediction by experimentally parasitizing incubating American robins Turdus migratorius, an egg rejecter host to obligate brood parasitic brown-headed cowbirds Molothrus ater, with mimetic or non-mimetic model eggs. To assess the stress response, we measured the heart rate in incubating females immediately after experimental parasitism. We also measured plasma corticosterone and, in a subset of birds, used RNA-sequencing to analyze the expression of proopiomelanocortin (POMC), a precursor of adrenocorticotropic hormone (ACTH), two hours after experimental parasitism. We found that egg type had no effect on heart rate. Two hours following experimental parasitism, plasma corticosterone did not differ between the differently colored model egg treatments or between rejecter and accepter females within the non-mimetic treatment. However, females exposed to non-mimetic eggs showed an upregulation of POMC gene expression in the pituitary compared to females treated with mimetic eggs. Our findings suggest that parasitic eggs may activate the stress-related hypothalamic-pituitary-adrenal axis in an egg-rejecter host species, although the dynamics of this response are not yet understood.
Temporal and biting dynamics of the malaria vectors Anopheles gambiae and Anopheles c...
Claire Sangbakembi-Ngounou
Carine Ngoagouni

Claire Sangbakembi-Ngounou

and 6 more

May 27, 2022
The chromosomal rearrangement 2La has been directly involved in the ecological and deadly epidemiological success of the malaria mosquitoes Anopheles gambiae and Anopheles coluzzii in sub-Saharan Africa. However, little is known about the biological and ecological factors that drive the local and temporal dynamics of this inversion in both species. Here, we performed a year-round longitudinal survey in Bangui, Central African Republic. We monthly sampled An. gambiae and An. coluzzii mosquitoes indoor and outdoor using human landing catches for 48 hours non-stop. We molecularly karyotyped all specimens to study the 2La inversion frequency variations, and monitored the mosquito spatial and temporal biting behavior throughout the year. In total, we successfully karyotyped 5121 An. gambiae and 986 An. coluzzii specimens. The 2La inversion frequency was higher in An. coluzzii than in An. gambiae across the year. In An. gambiae and An. coluzzii, the inversion frequency or karyotypes did not influence the biting behavior, either location or time. Moreover, the inversion frequency variation in both species was also independent of local climatic changes. Overall, our results revealed that in Bangui, the 2La inversion segregates at different frequency in each species, but this is not influenced by their trophic behavior. Studying the impact of urban settings and the population genetic structure of these two An. gambiae complex members could bring insights into the intrinsic relationship between 2La inversion and local conditions. More studies are needed to understand the polymorphic equilibrium of this inversion in Bangui.
LRP6 modulates the phosphorylation of Cx43 via Gαs in ventricular tachycardia of myoc...

Xu-Min Zhang

and 4 more

May 27, 2022
Background Ventricular tachycardia (VT) and ventricular fibrillation are the most causes of early death in patients with myocardial infarction (MI). This study was aimed to explore whether LRP6 and its upstream genes circRNA1615 and miR-152-3p modulated the phosphorylation of Connexin-43 (Cx43) via Gαs in VT of MI. Method we constructed the hypoxia cardiomyocyte model and AMI mice, and explored the modulation relationship of LRP6 and its upstream genes circRNA1615 and miR-152-3p. In addition, the immunoblot analysis with monoclonal and polyclonal antibodies were used to detect whether LRP6 and Cx43 were phosphorylated, further investigated that the LRP6 regulated the phosphorylation of its downstream target Cx43 via G-protein alpha subunit Gαs by using cell transfection, FISH assay, HE staining, RTqPCR, and Western blot techniques. Result LRP6 mRNA expression was significantly reduced in AMI group compared with the control group. Hypoxia could inhibit the protein and phosphorylation levels of LRP6 and Cx43. The expression of circRNA1615 in AMI mice was significantly decreased, but overexpression of circRNA1615 significantly reversed the inhibitory effect of AMI. Also overexpression of circRNA1615 could weaken the effect of miR-152-3p mimic, and the miR-152-3p mimic increased the hypoxia injury of LRP6 and Cx43, further LRP6 interference fragments could aggravate hypoxia injury of Cx43. The overexpression of LRP6 could significantly increase the protein level and phosphorylation level of Cx43, but the interference with LRP6 showed the opposite trend. Noticeably, the interference with Gαs weakened the protein and phosphorylation levels of Cx43, however, the interference with LRP6 and Gαs further inhibited the protein and phosphorylation levels of Cx43. Finally, the transcriptions of circRNA1615 and LRP6 were inhibited in AMI, but the transcription of miR-152-3p was promoted, and the overexpression of circRNA1615 could weaken the damage effect and VT of AMI. Conclusion LRP6 and its upstream genes circRNA1615 and miR-152-3p modulated the phosphorylation of Cx43 via Gαs in VT of MI.
Direct growth of hierarchically Ni3S2 nanostructures on nickel foam for enhanced hydr...
Xiaokang Zhong
Mure Ali

Xiaokang Zhong

and 8 more

May 27, 2022
Hydrogen is not only a promising energy, but also widely used in inflammation treatment and sports training. The key to these applications is to obtain purity hydrogen conveniently. Water electrolysis provides a green and sustainable method for hydrogen production, but the urgent problem is to develop low-cost and efficient electrocatalysts. In this work, hierarchically porous Ni3S2 nanostructures, which the flocculent two-dimensional Ni3S2 is coated on the surface of Ni3S2 nanosheets, were successfully grown on nickel foam through a facile two-step hydrothermal reaction. The hierarchically porous Ni3S2 nanostructures has a large specific surface area can expose more active sites and facilitates desorption of bubbles. Moreover, the theoretical calculation indicated that the dimensional confinement effect of metallic Ni3S2 improves the carrier concentration and conductivity. Therefore, the hierarchically porous Ni3S2 nanostructures on nickel foam exhibited enhanced hydrogen evolution reaction and good catalytic stability. This work sheds some light on improving the catalytic performance of metallic compounds.
Cardioneuroablation: don’t underestimate the posteromedial left atrial ganglionated p...
Ciro Ascione
Léa Benabou

Ciro Ascione

and 19 more

May 27, 2022
Introduction Cardioneuroablation (CNA) is a technique used to modulate cardiac parasympathetic tone in patients with sino-atrial (SA) and atrio-ventricular (AV) vagally mediated syncope. We describe the case of a patient who developed AV block after a first procedure of CNA, requiring a second procedure. Case presentation A 47-Year-old man presented with recurrent syncope (daily episodes) associated with high vagal tone conditions. An ECG monitoring showed frequent episodes of sinus bradycardia and sinus arrest, with pauses up to 17 seconds. AV node conduction impairment was never identified. A CNA procedure targeting the right superior and posterior ganglionated plexi (GPs), both from the left and right atrium, was performed with acute success. The subsequent night, repetitive episodes of AV block with normal sinus rate were observed. A second procedure was performed targeting the posteromedial left GP. Follow-up at 4 months showed no recurrent syncopal event and no bradyarrhythmia episode on the implantable loop recorder. Conclusion This case report demonstrates that ablation limited to the right superior and posterior GPs may not be enough for neurocardiogenic syncope and a more systematic approach, extending the ablation to the posteromedial left GP, should be considered.
Measuring impact through health information system- a case study on maternal and peri...
Abu Sadat Sayem
Jens Kaasbøll

Abu Sadat Sayem

and 3 more

May 27, 2022
Background: The health sector is one of the outstanding performers through remarkable digitalization in health. Maternal and Perinatal Death Surveillance and Response (MPDSR) was implemented in Bangladesh to investigate the causes of maternal and perinatal deaths in community and health facilities. Objectives: The purpose was to explore information systems available to assess the MPDSR program status, the planning process, gaps and barriers and actions developed using real-time information. Data Collection and Analysis: This study included both primary and secondary data analysis. Six key informant interviews and MPDSR action plans were reviewed from seven districts. Secondary collected from 27 districts. Results: This study revealed that the government health information systems could notify 62% of the maternal deaths and 29% of the neonatal deaths. Despite the challenges in data quality, the health managers developed action plans. The death and service data showed positive changes in most of the districts despite COVID 19 pandemic. Information systems like the MPDSR dashboard and RMNCAH scorecard could is used as tools to assess the impact of actions in a real-time manner. Major gaps are weak monitoring, non-functional MPDSR committees and incoordination, IT issues, blaming culture, and lack of capacity in analyzing data. Conclusion: The outcome of the MPDSR program depends upon how the data is converted to action and measuring the impact. Innovative data visualization tools like health dashboards, scorecards, and administrative data can play a pivotal role in measuring and evidence-based planning. The major challenge remains with capturing all deaths and weak data analysis capacity.
Preferences for deinfibulation (opening) surgery and female genital mutilation servic...
Laura Jones
Benjamin Costello

Laura Jones

and 12 more

May 27, 2022
Objective: To explore the views of female genital mutilation (FGM) survivors, men, and healthcare professionals (HCPs) on the timing of deinfibulation surgery and NHS service provision. Design: Qualitative study informed by the sound of silence framework. Setting: Survivors and men were recruited from three FGM prevalent areas of England. HCPs and stakeholders were from across the UK. Sample: 44 survivors, 13 men and 44 HCPs. 10 participants at two community workshops and 30 stakeholders at a national workshop. Methods: Hybrid framework analysis of 101 interviews and three workshops. Results: There was no consensus across groups on the optimal timing of deinfibulation for survivors who wished to be deinfibulated. Within group, survivors expressed a preference for deinfibulation pre-pregnancy and HCPs antenatal deinfibulation. There was no consensus for men. Participants reported that deinfibulation should take place in a hospital setting and be undertaken by a suitable HCP. Decision making around deinfibulation was complex but for those who underwent surgery it helped to mitigate FGM impacts. Whilst there were examples of good practice, in general, FGM service provision was sub-optimal. Conclusion: Deinfibulation services need to be widely advertised. Information should highlight that the procedure can be carried out at different time points, according to preference, and in a hospital by suitable HCPs. Future services should ideally be developed with survivors, to ensure that they are clinically and culturally appropriate. Guidelines would benefit from being updated to reflect the needs of survivors and to ensure consistency in provision. Study registration number ISRCTN 14710507
Laparoscopic versus open radical hysterectomy in early-stage cervical adenocarcinoma...
Chunlin Chen
Ping Liu

Chunlin Chen

and 11 more

May 27, 2022
Objective To compare long-term survival outcomes between laparoscopic radical hysterectomy (LRH) and open radical hysterectomy (ORH) in early-stage cervical adenocarcinoma under the new FIGO 2018 staging guideline. Design Retrospective study Setting and population Early-stage cervical adenocarcinoma received LRH and ORH; 47 Chinese hospitals. Methods We matched patients with early-stage cervical adenocarcinoma in the new FIGO 2018 staging guideline with known risk factors for recurrence who underwent ORH and LRH. Main Outcome Measures 5-year overall survival and 5-year disease-free survival rates Results In total, 549 patients were enrolled in our study, including 235 patients in LRH group and 314 in ORH group. After matching some factors that may affect the prognosis, each group had 223 patients. There was no difference in DFS between LRH and ORH in risk-adjusted analysis (HR1.258, 95% CI: 0.507-3.125, P=0.621). There was no difference in OS between LRH and ORH in risk-adjusted analysis (HR1.961, 95% CI: 0.536-7.183, P=0.309). LRH resulted in significantly lower estimated blood loss (361.2 versus 165.3 ml, P < 0.001) and shorter postoperative anal exhaust time (2.8 versus 2.5 days, P = 0.003) . Intraoperative complication ( 2.7% versus 5.8%,P=0.101) and postoperative complication ( 5.8% versus 6.3%, P=0.843) rates were similar in the two groups. Conclusions LRH has comparable survival outcomes with ORH and was associated with earlier recovery in early-stage adenocarcinoma of the uterine cervix. LRH may be an appropriate option for early-stage cervical adenocarcinoma compared with ORH.
Short Course Venetoclax with standard chemotherapy is effective in Early T cell precu...
Pronamee Borah
Nitin Dayal

Pronamee Borah

and 3 more

May 27, 2022
Early T cell precursor acute lymphoblastic leukemia is a relatively new, high risk subgroup of acute lymphoblastic leukemia characterized by unique immune-phenotype and disease biology. ETP ALL cells share similarities with hematopoietic stem cells and myeloid progenitor cells. These patients have lower rates of complete remission overall survival. Venetoclax is an orally bioavailable BCL 2 inhibitor. We report the treatment outcomes of 2 patients with ETP ALL who achieved MRD negative remission with short course of venetoclax.
Heart-Type Fatty Acid Binding Protein for Early Diagnosis of Perioperative Myocardial...
Zihou Liu
Wenqian Zhai

Zihou Liu

and 9 more

May 27, 2022
Objectives: This study aimed to evaluate the early and rapid diagnostic value and the cut-off value of Heart-type fatty acid-binding protein (H-FABP) for the perioperative myocardial infarction (PMI) diagnosis after off-pump coronary artery bypass grafting (OPCABG) surgery. Method: 109 patients scheduled for first-time, elective, and isolated OPCABG surgery were erolled in this single-center, prospective and consecutive study. Serial samples for measurement of H-FABP at pre-anesthesia induction (T0, baseline), completion of last distal anastomosis (T1), on ICU admission (T2), and at 2h (T3), 4h (T4), 8h (T5), 24h (T6), and 48h (T7) were taken to analyze for H-FABP. CK-MB and cTnI were taken at T4, T5, T6, and T7. Patients were first divided into three groups according to the level of cTnI and ECG changes within the early 24 hours. Results: 44 patients served as a control group, 52 patients identified as myocardial injury group, and 13 patients defined as myocardial infarction group. The level of H-FABP released was significantly higher in the myocardial infarction group than another two groups. Using a cut-off value of 20.53 ng/ml for H-FABP, the sensitivity was 84.62%, 92.31%, and 76.92% immediately, 2 hours, and 4 hours after entering the ICU. The sensitivity of combined H-FABP and cTnI was 92.31% and 84.62% at 4 and 8 hours after entering the ICU. Conclusions: With an optimal H-FABP cut-off level of 20.53 ng/ml, H-FABP was the early and reliable biomarker for PMI diagnosis after OPCABG.
Patient perspective: coping with preoperative anxiety in patients scheduled for coron...
Adam Zemła
Krzysztof Jarmoszewicz

Adam Zemła

and 3 more

May 27, 2022
Background Despite substantial literature that addresses preoperative anxiety, identifying effective anxiety-management interventions is still recommended. Identifying factors related to preoperative anxiety is essential for intervention planning. Aim To explore patient-reported factors contributing to decreased anxiety among patients scheduled for coronary artery by-pass grafting (CABG). Methods This mixed-methods observational study involved 75 patients aged 40-83 (70.7% men; mean age 65.4±9.41). Qualitative analysis involved 25 randomly selected patients (focus group) and asked to specify factors they believed were helpful in reducing their anxiety. Visual Analogue Scale (VAS-Anxiety) was used at the moment of diagnosis and decision making (Time1, retrospectively), and on the day preceding CABG (Time2). Focus group responses were explored with the use of Interpretative Phenomenological Analysis (IPA). The Pearson’s chi -squared and the Mann-Whitney-U tests were calculated to explore differences between the study groups. Significance level α≤0.05 was used in all analyses. Results VAS-Anxiety scores reduced from 5 points at Time1 to 3 points at Time 2 (p<0.01). Fifty patients (66.7%) reported decreased anxiety between Time1 and Time2, 21 (28%) reported a stable level and 4 (5.3%) reported an increase. Employment status was the only significant factor differentiating “relief’ and “no relief” groups among socio-demographic and clinical variables. IPA yielded five main themes: conversations with health care providers, perceived inevitability of surgery, family support, other patients’ experience, and religion/faith. Conclusions Individual patient-centered interview in conjunction with emotional support are vital for managing preoperative anxiety. Providing contact with family members and paying attention to spiritual needs are also important.
← Previous 1 2 … 1829 1830 1831 1832 1833 1834 1835 1836 1837 … 2754 2755 Next →

| Powered by Authorea.com

  • Home