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1.
PLoS One ; 19(4): e0299814, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38573972

RESUMO

BACKGROUND: Snakebites are a dangerous and significant medical emergency that occurs worldwide. The World Health Organization has recommended that teaching and training in the prevention and management of snakebites be included in the curriculum of nursing schools and other educational activities. Identification of venomous snakes and first aid would be more critical in the prevention of occupational danger worldwide. This study aims to assess the knowledge in identifying venomous snakes, snakebites, and first aid methods of snakebites among nursing students in the Southern Province of Sri Lanka. METHODS: A descriptive, cross-sectional study was performed among 425 nursing students who were studying in different educational settings: undergraduates at the University of Ruhuna, and nursing students in the three schools of nursing in Galle, Matara, and Hambantota. Data were gathered by incorporating a pre-tested self-administered questionnaire after obtaining institutional permission. The total score of whole knowledge ranged from 0 to 34 for the identification of venomous snakes. Data collection was performed after obtaining ethical clearance from the Ethics Review Committee, Faculty of Allied Health Sciences, University of Ruhuna, Sri Lanka. RESULTS: Most of the students (82.6%) were in the 24-26 age category and the majority were females. Most of the sample (64.7%) had low knowledge of identifying venomous snakes. A higher percentage of students (57.4%) had a sufficient level of knowledge about first aid methods associated with snakebites and 169 participants (39.8%) had a high level of knowledge regarding first aid methods. Further, a significant impact on students' knowledge and knowledge of first aid methods was reported. CONCLUSION AND RECOMMENDATION: The overall knowledge of identifying venomous snakes among the nursing students was inadequate. However, the knowledge about the first aid methods was at a moderate level. Strategies are needed to improve knowledge in identifying venomous snakes and first aid methods of snakebites amongst nursing students in both educational settings.


Assuntos
Mordeduras de Serpentes , Estudantes de Enfermagem , Animais , Feminino , Humanos , Masculino , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/epidemiologia , Mordeduras de Serpentes/terapia , 60573 , Serpentes , Estudos Transversais , Primeiros Socorros
2.
BMC Nephrol ; 25(1): 112, 2024 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-38515042

RESUMO

INTRODUCTION: Snakebite is a public health problem leading to about 58,000 deaths every year in India. Kidney injury subsequent to snakebite envenomation is common with a reported prevalence of up to 32%. The current study aims to elucidate the spectrum of kidney histopathology in acute kidney injury (AKI) cases associated with snake bites. METHODS: We searched seven electronic database studies to identify studies describing the histopathological findings in the kidney with snakebite envenomation. Two reviewers independently conducted titles and abstract screening as well as full-text evaluation for the final inclusion decision. Data were extracted as per the standardized form. We conducted narrative synthesis. Studies done exclusively on autopsy findings, in vitro studies, and case reports were excluded. RESULTS: We retrieved 1464 studies and finally included 28 studies which met the eligibility criteria in the analysis. Most studies were single-centre and the majority were cross-sectional. Overall we included a total of 534 renal biopsies. Russell's viper bite was the most common cause related to AKI. Acute tubular necrosis was the most common finding followed by acute interstitial nephritis, acute cortical necrosis (ACN), and thrombotic microangiopathy (TMA). Vasculitis changes in vessels were rarely reported. Lesions such as ACN and TMA were associated with poor outcomes. CONCLUSION: This analysis supports the notion that renal biopsies are important to guide prognosis and increase our knowledge about post-snake bite AKI pathophysiology.


Assuntos
Injúria Renal Aguda , Mordeduras de Serpentes , Microangiopatias Trombóticas , Humanos , Mordeduras de Serpentes/complicações , Mordeduras de Serpentes/epidemiologia , Mordeduras de Serpentes/diagnóstico , Rim , Injúria Renal Aguda/diagnóstico , Microangiopatias Trombóticas/diagnóstico , Índia/epidemiologia , Necrose
3.
Emerg Med Pract ; 26(Suppl 2): 1-44, 2024 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-38350100

RESUMO

There are approximately 10,000 emergency department visits in the United States for snakebites every year, and one-third of those involve venomous species. Venomous North American indigenous snakes include species from the Crotalinae (pit vipers) and Elapidae (coral snakes) subfamilies. Treatment relies on supportive care, plus antivenom for select cases. While certain principles of management are widely accepted, controversies exist with regard to prehospital use of pressure immobilization, antivenom use, coagulation testing after copperhead envenomation, and fasciotomy. An evidence-based approach to management of North American venomous snakebites will be discussed, along with a review of the current controversies.


Assuntos
Mordeduras de Serpentes , Estados Unidos/epidemiologia , Humanos , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/terapia , Antivenenos/uso terapêutico , Serviço Hospitalar de Emergência , América do Norte/epidemiologia
4.
Toxins (Basel) ; 16(1)2024 01 19.
Artigo em Inglês | MEDLINE | ID: mdl-38276532

RESUMO

Malayan krait (Bungarus candidus) envenoming is a cause of significant morbidity and mortality in many Southeast Asian countries. If intubation and specific antivenom administration are delayed, the most significant life-threatening outcome may be the inhibition of neuromuscular transmission and subsequent respiratory failure. It is recommended that krait-envenomed victims without indications of neurotoxicity, e.g., skeletal muscle weakness or ptosis, immediately receive 10 vials of antivenom. However, the administration of excess antivenom may lead to hypersensitivity or serum sickness. Therefore, monitoring venom concentrations in patients could be used as an indicator for snake antivenom treatment. In this study, we aimed to develop a screen-printed gold electrode (SPGE) biosensor to detect B. candidus venom in experimentally envenomed rats. The gold electrodes were coated with monovalent Malayan krait IgG antivenom and used as venom detection biosensors. Electrochemical impedance spectrometry (EIS) and square wave voltammetry (SWV) measurements were performed to detect the electrical characterization between B. candidus venom and monovalent IgG antivenom in the biosensor. The EIS measurements showed increases in charge transfer resistance (Rct) following IgG immobilization and incubation with B. candidus venom solution (0.1-0.4 mg/mL); thus, the antibody was immobilized on the electrode surface and venom was successfully detected. The lowest current signal was detected by SWV measurement in rat plasma collected 30 min following B. candidus experimental envenoming, indicating the highest level of venom concentration in blood circulation (4.3 ± 0.7 µg/mL). The present study demonstrates the ability of the SPGE biosensor to detect B. candidus venom in plasma from experimentally envenomed rats. The technology obtained in this work may be developed as a detection tool for use along with the standard treatment of Malayan krait envenoming.


Assuntos
Bungarus , Elapidae , Mordeduras de Serpentes , 60573 , Humanos , Ratos , Animais , Antivenenos/farmacologia , Peçonhas , Imunoglobulina G , Mordeduras de Serpentes/diagnóstico , Venenos Elapídicos
5.
Toxicon ; 237: 107537, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38043715

RESUMO

Shield-nose and Coral snakes (Aspidelaps spp.) are medium sized venomous snakes found throughout southern Africa. Little is known about the venom of these snakes and its clinical relevance, as human bites are uncommon. Neurological signs and symptoms usually develop following bites by this genus but evaluations of the severity are inconclusive. We report on the first confirmed human fatality by the Kunene Shield-nose Snake (Aspidelaps lubricus cowlesi) in a child. Envenomation by Aspidelaps and other snakes considered lesser-venomous - especially those possessing neurotoxic venom - should be treated with caution as they may result in life-threatening envenomation without established clinical management protocols.


Assuntos
Cobras Corais , Mordeduras de Serpentes , Criança , Animais , Humanos , Mordeduras de Serpentes/diagnóstico , Antivenenos , Namíbia , Elapidae , Venenos Elapídicos/toxicidade
6.
Clin Toxicol (Phila) ; 61(11): 956-960, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38060371

RESUMO

INTRODUCTION: Stonefish envenomation results in localized severe pain and swelling and systemic features, including vomiting, arrhythmia, pulmonary oedema, and possibly death. There are limited data regarding the effectiveness of the available antivenom. The aim of this series is to characterize presentations of patients with suspected stonefish envenomation and investigate treatment, including antivenom. METHODS: This is a retrospective observational series of suspected stonefish envenomation as reported to the Queensland Poisons Information Centre or Princess Alexandra Hospital Clinical Toxicology Unit from July 2015 to January 2023. Patients were identified through the databases held by both the Centre and Unit, and data on clinical features and investigations were collected from the patient's electronic medical record. RESULTS: There were 87 suspected stonefish envenomations from July 2015 to January 2023. The median age was 26 (range: 5-69) years, and 69 (79 per cent) patients were male. Pain was reported in 85 (98 per cent) with a median peak pain score of 10 (range 4-12; three rated their pain greater than 10/10). A clear wound was documented in 64 (74 per cent), with local swelling in 63 (72 per cent). A foreign body was retained in eight (9 per cent) presentations. Systemic symptoms were rare, with vomiting in four (5 per cent) and dizziness in two (2 per cent) presentations. There were no instances of hypotension, arrhythmia, or pulmonary oedema. Hot water was administered in 72 (83 per cent) presentations. Oral analgesia was given in 55 (63 per cent). Parenteral analgesia was given in 53 (61 per cent), most commonly opioids. Local anaesthetic block was performed in 19 presentations (22 per cent), with effectiveness documented in 16/19 (84 per cent). Five patients received antivenom for intractable pain, and all received subsequent parenteral analgesia or local anaesthetic block. CONCLUSIONS: Stonefish envenomation is characterized by severe pain. Systemic symptoms were rare and not severe in this series. Local anaesthetic block appeared to be the most effective intervention for severe pain when performed. Antivenom appeared to be ineffective in managing pain.


Assuntos
Edema Pulmonar , Mordeduras de Serpentes , Humanos , Masculino , Adulto , Feminino , Antivenenos/uso terapêutico , Edema Pulmonar/tratamento farmacológico , Estudos Retrospectivos , Anestésicos Locais , Queensland/epidemiologia , Dor/tratamento farmacológico , Dor/etiologia , Edema/tratamento farmacológico , Arritmias Cardíacas/tratamento farmacológico , Vômito/tratamento farmacológico , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/tratamento farmacológico
7.
Med Trop Sante Int ; 3(3)2023 09 30.
Artigo em Francês | MEDLINE | ID: mdl-38094484

RESUMO

Background: Snakebite clinical trials have often used heterogeneous outcome measures and there is an urgent need for standardisation. Method: A globally representative group of key stakeholders came together to reach consensus on a globally relevant set of core outcome measurements. Outcome domains and outcome measurement instruments were identified through searching the literature and a systematic review of snakebite clinical trials. Outcome domains were shortlisted by use of a questionnaire and consensus was reached among stakeholders and the patient group through facilitated discussions and voting. Results: Five universal core outcome measures should be included in all future snakebite clinical trials: mortality, WHO disability assessment scale, patient-specific functional scale, acute allergic reaction by Brown criteria, and serum sickness by formal criteria. Additional syndrome-specific core outcome measures should be used depending on the biting species. Conclusion: This core outcome measurement set provides global standardisation, supports the priorities of patients and clinicians, enables meta-analysis, and is appropriate for use in low-income and middle-income settings.


Assuntos
Ensaios Clínicos como Assunto , Mordeduras de Serpentes , Humanos , Consenso , Avaliação da Deficiência , Avaliação de Resultados em Cuidados de Saúde , Mordeduras de Serpentes/diagnóstico , Inquéritos e Questionários
8.
Toxins (Basel) ; 15(12)2023 11 28.
Artigo em Inglês | MEDLINE | ID: mdl-38133179

RESUMO

Snakebite-related fatalities disproportionately affect populations in impoverished socio-economic regions, marked by limited access to adequate healthcare and constrained antivenom availability. Early medical intervention is pivotal in mitigating mortality and morbidity associated with snakebite envenoming (SBE). While clinical assessment remains fundamental in treating SBE, this review aims to spotlight objective parameters that could also affect outcomes. Selected studies that identify factors associated with poor outcomes are predominantly region-specific, single-site, and observational, yet collectively reveal similar findings. They consistently report factors such as treatment delays, susceptibility in vulnerable groups such as children and pregnant women, as well as various biochemical and haematological abnormalities. Acute kidney injury (AKI), low platelets, leucocytosis, abnormal coagulation, and elevated creatine kinase (CK) all show an association with poor outcomes. Furthermore, recognising rare and unusual SBE presentations such as adrenal insufficiency, severe hypertension, intracranial haemorrhage, acute angle closure glaucoma, and bowel ischaemia also has a bearing on outcomes. Despite the integration of these parameters into clinical decision tools and guidelines, the validation of this evidence is limited. This review underscores the imperative for high-quality, multi-centre studies aligned with consensus-driven Core Outcome Sets (COS) and Patient-Reported Outcome Measures (PROMS) to validate and strengthen the current evidence.


Assuntos
Mordeduras de Serpentes , Gravidez , Criança , Animais , Humanos , Feminino , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/tratamento farmacológico , Antivenenos/uso terapêutico , Venenos de Serpentes/uso terapêutico , Serpentes , Fatores de Risco
9.
Int J Public Health ; 68: 1606601, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38146482

RESUMO

Objectives: This study aimed to determine the current status of the knowledge of diagnosis and treatment of snakebites among medical staff in China and its influencing factors. Methods: A cross-sectional survey of 12,581 medical staff was conducted in 12 provinces in China between June 2022 and February 2023. We analyzed the results using descriptive statistics, T-tests or analysis of variance, and a generalized linear model. Results: The average score of snakebite diagnosis and treatment knowledge among medical staff in China was 3.15 ± 2.15 out of a total score of 12. Through a generalized linear regression model, we found that gender, occupation, region, hospital level, work department, work tenure, training received in the diagnosis and treatment of snakebite, experience in snakebite diagnosis and treatment, availability of antivenom in the unit, and self-evaluation of snakebite treatment ability all affected the medical staff's scores of snakebite diagnosis and treatment knowledge. Conclusion: The knowledge level of snakebite diagnosis and treatment among Chinese medical staff is generally low, so it is imperative to conduct standardized snakebite diagnosis and treatment training for medical staff.


Assuntos
Competência Clínica , Mordeduras de Serpentes , Humanos , Antivenenos , China , Estudos Transversais , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/epidemiologia , Mordeduras de Serpentes/terapia
10.
Toxins (Basel) ; 15(11)2023 11 10.
Artigo em Inglês | MEDLINE | ID: mdl-37999511

RESUMO

Snakebite envenoming is one of the most significantly neglected tropical diseases in the world. The lack of diagnosis/prognosis methods for snakebite is one of our motivations to develop innovative technological solutions for Brazilian health. The objective of this work was to evaluate the protein and metallic ion composition of Crotalus durissus terrificus, Bothrops jararaca, B. alternatus, B. jararacussu, B. moojeni, B. pauloensis, and Lachesis muta muta snake venoms. Brazilian snake venoms were subjected to the shotgun proteomic approach using mass spectrometry, and metal ion analysis was performed by atomic spectrometry. Shotgun proteomics has shown three abundant toxin classes (PLA2, serine proteases, and metalloproteinases) in all snake venoms, and metallic ions analysis has evidenced that the Cu2+ ion is present exclusively in the L. m. muta venom; Ca2+ and Mg2+ ions have shown a statistical difference between the species of Bothrops and Crotalus genus, whereas the Zn2+ ion presented a statistical difference among all species studied in this work. In addition, Mg2+ ions have shown 42 times more in the C. d. terrificus venom when compared to the average concentration in the other genera. Though metal ions are a minor fraction of snake venoms, several venom toxins depend on them. We believe that these non-protein fractions are capable of assisting in the development of unprecedented diagnostic devices for Brazilian snakebites.


Assuntos
Bothrops , Venenos de Crotalídeos , Mordeduras de Serpentes , Animais , Mordeduras de Serpentes/diagnóstico , Brasil , Proteômica , Venenos de Serpentes , Íons , Venenos de Crotalídeos/química
11.
S Afr Med J ; 113(7): 16-21, 2023 06 21.
Artigo em Inglês | MEDLINE | ID: mdl-37882036

RESUMO

This article explores the management of snakebite to vulnerable patient groups, namely children and pregnant women as well as providing detail on the current best practice when caring for venom ophthalmia and surgical wounds resulting from snakebite. Finally, the optimal free-to-use medical record for accurate documentation of snakebite incidents is provided for use by South African practitioners.


Assuntos
Mordeduras de Serpentes , Gravidez , Criança , Humanos , Feminino , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/terapia , África do Sul , Antivenenos/uso terapêutico
12.
Biomarkers ; 28(7): 652-662, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37902066

RESUMO

BACKGROUND: This study aimed to assess the predictive value of NLR, PLR, and MPV time series for diagnosis and prognosis of hemotoxic snakebite envenomation. METHODS: This is a prospective study among snakebite patients admitted to the Poison Control Center of Ain Shams University Hospitals and Assiut University Hospitals from the beginning of July 2019 to the end of October 2021. Patients were classified according to their clinical severity into three groups: mild, moderate, and severe. RESULTS: The maximum incidence of snakebite was found in males (95%) from rural areas (80%); at lower limbs (70%); at night (51%); and during the autumn season (43.3%). The admission NLR and PLR can predict hemotoxic snakebite envenomation with an AUC of 0.940 and 0.569. The combination of NLR with PLR can develop a more predominant prediction of snakebite envenomation with an area under the curve (AUC) of 0.979. Furthermore, higher admission NLR and PLR levels are associated with prolonged hospital stays. CONCLUSION: While NLR and PLR levels may be helpful in the diagnosis of snakebite, MPV plays no part in the prognosis of snakebite patients. Serial NLR, PLR initially, at 24 hours, and predischarge can be used to evaluate the early treatment response.


Assuntos
Neutrófilos , Mordeduras de Serpentes , Masculino , Humanos , Volume Plaquetário Médio , Mordeduras de Serpentes/diagnóstico , Contagem de Leucócitos , Fatores de Tempo , Estudos Prospectivos , Contagem de Plaquetas , Plaquetas , Prognóstico , Linfócitos , Estudos Retrospectivos
13.
Toxins (Basel) ; 15(10)2023 10 12.
Artigo em Inglês | MEDLINE | ID: mdl-37888640

RESUMO

Daboia (Vipera) palaestinae (Dp), accounts for most envenomations in humans and dogs in Israel. In humans envenomed by Dp, serum cholesterol concentration (sChol) is inversely correlated with envenomation severity. This study examined the utility of sChol upon admission in dogs envenomed by Dp as an envenomation severity and outcome marker. Data upon admission, including sChol, were retrospectively collected from the medical records of dogs with proven Dp envenomation. The study included 415 dogs. The mortality rate was 11%. The heart rate upon admission was higher in non-survivors than in survivors. Signs of bleeding or hematoma and circulatory shock signs were more frequent among non-survivors compared to survivors. sChol, the platelet count, and serum albumin concentration (sAlb) were lower, while serum creatinine concentration was higher among non-survivors. sChol and sAlb were moderately, positively, and significantly correlated. sChol was significantly, negatively, albeit weakly, correlated with the length of hospitalization and the heart rate. sChol was lower in dogs admitted >12 h post-envenomation than in those admitted later. In dogs, sChol upon admission is a potential marker of severity and outcome of Dp envenomation. The platelet count, sAlb, and sCreat might also be potential markers.


Assuntos
Doenças do Cão , Mordeduras de Serpentes , Viperidae , Humanos , Cães , Animais , Estudos Retrospectivos , Venenos de Víboras/toxicidade , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/veterinária , Colesterol , Creatinina , Antivenenos
14.
Toxins (Basel) ; 15(9)2023 08 26.
Artigo em Inglês | MEDLINE | ID: mdl-37755950

RESUMO

Bothrops snakebite envenomation (SBE) is consider an important health problem in Brazil, where Bothrops atrox is mainly responsible in the Brazilian Amazon. Local effects represent a relevant clinical issue, in which inflammatory signs and symptoms in the bite site represent a potential risk for short and long-term disabilities. Among local complications, secondary infections (SIs) are a common clinical finding during Bothrops atrox SBE and are described by the appearance of signs such as abscess, cellulitis or necrotizing fasciitis in the affected site. However, the influence of SI in the local events is still poorly understood. Therefore, the present study describes for the first time the impact of SBE wound infection on local manifestations and inflammatory response from patients of Bothrops atrox SBE in the Brazilian Amazon. This was an observational study carried out at the Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus (Brazil), involving victims of Bothrops SBE. Clinical and laboratorial data were collected along with blood samples for the quantification of circulating cytokines and chemokines before antivenom administrations (T0) and 24 h (T1), 48 h (T2), 72 h (T3) and 7 days after (T4). From the 94 patients included in this study, 42 presented SI (44.7%) and 52 were without SI (NSI, 55.3%). Patients classified as moderate envenoming presented an increased risk of developing SI (OR = 2.69; CI 95% = 1.08-6.66, p = 0.033), while patients with bites in hands showed a lower risk (OR = 0.20; CI 95% = 0.04-0.96, p = 0.045). During follow-up, SI patients presented a worsening of local temperature along with a sustained profile of edema and pain, while NSI patients showed a tendency to restore and were highlighted in patients where SI was diagnosed at T2. As for laboratorial parameters, leukocytes, erythrocyte sedimentation ratio, fibrinogen and C-reactive protein were found increased in patients with SI and more frequently in patients diagnosed with SI at T3. Higher levels of circulating IL-2, IL-10, IL-6, TNF, INF-γ and CXCL-10 were observed in SI patients along with marked correlations between these mediators and IL-4 and IL-17, showing a plurality in the profile with a mix of Th1/Th2/Th17 response. The present study reports for the first time the synergistic effects of local infection and envenoming on the inflammatory response represented by local manifestations, which reflected on laboratorial parameters and inflammatory mediators and thus help improve the clinical management of SI associated to Bothrops SBE.


Assuntos
Bothrops , Coinfecção , Mordeduras de Serpentes , Humanos , Animais , Mordeduras de Serpentes/complicações , Mordeduras de Serpentes/diagnóstico , Brasil/epidemiologia , Antivenenos/uso terapêutico
15.
S Afr Med J ; 113(6): 12-18, 2023 06 05.
Artigo em Inglês | MEDLINE | ID: mdl-37278261

RESUMO

Snake bite management is largely driven by expert opinion and consensus, however there are a few large retrospective studies and RCT's that have improved the quality of medical guidance currently available. South African snakes are different in the venomous potential and it behooves the hospital provider and the average medical practitioner to know the current best practice concepts concerning assessment, treatment and antivenom use. The recent SASS meeting in July 2022 provided an update and national consensus from which this Hospital Care document is derived.


Assuntos
Mordeduras de Serpentes , Animais , Humanos , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/terapia , África do Sul , Estudos Retrospectivos , Antivenenos/uso terapêutico , Serpentes
16.
PLoS Negl Trop Dis ; 17(6): e0011442, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37363905

RESUMO

INTRODUCTION: Envenoming by Echis spp. (carpet or saw-scaled vipers) causes haemorrhage and coagulopathy and represents a significant proportion of snakebites in the savannah regions of West Africa. Early diagnosis of envenoming is crucial in the management of these patients and there is limited evidence on the utility of the 20-minute whole blood clotting test (20WBCT) in diagnosing venom-induced consumptive coagulopathy (VICC) following envenoming by Echis ocellatus. METHODS: A prospective observational cohort study was conducted at the Kaltungo General Hospital in North-eastern Nigeria from September 2019 to September 2021. Standardised 20WBCTs were conducted by trained hospital staff and citrated plasma samples were collected at numerous timepoints. Prothrombin time (PT) and international normalised ratio (INR) were determined using a semi-automated analyser and INR values were calculated using international sensitivity indices (ISI). The sensitivity, specificity, positive predictive values (PPV), negative predictive values (NPV), and likelihood ratios of the 20WBCT compared to an INR ≥ 1.4 were calculated, alongside 95% confidence intervals. RESULTS: We enrolled 121 patients into our study, with a median age of 26 (18.0-35.0) years and a male predominance (75.2%). The 20WBCT was positive (abnormal) in 101 out of 121 patients at timepoint 0h, of which 95 had an INR ≥ 1.4, giving a sensitivity of 87.2% (95%CI 79.4-92.8). Among patients with a negative 20WBCT (normal), six had an INR < 1.4 giving a specificity of 50% (95%CI 21.1-78.9). The positive and negative likelihood ratios were 1.7 (95%CI 1.6-1.9) and 0.3 (95%CI 0.1-0.4) respectively. CONCLUSION: The 20WBCT is a simple, cheap, and easily accessible bedside test with a high sensitivity for the detection of patients with venom induced consumptive coagulopathy (VICC) following envenoming by E. ocellatus, although false positives do occur. Repeated 20WBCTs can identify patients with new, persistent, and rebound coagulopathy.


Assuntos
Transtornos da Coagulação Sanguínea , Mordeduras de Serpentes , Viperidae , Animais , Humanos , Masculino , Adulto , Feminino , Estudos Prospectivos , Antivenenos , Venenos de Víboras , Transtornos da Coagulação Sanguínea/etiologia , Mordeduras de Serpentes/complicações , Mordeduras de Serpentes/diagnóstico , Coagulação Sanguínea
17.
Anal Chim Acta ; 1272: 341306, 2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37355315

RESUMO

BACKGROUND: Brazil is home to a multitude of venomous snakes; perhaps the most medically relevant of which belong to the Bothrops genus. Bothrops spp. are responsible for roughly 70% of all snakebites in Brazil, and envenomings caused by their bites can be treated with three types of antivenom: bothropic antivenom, bothro-lachetic antivenom, and bothro-crotalic antivenom. The choice to administer antivenom depends on the severity of the envenoming, while the choice of antivenom depends on availability and on how certain the treating physician is that the patient was bitten by a bothropic snake. The diagnosis of a bothropic envenoming can be made based on expert identification of the dead snake or a photo thereof or based on a syndromic approach wherein the clinician examines the patient for characteristic manifestations of envenoming. This approach can be very effective but requires staff that has been trained in clinical snakebite management, which, unfortunately, far from all relevant staff has. RESULTS: In this article, we describe a prototype of the first lateral flow assay (LFA) capable of detecting venoms from Brazilian Bothrops spp. The monoclonal antibodies for the assay were generated using hybridoma technology and screened in sandwich enzyme-linked immunosorbent assays (ELISAs) to identify Bothrops spp.-specific antibody sandwich pairs. The prototype LFA is able to detect venom from several Bothrops spp. The LFA has a limit of detection (LoD) of 9.5 ng/mL in urine, when read with a commercial reader, and a visual LoD of approximately 25 ng/mL. SIGNIFICANCE: The work presented here serves as a proof of concept for a genus-specific venom detection kit that could support physicians in diagnosing Bothrops envenomings. Although further optimisation and testing is needed before the LFA can find clinical use, such a device could aid in decentralising antivenoms in the Brazilian Amazon and help ensure optimal snakebite management for even more victims of this highly neglected disease.


Assuntos
Bothrops , Venenos de Crotalídeos , Mordeduras de Serpentes , Animais , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/tratamento farmacológico , Antivenenos/uso terapêutico , Venenos de Crotalídeos/uso terapêutico , Anticorpos Monoclonais/uso terapêutico
18.
J Assoc Physicians India ; 71(5): 11-12, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37355819

RESUMO

OBJECTIVE: Snake bite is an emergency in tropical and subtropical countries. It is a neglected disease and is most commonly seen in rural setups, where people are ignorant about the venomous snake bites. It results in increased mortality and morbidity because precious time is wasted, either in consulting traditional healers or waiting for the development of signs and symptoms of envenomation. Then only the patient is shifted to a health center. Here we studied the clinical profile, management, and outcome of snake bite patients. MATERIALS AND METHODS: This study was done by retrieving the records of patients with snake bites admitted to the Department of Medicine, Indira Gandhi Medical College & Hospital, Shimla, from 1st January 2017 through December 2019. The recorded data was entered in a precoded performa, and analysis was done with respect to various variables. RESULT: We evaluated the records of 190 patients. The incidence of the bite was higher among females, 62.1% (n = 118). The commonest age group involved was 21-50 years, 70.1% (n = 34). In 55.8% (n = 106), the site of the bite was the upper limb. The daytime bite was present in 54.7% (n = 106). The maximum incidence of snake bites was found during the rainy season, 81.5% (n = 155). 28.4% (n = 54) of patients presented within 6 hours of the bite. Coagulopathy [whole blood clotting test (WBCT) of >20 minutes] and neurotoxicity were seen in 77.9 and 7.9% of patients, respectively. Anti-snake venom (ASV) was given to 87.8% (n = 167) of patients. In 80% (n = 152) of the cases, hospital stay was up to 3 days. Mortality was seen in only two (1.05%) cases. CONCLUSION: There is a need to create awareness among the community, particularly in rural areas, about snake bite envenomation and early transportation of victims to the nearest health center. Training of health professionals is also needed to manage cases of snake bites efficiently and judiciously, thereby reducing morbidity and morbidity.


Assuntos
Mordeduras de Serpentes , Adulto , Feminino , Humanos , Pessoa de Meia-Idade , Adulto Jovem , Antivenenos/uso terapêutico , Mordeduras de Serpentes/epidemiologia , Mordeduras de Serpentes/terapia , Mordeduras de Serpentes/diagnóstico , Venenos de Serpentes , Centros de Atenção Terciária , Atenção Terciária à Saúde
19.
S Afr Med J ; 113(5): 10-18, 2023 05 05.
Artigo em Inglês | MEDLINE | ID: mdl-37170609

RESUMO

Snakebites occur in the community, not in the Emergency Unit. As such it is important to understand the first-aid concepts and pre-hospital emergency care aspects of this neglected disease. This article will highlight the concepts for emergency care within the context of the current pre-hospital arena and in light of the recent South African Snakebite Symposium consensus meeting held in July 2022, where wilderness rescue, emergency medical services and other medical participants agreed through evidence review and consensus debate on the current best approaches to care of the snakebite victim outside the hospital environment.


Assuntos
Mordeduras de Serpentes , Humanos , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/terapia , África do Sul , Serviço Hospitalar de Emergência , Hospitais , Antivenenos/uso terapêutico
20.
Am Surg ; 89(9): 3900-3901, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37165662

RESUMO

Envenomation syndromes following snakebites can include tissue reaction, coagulopathy, nephrotoxicity, and neurotoxicity. Cardiotoxicity is rare but usually presents with dysrhythmias. Myocardial infarction after envenomation has rarely been reported. We discuss a case of snake bite simulating ST-elevation myocardial infarction (STEMI). Our patient is a 49-year-old male who sustained a snake bite in his left hand. Patient had hemodynamic collapse requiring increasing pressor support; EKG and troponin results confirmed STEMI. Cardiac catheterization did not demonstrate any thrombosis, rather severe cardiomyopathy with left ventricular ejection fraction 20-25%. Even though our patient did not require any coronary intervention, an angiogram was warranted given the clinical presentation. Our case demonstrates severe cardiotoxicity following snake bite. Further research is warranted to study the mechanism behind such phenomena.


Assuntos
Infarto do Miocárdio com Supradesnível do Segmento ST , Mordeduras de Serpentes , Masculino , Humanos , Pessoa de Meia-Idade , Animais , Mordeduras de Serpentes/complicações , Mordeduras de Serpentes/diagnóstico , Mordeduras de Serpentes/terapia , Infarto do Miocárdio com Supradesnível do Segmento ST/diagnóstico , Infarto do Miocárdio com Supradesnível do Segmento ST/etiologia , Volume Sistólico , Cardiotoxicidade , Função Ventricular Esquerda , Serpentes
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