Snakebite Patients Research Articles

Frequency, Clinical Characteristics, and Management of Snakebite Patients Admitted at the Envenomation Treatment Center of the Applied Biology Research Institute of Guinea.

The aim of this study was to describe the frequency, clinical signs, management, and outcomes of snakebite patients admitted to the envenomation treatment center of the Institut de Recherche en Biologie Appliquée de Guinée (IRBAG). This was a retrospective review combining aggregated annual statistics (2011-2015) and routine data (from January to October 2021) from the IRBAG treatment center. There were 1345 (57.2%) snakebite victims out of a total of 2352 consultations at the center during the study period. Males (67.7%), persons aged ≥45 years (29%) and ≤14 years (27.7%), farmers/housewives (44.5%), workers (23.9%), and those residing in the Kindia Prefecture (53.5%) were the most commonly affected. The majority of victims (84.5%) were admitted three hours after snakebite, with bites mainly occurring in rural areas (86.5%) and during the rainy season (83.2%). Pain (100%), edema (76.8%), and bleeding (65.2%) were the most common clinical presentations. Almost all victims received antivenom serum (98%), antibiotics (87.7%), and analgesics or anti-inflammatory drugs (88.4%). Six out of the one hundred and fifty-five patients died. Snakebites are a frequent public health problem in rural Guinea. The majority of victims seek medical attention too late. There is an urgent need to include snakebite in the country's list of priority NTDs in order to promote access to antivenom serum.

Characterization of patients with a snakebite presenting to healthcare facilities and reported to poison and drug information centers—Arizona, 2017–2021

Introduction Envenomation after a North American rattlesnake (Crotalus spp. and Sistrusus spp.) bite is associated with substantial morbidity. Arizona reports the highest number of rattlesnake envenomations annually in the United States. We evaluated the performance of poison and drug information centers for snakebite surveillance, compared with the hospital and emergency department discharge database. We used both datasets to improve the characterization of epidemiology, healthcare costs, and clinical effects of snakebite envenomations in Arizona. Methods We identified patients with a snakebite during 2017–2021 using Arizona hospital and emergency department discharge data and snakebite consults with two regional Arizona poison centers. Patients were matched using name and birthdate. The performance of poison center data for snakebite surveillance was evaluated using the percentage of snakebite patients in hospital and emergency department discharge data that consulted with poison centers. Patient demographics, healthcare characteristics, clinical effects, and context of snakebite events were described using both datasets. Results In total, 1,288 patients with a snakebite were identified using the Arizona hospital and emergency department discharge data, which resulted in 953 (74%) consultations with poison centers. The median age of patients was 48 years (IQR 28-62 years), and they were predominantly male (66%), White (90%), and non-Hispanic (84%). The median billed charges were US$ 84,880 (IQR US$ 13,286–US$ 168,043); the median duration of a healthcare stay was 34 h (IQR 13–48 h), and 29% of patients were transferred between healthcare facilities. Among 953 consulted poison center calls for a snakebite, a median of 14 vials of antivenom was administered per patient; 375 (60%) bites occurred near the home, and 345 (43%) patients were bitten on a lower extremity. One death was identified. Discussion Snakebites in Arizona can cause severe morbidity and require extensive healthcare resources for treatment. Poison centers are valuable for monitoring venomous snakebites in Arizona. Conclusions Using hospital and emergency department discharge data with poison center records can improve public health surveillance data regarding snakebite epidemiology and human-snake interaction information and be used to tailor interventions to increase awareness of snake encounters and prevent snakebites.

Limb circumference measurements contributing to the diagnosis of snake venom-induced compartment syndrome

BackgroundThe present study aimed to investigate the relationship between swollen limb circumference and compartment pressure after a snakebite and to evaluate the diagnostic value of the circumference difference between the healthy and affected sides and the circumference growth rate for snake venom-induced compartment syndrome (CS). MethodThe study was based on a prospective cohort study of snakebite patients at the emergency department of West China Hospital from May 2021 to October 2022. The snakebite patients were divided into the CS and non-compartment syndrome (NCS) groups. The diagnostic value of the circumference of the swollen limb for the CS after snakebite was evaluated using a receiver-operating characteristic curve analysis, and the cut-off value of the circumference of the swollen limb for CS after snakebite was calculated with sensitivity and specificity. ResultThe present study enrolled 115 patients with severely swollen limbs after snakebite. The mean age was 59.1 ± 13.6 years, with 58 (50.4 %) female cases and 57 (49.6 %) male cases. There were 33 (28.7 %) cases where the upper limbs were injured and 82 (71.3 %) cases where the lower limbs were injured. These patients were divided into CS (n = 19) and NCS (n = 96) groups. The area under the curve (AUC) for the 15 cm circumference difference and circumferential growth rate of the upper edge of the patella was 0.683 (95 % CI 0.508 to 0.858, P = 0.037), and 0.685 (95 % CI 0.512 to 0.858, P = 0.035). The optimal cut-off values for the 15 cm circumference difference and circumferential growth rate of the upper edge of the patella to distinguish CS and NCS were 2.8 cm (sensitivity = 76.9 %, specificity = 66.7 %) and 7 % (sensitivity = 76.9 %, specificity = 66.7 %), respectively. ConclusionLimb circumference measurement is a non-invasive, convenient, effective, and repeatable bedside test that can assist clinicians in the early detection of suspected snake venom-induced CS in patients exhibiting limb swelling after snake bites.

Utility of Three Serum Biomarkers for Early Detection of Systemic Envenoming Following Viper Bites in Sri Lanka

BackgroundEarly detection of systemic envenoming is critical for early antivenom therapy to minimise morbidity and mortality from snakebite. We assessed the diagnostic utility of three serum biomarkers in the early detection of systemic envenoming in viper bites in rural Sri Lanka. MethodsAll confirmed snakebite patients admitted to Teaching Hospital Anuradhapura from July 2020 to June 2021 were included. On admission, blood was collected for venom concentrations, prothrombin time (PT)/international normalised ratio (INR), fibrinogen, serum creatinine (sCr), and three serum biomarkers - secretory phospholipase A2 (sPLA2), neutrophil gelatinase-associated lipocalin (sNGAL) and clusterin (sClu). Systemic envenoming was defined by the presence of venom-induced consumption coagulopathy, neurotoxicity, acute kidney injury or the presence of non-specific clinical effects. ResultsA total of 237 confirmed snakebite patients (Russell’s viper,72; Hump-nosed viper,80; non-venomous snakes,31; and unidentified bites,54) with sufficient pre-antivenom serum samples were recruited [median age: 42y (interquartile range: 29-53y); males: 173 (73%)]. Systemic envenoming occurred in 68 (94%) Russell’s viper bites, 48 (60%) hump-nosed viper bites and 45 (83%) unidentified bites. The median sPLA2 activity was 72nmol/ml/min (IQR: 30–164) for Russell’s viper envenoming, 12nmol/ml/min (IQR:9–16) for hump-nosed viper envenoming and 11nmol/ml/min (IQR:9-14) for non-venomous bites. There was no difference in sNGAL and sCLu between the three groups. The median sPLA2 activity of patients with systemic envenoming was 16nmol/min/mL (IQR:11–59nmol/min/mL) compared to 11 nmol/min/mL(IQR:9–14nmol/min/mL) in patients without systemic envenoming; difference between medians of 5nmol/min/mL (95% CI:4–12nmol/min/mL). The AUC-ROC of admission sPLA2 was the best predictor of systemic envenoming in all snakebites (AUC-ROC 0.72, 95% CI: 0.66 to 0.79), whereas sNGAL and sClu were poor predictors. sPLA2 was a better predictor of systemic envenoming in Russell’s viper bites (AUC-ROC 0.90, 95% CI:0.76-1.00) and in those presenting within 2h of bite. A sPLA2 activity >23.5nmol/min/ml had a sensitivity of 97% (95% CI:91-99.5%), but a low specificity of 41% (95% CI:34%-49%) in predicting systemic envenoming. A sPLA2 concentration of >46 nmol/min/ml on admission had a sensitivity of 100% (95% CI:51%-100%) and a specificity of 67% (95% CI:55%-77%) in predicting systemic envenoming in Russell’s viper bites. ConclusionsPLA2 is an early predictor of systemic envenoming following snakebite, particularly in Russell’s viper bites and in those who present early.

Some concerns on 'clinico-epidemiological profile and outcome of snakebite patients presented to a teaching institute - A descriptive retrospective review'.

Some concerns on 'clinico-epidemiological profile and outcome of snakebite patients presented to a teaching institute - A descriptive retrospective review'.

Health issues and related health-seeking behaviours of snakebite patients after hospital discharge: A cohort study from rural Sri Lanka

We aimed to assess the unresolved health issues experienced by a cohort of snakebite survivors and their health-seeking behaviours during the first three months after the snakebite. Patients from the Anuradhapura snakebite cohort admitted to the Teaching Hospital Anuradhapura, Sri Lanka, from July 2021 to June 2022 were recruited. Patients were interviewed over the telephone three weeks and three months post-bite to collect data on unresolved health problems post-discharge, patient's adherence to the review plan, newly experienced health issues, health-seeking behaviours and the effect on daily routine. Only snakebite survivors who could be contacted at both three weeks and three months were included. Of 710 eligible patients, 384 (54%) were contactable at both reviews. On discharge from the hospital, 248/384 (65%) had unresolved effects of the snakebite, including 224/384 (58%) who had local effects. The unresolved health problems were reported by patients bitten by H. hypnale (54%), D. russelii (23%), and unidentified snakes (19%). At three weeks and three months, 98/384 (26%) and 52/384 (14%) still had unresolved local effects of envenoming, respectively. Of 144/384 (38%) who were advised to attend review visits post-discharge, mostly to assess renal function, 118 (82%) complied. 112/384 (29%) patients reported self-motivated treatment seeking for unresolved effects of snakebite over the three months. Of them, 87 (78%) visited Sri Lankan indigenous medical practitioners. Patients missed a median of two working days (IQR: 2–4 days) post-discharge. 26 (6.7%) were unable to return to work at 3 weeks, and five patients at 3 months. In rural Sri Lanka, a significant number of viper bite patients leave hospital with mild persistent local effects, which commonly leads to them seeking further treatment. Despite that, almost all snakebite survivors had returned to work at three months post-bite.

The changes and the potential clinical applications of cytokines in Taiwan’s major venomous snakebites patients

BackgroundTaiwan habu (Protobothrops mucrosquamatus), green bamboo viper (Viridovipera stejnegeri), and Taiwan cobra (Naja atra) are the most venomous snakebites in Taiwan. Patients commonly present with limb swelling but misdiagnosis rates are high, and currently available diagnostic tools are limited. This study explores the immune responses in snakebite patients to aid in differential diagnosis. MethodsThis prospective observational study investigated the changes in cytokines in snakebite patients and their potential for diagnosis. ResultsElevated pro-inflammatory cytokines IL-6 and TNF-α were observed in all snakebite patients compared to the healthy control group. While no significant disparities were observed in humoral immune response cytokines, there were significant differences in IFN-γ levels, with significantly higher IL-10 levels in patients bitten by cobras. Patients with TNF-α levels exceeding 3.02 pg/mL were more likely to have been bitten by a cobra. ConclusionThis study sheds light on the immune responses triggered by various venomous snakebites, emphasizing the potential of cytokine patterns for snakebite-type differentiation. Larger studies are needed to validate these findings for clinical use, ultimately improving snakebite diagnosis and treatment.

Vulnerability factors of snake bite patients in China

ObjectiveTo analyze the vulnerability factors of snakebite patients in China.MethodsMulti-stage random sampling was used as the main sampling method and snowball sampling as the auxiliary sampling method. The knowledge, attitude and behavior of snakebite among Chinese residents were investigated. Non-parametric test was used to compare the percentage differences in residents’ knowledge, attitude and behavior of snakebite, and generalized linear regression analysis was used to analyze the influencing factors, and the vulnerability factors of snakebite patients were comprehensively analyzed.ResultsA total of 6338 subjects were included in this study, of which 68.4% were males, and 58.6% were farmers, workers and service personnel. The median total score of knowledge, attitude, and behavior was 26 (22,36). The patients who were improperly treated after injury were ligation proximal to the affected area (23.43%), squeezing (21.82%), and oral and suction wounds (8.74%). Did not go to hospital due to poverty (1351 cases) and did not receive antivenom (2068 cases). There were 21.32% and 32.63%, respectively. Among 4270 patients injected with antivenom 30.7% were vaccinated within 2 h. Among the patients who went to the hospital for treatment (4987), 75.0% arrived at the hospital within 6 h; Among the 4,761 patients who made emergency calls, 37.4% were treated within 0.5 h.ConclusionsSnakebite patients in China have weak knowledge about snakebite, low awareness of medical treatment, lack of correct prevention and emergency treatment measures, dependence on folk remedies, poor housing and so on. In addition, there are low availability of antivenoms and unreasonable distribution of medical resources in some areas of China. Multisectoral and multidisciplinary cooperation should be developed to prevent and control snakebites in order to reduce the burden caused by snakebites.

Neurotoxic snakebite envenomation treated with Philippine cobra antivenom in the eastern Visayas: a descriptive study between 2016 and 2020.

There is a significant shortage of observational studies on neurotoxic snakebite envenomation in the Philippines. This lack of data, especially concerning treatment using Purified Cobra Antivenom (PCAV), has prompted the initiation of this foundational study. The target population included snakebite patients admitted to the Eastern Visayas Medical Center and treated with PCAV between 2016 and 2020. A retrospective chart review was conducted for data collection. The investigation analyzed the hospital stay and patient features of individuals who were administered either lower or higher doses of PCAV. Eighty-two patients were identified during the study. Of these, 27 (33%) were under 20years of age and 50 (61%) were male. Most patients, totalling 75 (92%) were hailed from rural areas. Of the 82 patients, 59 (72%) received one or two ampoules of PCAV during the course. However, patients who received more than two ampoules had a longer median hospital stay than those who received less than three ampoules [96h (interquartile range, IQR 66-122) vs. 125h (IQR 96-218), P=0.038]. The study reported five in-hospital mortalities (6.1%). The individuals who needed a high dosage of PCAV tended to have more extended hospital stays, yet over 70% of the patient population required a lower dosage. To gain a clearer understanding of the burden of neurotoxic snakebites and determine the optimal PCAV dosage based on disease severity in the area, a more comprehensive, prospective study is recommended.

Socio-Demographic Profile of Patients of Snakebite in Eastern Odisha

Socio-Demographic Profile of Patients of Snakebite in Eastern Odisha

Evaluation of optimum dose of anti-snake venom required and its outcome based on severity of envenomation in snakebite case

Background: Snakebite is an important occupational hazard in India as it is always been a land of poisonous snakes. The isssue which the physician confronts while treating a snake bite patient is assesment of degree of envenomation and requirement of ASV dose. Aims and Objectives: This study was taken to evaluate the optimum dose of anti-snake venom (ASV) required based on the severity of envenomation. Materials and Methods: Patients with a history of snakebite brought to the Department of General Medicine, Hassan, were included in this study. The study was conducted during the period from December 2014 to June 2016. The sample size of 80 patients was included in the study after fulfilling the inclusion criteria. Results: A total of 80 patients were included in the study. The majority of the victims were males (70%), age between 21 and 40 years (47.5%), and agriculture was the main occupation (67.3%). 51.25% did not identify the snake. The most poisonous were viper and cobra types which were 36.5% and 12.5%, respectively. A delay in lag time of 8.99±8.2 h was observed in severe envenomation. Overall, 51 cases (63.75%) had cellulitis, and 3 (3.75%) in the severe group required fasciotomy. Twenty percent had hematologic derangements. Ten percent of patients had developed renal failure and one required dialysis. 8.75% of patients developed respiratory failure and all required mechanical ventilation. The average dose of ASV vials used in mild, moderate, and severe envenomation was 9.04±3.51 vials, 18.5±5.27 vials, and 28.6±7.30 vials, respectively. The overall mortality rate was 5%. Conclusions: The optimum dose of ASV required in mild, moderate, and severe envenomation is 9.04±3.51 vials, 18.5±5.27 vials, and 28.6±7.30 vials, respectively to neutralize the circulating venom and lower the risk of development of serious complications.

Presentation, treatment profiles, and outcome of snake bite patients presented in emergency department at a tertiary hospital in Eastern Nepal.

Snake bite is one of the most common animal bites in Nepal. Different species of snake cause different clinical presentations. The incidence of snakebite is very high in rural Nepal. The objectives were to assess the presenting pattern, demographic profile, outcome, and treatment profiles of snakebite victims admitted to the emergency ward. A retrospective cross-sectional study was conducted among the patients who presented in emergency department with alleged history of snake bites from 2015 to 2016. The patient's record files were reviewed and the relevant data were recorded on a self-designed proforma. Descriptive statistics were calculated using SPSS version 11.5. Out of 137 snakebite victims, 73 (53.3%) were female. The mean age was 35.17 ± 18.27 years. The upper limb (59%) was the most common site for snake bites followed by the lower limb (35.1%). Fifty patients (36.2%) were bitten by snakes during night (20.00-2.59 AM). Twenty-eight (20.4%) patients presented with ptosis as the most common sign and symptom followed by diplopia (15.3%). Out of 137 patients, 39 (28.5%) were admitted, 65 (47.4%) discharged, and 12 (8.8%) patients expired. Antisnake venom was given to 30 patients among which 23 patients (76.7%) were improved. Snake bite is one of the major problems in rural Nepal. It can be easily managed if treatment is given properly and in a timely manner. The importance of effective first aid management and effective treatment have to be disseminated among the peoples in rural areas via social media and radio.

OCULAR INVOLVEMENT IN SNAKEBITE PATIENT: A CASE TO REMEMBER

Introduction : Snake bite cases in Indonesia are not rare with mild to catastrophic consequences on the bitten subject due to its hemolytic and neurotoxic effects. This case represents a rare ocular neurotoxic effect of snake’s venom that cause binocular diplopia and ptosis in a child.
 Case Illustration : A 9 year-old boy was consulted to ophthalmologist with chief complaint of binocular diplopia. He was hospitalized after being bitten by a snake on his right hand and had an episode of delirious state. Ophthalmologic examination revealed ptosis and exotropia of his left eye in primary position. Further examination of anterior and posterior segments showed good results. His visual acuity was unaffected. Intravenous antivenom was administered and the bite wound was taken care. The boy was discharged from the hospital with a good general condition but still an opthalmoplegia. After a week of follow up the diplopia diminished and his ocular motility was recovered.
 Discussion : Ocular manifestations in snake bite case might be missed because of delirious state of the patients. Snake venom can cause ptosis and ophthalmoplegia (neurotoxic) along with uveitis, optic neuritis, central retinal artery occlusion or vitreous and retina hemorrhage due to its hemolytic effect. Time interval between the bite and treatment is one of crucial factor that indicate the patient’s prognosis.
 Conclusion : Thorough examination of anterior to posterior ocular segments is needed in every snake bitten patients to rule out any further ocular complication. An early administration of intravenous antivenom is still a mandatory.

OCULAR INVOLVEMENT IN SNAKEBITE PATIENT: A CASE TO REMEMBER

Introduction : Snake bite cases in Indonesia are not rare with mild to catastrophic consequences on the bitten subject due to its hemolytic and neurotoxic effects. This case represents a rare ocular neurotoxic effect of snake’s venom that cause binocular diplopia and ptosis in a child.
 Case Illustration : A 9 year-old boy was consulted to ophthalmologist with chief complaint of binocular diplopia. He was hospitalized after being bitten by a snake on his right hand and had an episode of delirious state. Ophthalmologic examination revealed ptosis and exotropia of his left eye in primary position. Further examination of anterior and posterior segments showed good results. His visual acuity was unaffected. Intravenous antivenom was administered and the bite wound was taken care. The boy was discharged from the hospital with a good general condition but still an opthalmoplegia. After a week of follow up the diplopia diminished and his ocular motility was recovered.
 Discussion : Ocular manifestations in snake bite case might be missed because of delirious state of the patients. Snake venom can cause ptosis and ophthalmoplegia (neurotoxic) along with uveitis, optic neuritis, central retinal artery occlusion or vitreous and retina hemorrhage due to its hemolytic effect. Time interval between the bite and treatment is one of crucial factor that indicate the patient’s prognosis.
 Conclusion : Thorough examination of anterior to posterior ocular segments is needed in every snake bitten patients to rule out any further ocular complication. An early administration of intravenous antivenom is still a mandatory.

Effect of Envenomation on Serum Hepatic Biomarkers in Snake (Echis Ocellatus) Bitten Individuals in Zamko Comprehensive Health Centre of the Jos University Teaching Hospital, North Central Nigeria.

Snake bite is a neglected public health issue in many tropical and subtropical countries of the world. About 5.4 million snakebites occur each year, resulting in 1.8 to 2.7 million cases of envenomation yearly. Hepatic markers have been reported to rise 3-6 hours after injection of venom in experimental animals. This study aims to biochemically assess ALT, AST and GGT levels as biomarkers of Echis ocellatus envenomation in victims of snake bite presenting at JUTH Comprehensive Health Centre Zamko 6hours post-bite and compare with values in those bitten by non-venomous snakes. The study was a comparative cross-sectional study where serum levels of AST, ALT and GGT were compared between the study group and the control group. Of the 150 respondents, 75 from each study group, 90(60.0%) were Male while 60(40.0%) were Female, with a Male to Female ratio of 1.5:1. The most predominant age group was 20-29 years 57(38.0%), the mean age was 39 years. The most predominant occupation was farming 82(54.7%). The majority 82(54.7%) had a secondary level of education. 91(60.7%) were married. A large majority of 123(82.0) had Christianity as their religion. We found a significant increase in the levels of AST (47.45IU/L) and GGT (61.62 IU/L) in the study group compared to AST (25.88IU/L), GGT (29.61IU/L) in the control group at p<0.05, while the level of ALT was similar in both groups at p>0.05. This implies that serum levels of AST and GGT can be used to diagnose envenomation in snakebite patients.

Fasciotomy in Snake Bite Victims and Renal Outcome in a Tertiary Care Hospital

Background: Snake bite is a neglected tropical disease. More than 50% of death due to snake bite in the world occurs in India. Acute kidney injury (AKI) is the cause of morbidity and mortality in viper bite. The compartment syndrome is a rare manifestation of snake bite. There is paucity of data on the role of fasciotomy in viper bite.Methods: A prospective observational study was done in patients admitted to a tertiary care hospital in southIndia, with snake bite-associated acute kidney injury, from March 2018 to March 2020.Results: Sixteen % of patients underwent fasciotomy following snake bite. We compared the renal outcome of 21 patients, who had undergone fasciotomy following snake bite, with 65 patients with dialysis-requiring acute kidney injury following snake bite. The patients in the fasciotomy group had a lower peak serum creatinine (5.3 mg/dl), needed less number of dialysis sessions (3.9) and were on lesser number of days (6.1) on dialysis following snake bite, when compared with the group not needing fasciotomy.Conclusion: In snake bite patients presenting with compartment syndrome, fasciotomy should be considered in view of favourable renal outcome.

Clinico-epidemiological profile and outcome of snakebite patients presented to a teaching institute - A descriptive retrospective review.

Snakebites are a significant cause of morbidity and mortality in India despite availability of anti-snake venom and the absence of a large number of highly venomous snakes. This may be attributed to treatment seeking behaviour of the population. The study aims to find out common clinical features, outcome, and delay in arrival time to the hospital in snakebite cases. This is a cross-sectional retrospective record-based study among the patients presented with a history of snakebites to the Basaveshwara Medical College Hospital and Research Centre, Chitradurga, conducted from 1 January 2019 to 31 January 2021. Out of the 96 patients, the majority of snakebite victims were male and of an age group of 21-30 years. The most common site for snakebite was the lower limb, and about 57.2% of patients had visible fang marks. Among snake species identified, the most common was krait bites, followed by cobra bites. Neurotoxic envenomation manifestation and severe presentation were found in almost half (53.1%) of the cases. Almost half of the patients took 1-4 hours to arrive at the health facility. Surprisingly, only 35% cases arrived to the health care facility within an hour of snakebite. Most of the patients (82%) recovered with the treatment with very minimal fatality/mortality. Although half of the patients presented with severe forms, only 35% of the patients arrived within an hour to the health care facility. This indicates the need for an information dissemination system to avoid severe disease as well as to prevent mortality.

Clinical characteristics of snakebite patients attending a tertiary hospital in Hangzhou, southeast China.

Venomous snakebite is a neglected yet an important public health problem in China, and few studies have focused on them so far. The aim of this study is to investigate clinical characteristics of snakebites patients in a tertiary hospital in Hangzhou, southeast China. A total of 416 snakebite cases were included in this retrospective study. The data were collected from the medical records including demographics, clinical manifestations, management and outcomes. Of the 416 patients with venomous snakebites, 248 were male, and the average age was 54.6 years. The majority of cases occurred in rural in May to September. Out of all the venomous bites, Gloydius brevicaudus accounted for the highest percentage (55.3%). Hands were the most vulnerable site to snakebites (47.4%). Patients had clinical manifestations of pain (100%), swelling (100%), wound necrosis (25.7%), hemorrhagic blister (18.3%), and blister (8.7%). Three hundred and ninety-two patients received antivenom administration, and most were treated within six hours after bites. Twenty-six patients received surgical treatments, and 90 patients developed venom-induced consumption coagulopathy. No deaths have occurred in this study. Hangzhou is one of the regions with high affecting of snakebites in China. The results of this study will increase the understanding of the clinical characteristics of venomous snakebites in Hangzhou area.

Delayed Neurotoxic Paralysis with Confounding Hypokalaemia

Snakebite is a major health issue in India and developing nations across the globe. Common krait bites are associated with delayed paralysis and locked-in syndrome. Locked-in syndrome has been documented among patients of snakebite. Our case is unique due to the confounding effect of hypokalaemia which may confuse the physician as hypokalaemic periodic paralysis (HPP), a rare genetic condition which can also be precipitated by a stressful event such as snakebite. To the best of our knowledge, we could not associate the presence of hypokalaemia in patients of neurotoxic snakebite. As krait bite are often not associated with the history of having witnessed, a snake due to its nocturnal habit and painless bite, such hypokalaemia should not lead the physician to misdiagnose this snakebite as severe HPP. We urge our fellow researchers to look out for similar findings in their patients. Key messages: Locked-in syndrome in snakebites can be due to the effect of the venom in blood onto the ventral pons. To the best of our knowledge, we could not associate the presence of hypokalaemia in patients of neurotoxic snakebite. We presume this hypokalaemia to be nutritional in origin. As krait bites are often not associated with the history of having witnessed, a snake due to its nocturnal habit and painless bite, such hypokalaemia should not lead the physician to misdiagnose this snakebite as severe HPP. Keywords: Case report, Hypokalaemia, Neurotoxic, Snake envenomation

Evaluation of clinical features of snakebite in patients referred to Razi Hospital in Qaemshahr City

BackgroundSnakebites are one of the most important health issues globally that cause morbidity, discomfort, and even death. This study aimed to evaluate the clinical features of snakebite in patients referred to Razi Hospital in Ghaemshahr city. MethodsIn this descriptive, cross-sectional study, 325 snakebite patients admitted to Razi Hospital in Qaemshahr city between the years 2014 and 2019 were studied. All information was extracted from patients' medical records. SPSS software version 25 was used to analyze the data. ResultsPatients ranged in age from 9 to 71 years with a mean of 36.6±10.7 years. 238 cases (73.2%) were male and 87 cases (26.8%) were female. The highest frequency of bites with 162 cases (49.8%) was related to the lower extremities and summer with 122 cases (37.5%) had the highest frequency of bites. The highest frequency of local symptoms was related to bruising (17.8%), erythema (16.9%), and pain (15.7%), and the highest frequency of systemic symptoms were related to weakness (24%), and sweating (14.2%). For 88.2% of cases, antivenom was used. 33.8% of the patients received antibiotics, mostly ciprofloxacin+clindamycin. ConclusionThe results obtained in this study showed that common local complications in patients included bruising, erythema, and edema and systemic complications such as weakness, subcutaneous bleeding, and sweating. Antivenom was used for most of the cases and no deaths were reported. Also, unscientific actions such as incision and suction are still performed in cases that require more awareness and training.