Does the traditional snakebite severity score correctly classify envenomated patients?

Area of Science:

• Clinical Medicine
• Toxicology
• Emergency Medicine

Background:

• Snakebites are a significant public health concern requiring effective antivenom administration.
• Current snakebite severity grading scales may not fully capture the need for additional antivenom.
• Establishing clear guidelines for antivenom use can improve patient management and outcomes.

Purpose of the Study:

• To inform domestic guidelines for antivenom administration in snakebite patients.
• To identify factors predicting the need for additional antivenom beyond initial treatment.
• To refine snakebite severity assessment for optimal therapeutic decisions.

Main Methods:

• Retrospective observational case series of 128 snake envenomation patients.
• Patients categorized based on requiring additional antivenom after initial treatment.
• Analysis of clinical factors, laboratory results, and outcomes in relation to antivenom administration.

Main Results:

• Additional antivenom was needed in 43 of 128 patients, often due to progressing local symptoms.
• Patients requiring more antivenom had higher initial severity scores and presented with more severe local effects.
• Local effect pain score was an independent predictor for additional antivenom need (OR 2.477), with an optimal cut-off of 1.5.

Conclusions:

• The local effect pain score is a vital consideration in snakebite management using traditional severity scales.
• A local effect pain score exceeding 2 suggests the potential need for additional antivenom.
• Frequent patient assessment and consideration of further antivenom are recommended when pain scores are elevated.