Seasonal variation of Russell's viper bites.

<p>Distribution of the confirmed and suspected cases of Russell's viper bites admitted to the Teaching Hospital, Anuradhapura from January to December, 2010. Note the high rate of admissions during February – April and September – November representing paddy harvesting and chena cultivation seasons.</p

The scoring system adopted to grade the severity of envenoming and the severity of abdominal pain.

<p>The scoring system adopted to grade the severity of envenoming and the severity of abdominal pain.</p

Systemic involvement of the proven Russell's viper bite patients (n = 55) (percentages within parenthesis).

<p>Systemic involvement of the proven Russell's viper bite patients (n = 55) (percentages within parenthesis).</p

Correlations between abdominal pain severity versus different clinical parameters of the 55 proven Russell's viper bite patients.

<p>(Statistical test -Spearman's rho.).</p

Validation of abdominal pain against systemic envenoming^*.

<p>* [Sensitivity –81.6%, Specificity –82.4%, Positive predictive value –91.2%, Negative predictive value –66.7%, False positives 3 (17.6%), False negatives 7 (18.4%)].</p

Clinical findings of the 55 proven and 154 suspected Russell's viper bite patients. (percentages within parenthesis).

<p>Clinical findings of the 55 proven and 154 suspected Russell's viper bite patients. (percentages within parenthesis).</p

Correlations between length of the snake versus different clinical parameters of 48 from the 55 confirmed Russell's viper bite patients.

<p>(Statistical test -Spearman's rho.).</p

The numbers of antivenom vials and antivenom cycles received by the proven and probable Russell's viper bite patients.

<p>(Percentages within parenthesis.).</p

Time related change of sfEMG jitter and blocks in patients developed severe neurotoxicity.

<p><b>A,</b> Scatter plots showing the time related change of the median MCD in jitter of the 17 patients with severe neurotoxicity, compared to normal subjects. Note the high median of the MCD in jitter values seen even at 6 weeks after the snakebite, compared to the normal subjects; <b>B,</b> scatter plots showing time related changes in the percentage of recorded fibres with neuromuscular blocks in these patients at the same times. Neuromuscular blocks are still present 6 weeks after the snakebite.</p

Comparison of the clinical effects and treatment of the patients who developed no neurotoxicity, mild neurotoxicity and severe neurotoxicity following common krait envenoming.

<p>Comparison of the clinical effects and treatment of the patients who developed no neurotoxicity, mild neurotoxicity and severe neurotoxicity following common krait envenoming.</p