优化规则判断血压情况

nlp/src/main/java/org/diagbot/nlp/rule/pretreat/PretreatmentVital.java

@@ -35,8 +35,8 @@ public class PretreatmentVital extends Pretreatment {
                 result.setValue(NlpUtil.concept(l, NegativeEnum.VITAL_INDEX));
                 preResults.add(result);
             } else if (NlpUtil.isFeature(l.getProperty(), nees_digit) && l.getText().contains("/")) {
-                int position = ++i;
-                while (position < ++i + 3 && position < lexemes.size()) {
+                int position = i + 1;
+                while (position < i + 4 && position < lexemes.size()) {
                     if (!"mmHg".equals(lexemes.get(position).getText())) {
                         position++;
                         continue;