bluebutton/_site/lib/parsers/ccda/vitals.js

BlueButton.js helps developers navigate complex health data with ease.

/*
 * Parser for the CCDA vitals section
 */

Parsers.CCDA.vitals = function (ccda) {
  
  var parseDate = Documents.parseDate;
  var parseName = Documents.parseName;
  var parseAddress = Documents.parseAddress;
  var data = [], el;
  
  var vitals = ccda.section('vitals');
  
  vitals.entries().each(function(entry) {
    
    el = entry.tag('effectiveTime');
    var entry_date = parseDate(el.attr('value'));
    
    var result;
    var results = entry.elsByTag('component');
    var results_data = [];
    
    for (var i = 0; i < results.length; i++) {
      result = results[i];
      
      el = result.tag('code');
      var name = el.attr('displayName'),
          code = el.attr('code'),
          code_system = el.attr('codeSystem'),
          code_system_name = el.attr('codeSystemName');
      
      el = result.tag('value');
      var value = parseFloat(el.attr('value')),
          unit = el.attr('unit');
      
      results_data.push({
        name: name,
        code: code,
        code_system: code_system,
        code_system_name: code_system_name,
        value: value,
        unit: unit
      });
    }
    
    data.push({
      date: entry_date,
      results: results_data
    });
  });
  
  return data;
};