<prompt> APACHE II score involves all except?GCSArterial PHMean BPSerum amylase  <response>: Ans. d Serum amylaseRef-.Harrison 19th edition, Chapter 267 Acute Physiology and Chronic Health Evaluation II is the most commonly used Severity of illness scoring system in America Age, type of ICU admission after elective surgery vs. nonsurgical or after emergency surgery, a chronic health problem score, and 12 physiologic variables the most severely abnormal of each in the first 24 h of ICU admission are used to derive a score. The predicted hospital mortality is derived from a formula that takes into account the II score, the need for emergency surgery, and a weighted, disease-specific diagnostic categoryVITALS Rectal temperature, degC Mean blood pressure, mmHg Heart rate Respiratory rate Arterial Ph Oxygenation If Flo20.5,useA-aDo2 If Fo2 0.5, use Pao2LABS Serum sodium, meqL Serum potassium, meqL Serum creatinine, mgdL Hematocrit WBC count, 103mL Glasgow Coma ScorePoints Assigned to AgeAge, Years4545-5455-6465-7475Points Assigned to Chronic HealthNoneIf patient is admitted after elective surgeryIf patient is admitted after emergency surgery or for reasons other than after elective surgery 