Acute Physiology and Chronic Health Evaluation (APACHE II) Calculator

Rectal temperature
Mean Arterial Pressure
Heart rate
Respiratory rate
Oxygen saturation
If FiO2 < 50%, use PaO2:
If FiO2 ≥ 50%, use Gradient A-a en O2:
arterial pH
Blood creatinine

Severe organ dysfunction* or Immunodepression
* Liver disease: Cirrhosis proven by biopsy, documented portal hypertension, episodes of upper gastrointestinal bleeding from Portal Hypertension, episodes of encephalopathy or hepatic coma.
* Heart disease: NYHA Class 4 disease.
* Respiratory disease: Restrictive, obstructive or vascular disease severely reducing physical activity; Documented chronic hypoxia or hypercapnia, secondary polycythaemia, severe pulmonary hypertension or respiratory dependence.
* Renal disease: Chronic hemodialysis.
* Immunodepression:Patient under immunosuppressive treatment, chemotherapy, radiotherapy, long-term high-dose steroids, prior disease such as leukemia, lymphoma, AIDS.

Score :

Predictable mortality: %

Acute Physiology and Chronic Health Evaluation (APACHE II)

APACHE II ("Acute Physiology And Chronic Health Evaluation II") is a disease severity classification system (Knaus et al., 1985). It is applied within 24 hours of a patient's admission to the intensive care unit: an integer score from 0 to 71 is calculated from several measurements; higher scores correspond to more severe disease and a higher risk of death. The first APACHE model was presented by Knaus et al. in 1981.

APACHE II was designed to measure disease severity in adult patients admitted to intensive care units. It has not been validated for use in children or young people under the age of 16.

This scoring system is used in several ways, including:

Certain procedures or medications are only given to patients with a certain APACHE II score

The APACHE II score can be used to describe a patient's morbidity when comparing results with other patients.

The predicted mortalities are averaged for groups of patients in order to specify the morbidity of the group.

Even though newer notation systems, such as APACHE III, have replaced APACHE II in many places, APACHE II continues to be widely used as a large amount of documentation is based on it.

Acute Physiology and Chronic Health Evaluation (APACHE II) Calculator

The APACHE II score (Acute Physiology and Chronic Health Evaluation II) is a score used to assess the severity of a patient and is one of the scores used in intensive care and resuscitation. It can be calculated within 24 hours of patient admission.