Reference
Definitions
DYSPNEA ( Medical Research
Council Scale)
category 0, No dyspnea
category 1, Slight degree of dyspnea ( troubled by shortness of
breath when hurrying on the level or walking up a slight hill)
category 2, Moderate degree of dyspnea (walks slower than people of
the same age on the level because of breathlessness)
category 3, Moderatly severe degree of dyspnea (has to stop because
of breathlessness when walking at own pace on the level)
category 4, Severe degree of dyspnea (stops for breath after walking
about 100 yards or after a few minutes on the level)
category 5, Very severe degree of dyspnea (too breathless to leave
the house or breathless when dressing or undressing)
ASA Physical Status
Classification System
1: A normal healthy patient
2: A patient with mild systemic disease
3: A patient with severe systemic disease
4: A patient with severe systemic disease that is a constant threat
to life
5: A moribund patient who is not expected to survive without the
operation
6: A declared brain-dead patient whose organs are being removed for
donor purposes
These definitions appear in each annual edition of the ASA
Relative Value Guide. There is no additional information that
will help you further define these categories.
World Health Organization(
WHO) Zubrod Performance Status Scale
0: Normal activity
1: Symptoms, but nearly fully ambulatory
2: Some bed time, but needs to be in bed less than 50% of normal
daytime
3: Need to be in bed greater than 50% of normal daytime
4: Unable to get out of bed
Comorbidity
In development data set, 94.6% of the comorbidity was related to
10 major diagnoses:
Smoking addiction (27.1%), history of cancer (11.8%), COPD (11.5%),
arterial hypertension (10.5%), heart disease (10.4%), diabete
mellitus (7.6%), peripheral vascular disease (6.1%) Obesity (4.9%)
and alcoholism ( 4.7%). No other diagnoses, with the exception of
hyperlipemia ( 2.9%) were mentioned for more than 1% of
patients.