Disease Model
The survival calculation is optimally used with data obtained from the first forty-eight hours of hospitalization. This time frame was carefully selected to best capture the patient's presenting clinical condition or degree of disease. Subsequent to the initial admission, the Survival Calculator also uses up to thirty days of life support information .
The assessment of survival is calculated as a continuous probability from 0% to 99.9%. For display purposes, probabilities are rounded to the nearest percent, and the highest possible probability is set at 99% (and not at 100%), since risk of heart attack mortality always exists.
Some variables increase the likelihood of survival, while others
increase the likelihood of mortality. The following chart summarizes
the directional impact of the independent variables.
Patient History | Age | |
Angina or MI | ||
CHF | ||
Angioplasty | ||
Stroke or TIA | ||
Heart Exam | Blocked Arteries | |
Ejection fraction | ||
CHF | ||
Hypertrophy | ||
Acute MI on EKG | ||
MI, unspecified age | ||
Life Support | Mechanical vent | |
Vital Signs | Glasgow coma | |
Respiration rate | ||
Systolic BP | ||
Lab Results | BUN | |
CPK | ||
Glucose | ||
pH | ||
PO2 | ||
SGOT | ||
WBC |
© 1996 by MediQual Systems, Inc. All Rights Reserved.