|
|
A Risk Score To Predict Survival After
Defibrillator Implantation. Results Of A Real-World Sample Of 2467 Patients
In Ontario.
|
|
|
|
Risk Factors
|
Select Values Here
|
Risk Points
|
|
|
|
Age (yrs)
|
|
|
|
|
|
Heart Failure within
6 months before ICD?
|
|
|
|
|
|
Peripheral vascular
disease?
|
|
|
|
|
|
Chronic pulmonary
disease?
|
|
|
|
|
|
Renal disease?
|
|
|
|
|
|
Rheumatologic
disease?
|
|
|
|
|
|
Microvascular complications of
diabetes?
|
|
|
|
|
|
Metastatic or nonmetastatic cancer?
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Number Of
Patients In This Subset
|
|
|
|
|
|
1-Year Mortality (%)
|
|
|
|
|
|
2-Year Mortality (%)
|
|
|
|
|
|
Lee DS, Tu
JV, Austin PC, Dorian P, Yee R, Chong A, Alter DA, Laupacis A. Effect
of cardiac and noncardiac conditions on survival after defibrillator
implantation. J Am Coll Cardiol, 2007; 49:2408-2415.
|
|
|
|
Data Source: University of
Toronto, other Ontario sites. Non-randomized. Period: 1997 - 2003.
|
|
|
|
Comment: This valuable study has several limitations.
(1) Useful information such as medications
|
|
|
|
and indication for defibrillator implant (primary prevention vs
secondary prevention) were not available.
|
|
|
|
However, 83% of patients had suffered cardiac arrest, VT or VF,
suggesting secondary prevention.
|
|
|
|
(2) 62% of patients had no recent CHF or non-cardiac co-morbidities.
The highest-risk subgroups
|
|
|
|
contained relatively small numbers of patients. Larger, more complete
studies are needed. (3) At 2 years
|
|
|
|
post-implant, absolute survival advantage for ICD patients was
about 2% versus matched controls. (Note: The Risk Score is designed so that
only the first 2 non-cardiac morbidities selected contribute.)
|
|
|
|
Web calculator design and HTML transfer by Dr. John Coyle, 2007.
|
|