Hi, I would like to know the following:

1. How many Cardiac Caths are done in the US each year?
2. Of those, what is the breakdown between diagnostic and
interventional caths, plus in-patient vs. out-patient?

I'm looking for an answer like this:
1. There are ___ thousand caths done in the US each year.
2. ___ % of those are out-patient diagnostic caths   
   ___ % of those are in-patient diagnostic caths
   ___ % of those are out-patient interventional caths
   ___ % of those are in-patient interventional caths

<Breakdown of cardiac cath procedures.

1. There are 2.7 million caths done in the US each year.
2.  32.2% of those are out-patient diagnostic caths   
3. 34.67% of those are in-patient diagnostic caths
4. 15.95 % of those are out-patient interventional caths
5.  17.17 % of those are in-patient interventional caths


References:
In patient cardiac caths ? 1.4 million.
Source: American Heart Association.
http://www.americanheart.org/downloadable/heart/1136820889417CardiovascularProc06.pdf

2002
2.7 million diagnostic angiograms of the coronary arteries
4.8 million diagnostic angiograms performed in arterial
Source: United States District Court. Doraville Management II Corp v
Epix Pharmaceuticals, Inc.
http://www.whafh.com/modules/case/docs/3636_cid_3_EPIX%20Complaint.PDF


Calculated from the figures below of procedures carried out:
66.87%  are diagnostic
33.13% are interventional

2,000 diagnostic and 500 interventional
Source: University of Washington School of Medicine.
http://64.233.183.104/search?q=cache:waW67vsfTC4J:depts.washington.edu/cardweb/patient_care/interventional.htm+%22interventional+catheterizations%22&hl=nl&ct=clnk&cd=3

2,236 diagnostic 
448 interventional 
Source: The Evangelical Covenant Church
http://www.covchurch.org/cov/news/item2567.html

5,900 diagnostic
3,300 interventional
Source: Dr. Samin Sharma Leads again in State Angioplasty Report.
http://www.mountsinai.org/hso/interwoven.jsp?nav=print&url=/msh_news/msh_sharma_2005.html


1,800 diagnostic
500 interventional 
Source: Butler Health System
http://www.butlerhealthsystem.org/featured_services/heart_center/heart_center.asp

1109 diagnostic 
240 interventional
State Agency Report, Swedish Covenant Hospital, Chicago, Illinois.
http://64.233.183.104/search?q=cache:RVQhhV3lmfQJ:www.idph.state.il.us/about/hfpb/aug03sars/03-025.pdf+%22interventional+catheterizations%22&hl=nl&ct=clnk&cd=31

Diagnostic 3901
Interventional 2524
Source : Cathedral Healthcare System
http://64.233.183.104/search?q=cache:Wd9_-ihTSM8J:www.cathedralhealth.org/documents/2003CHSAnnualReport.pdf+%22interventional+catheterizations%22&hl=nl&ct=clnk&cd=121

Diagnostic 3771
Interventional 2751
Source: Christiana Care
http://www.christianacare.org/body.cfm?id=324

Other terms to describe a cardiac cath are:
Coronary arteriogram
Corononary angiogram
Dye study of the heart.
Source: Rogue Valley Medical Centre
http://www.asante.org/StandardPage.asp?MenuID=623>


<Search strategy:>

<"coronary catheterization" million>
<://www.google.com/search?hl=nl&rls=GGLG%2CGGLG%3A2006-12%2CGGLG%3Aen&q=%22coronary+catheterization%22+million&lr=>

<"interventional catheterizations">
<://www.google.com/search?q=%22interventional+catheterizations%22&hl=nl&lr=&rls=GGLG,GGLG:2006-12,GGLG:en&start=20&sa=N>

<"million coronary angiograms" 2006>
<://www.google.com/search?hl=nl&rls=GGLG%2CGGLG%3A2006-12%2CGGLG%3Aen&q=%22million+coronary+angiograms%22+2006&lr=>

<"american heart association">
<://www.google.com/search?hl=nl&rls=GGLG%2CGGLG%3A2006-12%2CGGLG%3Aen&q=%22american+heart+association%22&lr=>


<Hope this helps.>

---

Request for Answer Clarification by mnsean-ga on 08 Jun 2006 16:33 PDT

Thanks for the info, although I don't quite see how some of the arithmetic works:

1. Can you point out how you arrived at the overall 2.7 million
figure?  There is the second reference that states there were 2.7
million diagnostic angiograms, but that would not include
interventional cases, so it is not clear how the total number of caths
can be 2.7 million.
2. Also, based upon your first reference, it looks like there are
about 1.4 million inpatient diagnostic caths.  If I multiply .3467
(percentage of in-patient diagnostic caths) times 2,700,000, I get
936,090, which does not match with the 1.4 million figure.
3. Finally, how did you arrive at the exact percentages?  I see that
you derived a diagnostic vs. interventional breakdown based upon a
sampling of hospitals, but I'm not clear on how you derived the
in-patient vs. out-patient breakdown.

Don't get me wrong, I really appreciate this information.  It looks
like you combined national data on in-patient cases with empirical
information from a handfull of institutions to arrive at the answer. 
My guess is that the best answer just isn't out there because the data
is not available, is that what you found?
Thanks,
Sean

---

Clarification of Answer by belindalevez-ga on 09 Jun 2006 03:08 PDT

< I have revised the figures based on further references.

Total caths an estimated 3.7 million.

1. There are an estimated 3.7 million caths done in the US each year.
2.  35.13% of those are out-patient diagnostic caths   
3. 37.83% of those are in-patient diagnostic caths
4. 17.94 % of those are out-patient interventional caths
5.  9.08 % of those are in-patient interventional caths


Using the 2.7 million figure for the total number of diagnostic
procedures. There are 1.4 million in patient diagnostic and therefore
1.3 million out patient diagnostic caths.
This gives the following percentages.
In patient diagnostic ? 51.85%
Out patient diagnostic - 48.15%.

1 million PCI procedures.
664,000 in patient PCI procedures.
In patient ? 66.4%
Outpatient ? 33.6%

Between 1979 and 2002, the total number of cardiovascular operations
and procedures performed in the United States increased 470%; during
that same period, the number of cardiac catheterizations increased
389%. In 2002 alone, there were an estimated 1,463,000 inpatient
cardiac catheterizations performed.

Beyond diagnostic catheterizations, it is estimated that more than 1
million percutaneous coronary intervention (PCI) procedures are
performed annually in the U.S.
Source: 2005 Guideline Update for Percutaneous Coronary Intervention.
http://64.233.183.104/search?q=cache:UZE88Y24XwwJ:www.cardiosource.com/ExpertOpinions/Programhlts/interviewDetail.asp%3FinterviewID%3D258+interventional+%22cardiac+catheterizations%22+estimated&hl=nl&ct=clnk&cd=21

In 2004 nearly 1 million PCI procedures were performed in the US.
Source: SCAI
http://64.233.183.104/search?q=cache:R9GlVkWgYBwJ:www.scai.org/pdf/PCI%2520Fact%2520Sheet%2520final.pdf+%22pci+procedures%22+million&hl=nl&ct=clnk&cd=8

In 2003, an estimated 664,000 inpatient PCI procedures were performed
on 652,000 patients.
Source: Health care in America: Trends in Utilization. CDCHS 2003.
http://66.249.93.104/search?q=cache:lwl5zyRBcmkJ:www.americanheart.org/downloadable/heart/1140534985281Statsupdate06book.pdf+%22percent+of+pci%22+outpatient+inpatient&hl=nl&ct=clnk&cd=3

There are more than 760,000 PCI procedures each year in the U.S.
Source: HCUPN et 2002.
http://64.233.183.104/search?q=cache:ArifJcPBw-kJ:www.managedcaremag.com/archives/0504/0504.peer_restenosis.pdf+%22pci+procedures%22+million+inpatient&hl=nl&ct=clnk&cd=10>


<Hope this helps.>

This person's original answer was not quite what I needed but, after
some clarification, I now have a very good answer with solid data,
thanks!

You can stick something in a persons heart, and they can go home the same day?

Really?

<Thankyou for the tip.>