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'''Editor(s)-In-Chief:''' [[C. Michael Gibson, M.S., M.D.]] [mailto:charlesmichaelgibson@gmail.com]; {{ATI}}; {{AE}}; {{Rim))
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==Overview==
==Overview==
The precise number of people affected by venous thromboembolism (VTE), that is either [[deep vein thrombosis]], pulmonary embolism (PE), or both, is unknown, but estimates range from 300,000 to 600,000 (1 to 2 per 1,000, and in those over 80 years of age, as high as 1 in 100) each year in the United States.  Estimates suggest that 60,000-100,000 Americans die of VTE, 10 to 30% of which will die within one month of diagnosis.  Sudden death is the first symptom in about one-quarter (25%) of people who have a PE.  One-third (about 33%) of people with VTE will have a recurrence within 10 years.  Approximately 5 to 8% of the U.S. population has one of several genetic risk factors, also known as inherited [[thrombophilia]]s in which a genetic defect can be identified that increases the risk for [[thrombosis]].<ref>[http://www.cdc.gov/ncbddd/dvt/data.html CDC- Deep Vein Thrombosis (DVT) / Pulmonary Embolism (PE) — Blood Clot Forming in a Vein]</ref><ref name="pmid20331949">{{cite journal| author=Beckman MG, Hooper WC, Critchley SE, Ortel TL| title=Venous thromboembolism: a public health concern. | journal=Am J Prev Med | year= 2010 | volume= 38 | issue= 4 Suppl | pages= S495-501 | pmid=20331949 | doi=10.1016/j.amepre.2009.12.017 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20331949  }} </ref>
The precise number of people affected by [[venous thromboembolism]](VTE), that is either [[deep vein thrombosis]], pulmonary embolism (PE), or both, is unknown, but estimates range from 300,000 to 600,000 (1 to 2 per 1,000, and in those over 80 years of age, as high as 1 in 100) each year in the United States.  Approximately 5 to 8% of the U.S. population has one of several [[genetic]] risk factors, also known as [[inherited]] [[thrombophilia]]s in which a [[genetic]] defect can be identified that increases the risk for [[thrombosis]].<ref name=CDC>[http://www.cdc.gov/ncbddd/dvt/data.html CDC- Deep Vein Thrombosis (DVT) / Pulmonary Embolism (PE) — Blood Clot Forming in a Vein]</ref><ref name="pmid20331949">{{cite journal| author=Beckman MG, Hooper WC, Critchley SE, Ortel TL| title=Venous thromboembolism: a public health concern. | journal=Am J Prev Med | year= 2010 | volume= 38 | issue= 4 Suppl | pages= S495-501 | pmid=20331949 | doi=10.1016/j.amepre.2009.12.017 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20331949  }} </ref>


==Epidemiology and Demographics==
==Epidemiology and Demographics==
===Incidence===
===Incidence===
The precise number of people affected by venous thromboembolism (VTE), that is either deep vein thrombosis (DVT), [[pulmonary embolism]] (PE), or both, is unknown, but estimates range from 300,000 to 600,000 (1 to 2 per 1,000, and in those over 80 years of age, as high as 1 in 100) each year in the United States.<ref>[http://www.cdc.gov/ncbddd/dvt/data.html CDC- Deep Vein Thrombosis (DVT) / Pulmonary Embolism (PE) — Blood Clot Forming in a Vein]</ref><ref name="pmid20331949">{{cite journal| author=Beckman MG, Hooper WC, Critchley SE, Ortel TL| title=Venous thromboembolism: a public health concern. | journal=Am J Prev Med | year= 2010 | volume= 38 | issue= 4 Suppl | pages= S495-501 | pmid=20331949 | doi=10.1016/j.amepre.2009.12.017 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20331949  }} </ref>
* The precise number of people affected by [[venous thromboembolism]] (VTE), that is either [[deep vein thrombosis]] (DVT), [[pulmonary embolism]] (PE), or both, is unknown, but estimates range from 300,000 to 600,000 (1 to 2 per 1,000, and in those over 80 years of age, as high as 1 in 100) each year in the United States.<ref name=CDC>[http://www.cdc.gov/ncbddd/dvt/data.html CDC- Deep Vein Thrombosis (DVT) / Pulmonary Embolism (PE) — Blood Clot Forming in a Vein]</ref><ref name="pmid20331949">{{cite journal| author=Beckman MG, Hooper WC, Critchley SE, Ortel TL| title=Venous thromboembolism: a public health concern. | journal=Am J Prev Med | year= 2010 | volume= 38 | issue= 4 Suppl | pages= S495-501 | pmid=20331949 | doi=10.1016/j.amepre.2009.12.017 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20331949  }} </ref>
* As depicted by the figure below, the majority of [[VTE]] events is asymptomatic; however some cases present with fatal [[PE]].


[[File:Challenge of Assessing VTE.JPG|300x400px]]
* In the United States, the annual incidence of VTE is estimated to be approximately 100 per 100,000 persons.<ref name="pmid12814979">{{cite journal |author=White RH |title=The epidemiology of venous thromboembolism |journal=Circulation |volume=107 |issue=23 Suppl 1 |pages=I4–8 |year=2003 |month=June |pmid=12814979 |doi=10.1161/01.CIR.0000078468.11849.66 |url=}}</ref>
 
* The incidence rate of [[Pulmonary embolism classification scheme#Massive PE|massive]], [[Pulmonary embolism classification scheme#Submassive PE|submassive]]  and  [[Pulmonary embolism classification scheme#Low-risk PE|low-risk]] pulmonary emboli are 5%, 40% and 55% respectively.  


===Age===
===Age===
The incidence of VTE increases with age, ranging from 1 case per 100,000 people in childhood to 500 cases per 100,000 people in the elderly.<ref name="pmid12814979">{{cite journal |author=White RH |title=The epidemiology of venous thromboembolism |journal=Circulation |volume=107 |issue=23 Suppl 1 |pages=I4–8 |year=2003 |month=June |pmid=12814979 |doi=10.1161/01.CIR.0000078468.11849.66 |url=}}</ref> Subjects who are more than 65 years of age are at three times higher risk for VTE compared to those who are 45-54 years old.<ref name="pmid15210384">{{cite journal| author=Cushman M, Tsai AW, White RH, Heckbert SR, Rosamond WD, Enright P et al.| title=Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology. | journal=Am J Med | year= 2004 | volume= 117 | issue= 1 | pages= 19-25 | pmid=15210384 | doi=10.1016/j.amjmed.2004.01.018 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15210384  }} </ref>
The incidence of [[VTE]] increases with age, ranging from < 5 cases per 100,000 people in childhood to 500 cases per 100,000 people in the elderly.<ref name="pmid12814979">{{cite journal |author=White RH |title=The epidemiology of venous thromboembolism |journal=Circulation |volume=107 |issue=23 Suppl 1 |pages=I4–8 |year=2003 |month=June |pmid=12814979 |doi=10.1161/01.CIR.0000078468.11849.66 |url=}}</ref> Subjects who are more than 65 years of age are at three times higher risk for VTE compared to those who are 45-54 years old.<ref name="pmid15210384">{{cite journal| author=Cushman M, Tsai AW, White RH, Heckbert SR, Rosamond WD, Enright P et al.| title=Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology. | journal=Am J Med | year= 2004 | volume= 117 | issue= 1 | pages= 19-25 | pmid=15210384 | doi=10.1016/j.amjmed.2004.01.018 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15210384  }} </ref>


===Gender===
===Gender===
Studies about differences in the incidence of VTE by gender have mixed results.<ref name="pmid9521222">{{cite journal |author=Silverstein MD, Heit JA, Mohr DN, Petterson TM, O'Fallon WM, Melton LJ |title=Trends in the incidence of deep vein thrombosis and pulmonary embolism: a 25-year population-based study |journal=Arch. Intern. Med. |volume=158 |issue=6 |pages=585–93 |year=1998 |month=March |pmid=9521222 |doi= |url=}}</ref><ref name="pmid8154949">{{cite journal |author=Kniffin WD, Baron JA, Barrett J, Birkmeyer JD, Anderson FA |title=The epidemiology of diagnosed pulmonary embolism and deep venous thrombosis in the elderly |journal=Arch. Intern. Med. |volume=154 |issue=8 |pages=861–6 |year=1994 |month=April |pmid=8154949 |doi= |url=}}</ref><ref name="pmid15210384">{{cite journal |author=Cushman M, Tsai AW, White RH, ''et al.'' |title=Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology |journal=Am. J. Med. |volume=117 |issue=1 |pages=19–25 |year=2004 |month=July |pmid=15210384 |doi=10.1016/j.amjmed.2004.01.018 |url=}}</ref><ref name="urlVenous Thromboembolism in Adult Hospitalizations — United States, 2007–2009">{{cite web |url=http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6122a1.htm?s_cid=mm6122a1_w |title=Venous Thromboembolism in Adult Hospitalizations — United States, 2007–2009 |format= |work= |accessdate=2012-10-06}}</ref>  In addition, the risk for VTE was reported to consistently increase with age across both genders.<ref name="pmid15210384">{{cite journal |author=Cushman M, Tsai AW, White RH, ''et al.'' |title=Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology |journal=Am. J. Med. |volume=117 |issue=1 |pages=19–25 |year=2004 |month=July |pmid=15210384 |doi=10.1016/j.amjmed.2004.01.018 |url=}}</ref>
Studies about differences in the incidence of [[VTE]] by gender have mixed results.<ref name="pmid9521222">{{cite journal |author=Silverstein MD, Heit JA, Mohr DN, Petterson TM, O'Fallon WM, Melton LJ |title=Trends in the incidence of deep vein thrombosis and pulmonary embolism: a 25-year population-based study |journal=Arch. Intern. Med. |volume=158 |issue=6 |pages=585–93 |year=1998 |month=March |pmid=9521222 |doi= |url=}}</ref><ref name="pmid8154949">{{cite journal |author=Kniffin WD, Baron JA, Barrett J, Birkmeyer JD, Anderson FA |title=The epidemiology of diagnosed pulmonary embolism and deep venous thrombosis in the elderly |journal=Arch. Intern. Med. |volume=154 |issue=8 |pages=861–6 |year=1994 |month=April |pmid=8154949 |doi= |url=}}</ref><ref name="pmid15210384">{{cite journal |author=Cushman M, Tsai AW, White RH, ''et al.'' |title=Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology |journal=Am. J. Med. |volume=117 |issue=1 |pages=19–25 |year=2004 |month=July |pmid=15210384 |doi=10.1016/j.amjmed.2004.01.018 |url=}}</ref><ref name="urlVenous Thromboembolism in Adult Hospitalizations — United States, 2007–2009">{{cite web |url=http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6122a1.htm?s_cid=mm6122a1_w |title=Venous Thromboembolism in Adult Hospitalizations — United States, 2007–2009 |format= |work= |accessdate=2012-10-06}}</ref>  In addition, the risk for [[VTE]] was reported to consistently increase with age across both genders.<ref name="pmid15210384">{{cite journal |author=Cushman M, Tsai AW, White RH, ''et al.'' |title=Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology |journal=Am. J. Med. |volume=117 |issue=1 |pages=19–25 |year=2004 |month=July |pmid=15210384 |doi=10.1016/j.amjmed.2004.01.018 |url=}}</ref>


===Race===
===Race===
* There is a significant difference in the incidence of VTE as it relates to race.  African Americans characteristically have the highest incidence of VTE and Caucasians rank as the second highest incidence of VTE.<ref name="pmid12814979">{{cite journal| author=White RH| title=The epidemiology of venous thromboembolism. | journal=Circulation | year= 2003 | volume= 107 | issue= 23 Suppl 1 | pages= I4-8 | pmid=12814979 | doi=10.1161/01.CIR.0000078468.11849.66 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12814979  }} </ref>
* There is a significant difference in the incidence of [[VTE]] as it relates to race.  African Americans characteristically have the highest incidence of [[VTE]] and Caucasians rank as the second highest incidence of [[VTE]].<ref name="pmid12814979">{{cite journal| author=White RH| title=The epidemiology of venous thromboembolism. | journal=Circulation | year= 2003 | volume= 107 | issue= 23 Suppl 1 | pages= I4-8 | pmid=12814979 | doi=10.1161/01.CIR.0000078468.11849.66 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12814979  }} </ref>
* Lower thrombosis incidences in non-Caucasians may be related to a lower prevalence of disorders like [[Factor V Leiden]] or [[Thrombin#Prothrombin 20210a mutation|Prothrombin 20210A mutation]].<ref name="pmid9109469">{{cite journal| author=Ridker PM, Miletich JP, Hennekens CH, Buring JE| title=Ethnic distribution of factor V Leiden in 4047 men and women. Implications for venous thromboembolism screening. | journal=JAMA | year= 1997 | volume= 277 | issue= 16 | pages= 1305-7 | pmid=9109469 | doi= | pmc= | url= }} </ref><ref name="pmid9415695">{{cite journal| author=Gregg JP, Yamane AJ, Grody WW| title=Prevalence of the factor V-Leiden mutation in four distinct American ethnic populations. | journal=Am J Med Genet | year= 1997 | volume= 73 | issue= 3 | pages= 334-6 | pmid=9415695 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9415695  }} </ref>
* Lower thrombosis incidences in non-Caucasians may be related to a lower prevalence of disorders like [[Factor V Leiden]] or [[Thrombin#Prothrombin 20210a mutation|Prothrombin 20210A mutation]].<ref name="pmid9109469">{{cite journal| author=Ridker PM, Miletich JP, Hennekens CH, Buring JE| title=Ethnic distribution of factor V Leiden in 4047 men and women. Implications for venous thromboembolism screening. | journal=JAMA | year= 1997 | volume= 277 | issue= 16 | pages= 1305-7 | pmid=9109469 | doi= | pmc= | url= }} </ref><ref name="pmid9415695">{{cite journal| author=Gregg JP, Yamane AJ, Grody WW| title=Prevalence of the factor V-Leiden mutation in four distinct American ethnic populations. | journal=Am J Med Genet | year= 1997 | volume= 73 | issue= 3 | pages= 334-6 | pmid=9415695 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9415695  }} </ref>
*More than 25,000 people die in England from venous thromboembolism developed in hospital. This is more than the total number of deaths attributable to [[breast cancer]], [[AIDS]], and road traffic accidents, when combined together.


===Hospitalization for VTE===
===Percent Distribution of VTE by Subtypes===
* During 2007–2009, an estimated annual average of 547,596 hospitalizations had a diagnosis of VTE for adults aged ≥18 years. Estimates for DVT and PE diagnoses were not mutually exclusive. An estimated annual average of 348,558 adult hospitalizations had a diagnosis of DVT, and 277,549 adult hospitalizations had a diagnosis of PE. An estimated annual average of 78,511 adult hospitalizations (14% of overall VTE hospitalizations) had diagnoses of both DVT and PE.<ref name=CDC2> [http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6122a1.htm?s_cid=mm6122a1_w ] Hussain R. Yusuf, MD, James Tsai, MD, Hani K. Atrash, MD, Sheree Boulet, DrPH, Scott D. Grosse, PhD, Div of Blood Disorders, National Center on Birth Defects and Developmental Disabilities, CDC. Venous Thromboembolism in Adult Hospitalizations — United States, 2007–2009</ref>
* As depicted by the figure below, the majority of [[VTE]] events is [[asymptomatic]]; while some cases present with [[fatal]] [[PE]].


* The estimated average annual number of hospitalizations with VTE was successively greater among older age groups: 54,034 for persons aged 18–39 years; 143,354 for persons aged 40–59 years; and 350,208 for persons aged ≥60 years. The estimated average annual number of hospitalizations with VTE was comparable for men (250,973) and women (296,623).<ref name=CDC2> [http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6122a1.htm?s_cid=mm6122a1_w ] Hussain R. Yusuf, MD, James Tsai, MD, Hani K. Atrash, MD, Sheree Boulet, DrPH, Scott D. Grosse, PhD, Div of Blood Disorders, National Center on Birth Defects and Developmental Disabilities, CDC. Venous Thromboembolism in Adult Hospitalizations — United States, 2007–2009</ref>  Shown below is an image depicting the estimated average annual number of hospitalization with a diagnosis of DVT, PE, or VTE by age and sex.
[[File:Challenge of Assessing VTE.JPG|300x400px]]
 
[[File:Estimated average annual number of hospitalization VTE.gif]]
 
* The average annual rates of hospitalizations with a discharge diagnosis of DVT, PE, or VTE among adults were 152, 121, and 239 per 100,000 population, respectively. For [[VTE]], the average annual rates were 60 per 100,000 population aged 18–39 years, 143 for persons aged 40–49 years, 200 for persons aged 50–59 years, 391 for persons aged 60–69 years, 727 for persons aged 70–79 years, and 1,134 for persons aged ≥80 years. The rates of hospitalization were similar for men and women, and the point estimates increased for both sexes by age.<ref name=CDC2> [http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6122a1.htm?s_cid=mm6122a1_w ] Hussain R. Yusuf, MD, James Tsai, MD, Hani K. Atrash, MD, Sheree Boulet, DrPH, Scott D. Grosse, PhD, Div of Blood Disorders, National Center on Birth Defects and Developmental Disabilities, CDC. Venous Thromboembolism in Adult Hospitalizations — United States, 2007–2009</ref>
 
* On average, 28,726 hospitalized adults with a VTE diagnosis died each year. Of these patients, an average of 13,164 had a [[DVT]] diagnosis and 19,297 had a PE diagnosis; 3,735 had both DVT and PE diagnoses.<ref name=CDC2> [http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6122a1.htm?s_cid=mm6122a1_w ] Hussain R. Yusuf, MD, James Tsai, MD, Hani K. Atrash, MD, Sheree Boulet, DrPH, Scott D. Grosse, PhD, Div of Blood Disorders, National Center on Birth Defects and Developmental Disabilities, CDC. Venous Thromboembolism in Adult Hospitalizations — United States, 2007–2009</ref>
 
===Recurrence of VTE===
* One-third (about 33%) of people with VTE will have a recurrence within 10 years.<ref>[http://www.cdc.gov/ncbddd/dvt/data.html CDC- Deep Vein Thrombosis (DVT) / Pulmonary Embolism (PE) — Blood Clot Forming in a Vein]</ref><ref name="pmid20331949">{{cite journal| author=Beckman MG, Hooper WC, Critchley SE, Ortel TL| title=Venous thromboembolism: a public health concern. | journal=Am J Prev Med | year= 2010 | volume= 38 | issue= 4 Suppl | pages= S495-501 | pmid=20331949 | doi=10.1016/j.amepre.2009.12.017 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20331949  }} </ref>
 
* The risk of recurrence of [[VTE]] in patients diagnosed with first-time [[VTE]] is estimated to be around 7-8 percent per year during an average follow up period of 2.2 years of subsequent observation of 265 patients.<ref name="pmid15210384">{{cite journal |author=Cushman M, Tsai AW, White RH, ''et al.''|title=Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology |journal=Am. J. Med.|volume=117 |issue=1 |pages=19–25 |year=2004 |month=July |pmid=15210384 |doi=10.1016/j.amjmed.2004.01.018 |url=}}</ref>
 
* Among patients with a first episode of VTE, the risk of recurrence of VTE is particularly elevated in the first 6 to 12 months following the first episode of VTE.  The risk of recurrent VTE remains up to 10 years, with a estimated cumulative incidence of first overall VTE recurrence of 30 %.  Predictors for recurrence of [[VTE]] include [[malignancy]], neurological diseases, and [[paresis]].<ref name="pmid10737275">{{cite journal |author=Heit JA, Mohr DN, Silverstein MD, Petterson TM, O'Fallon WM, Melton LJ |title=Predictors of recurrence after deep vein thrombosis and pulmonary embolism: a population-based cohort study |journal=Arch. Intern. Med. |volume=160 |issue=6 |pages=761–8 |year=2000 |month=March |pmid=10737275 |doi= |url=}}</ref>
 
* In recent years, the increase in [[thrombosis]] incidence may be related to improved diagnostic modalities and increased awareness by clinicians.<ref name="pmid12814979">{{cite journal |author=White RH |title=The epidemiology of venous thromboembolism |journal=Circulation |volume=107 |issue=23 Suppl 1 |pages=I4–8 |year=2003|month=June |pmid=12814979 |doi=10.1161/01.CIR.0000078468.11849.66 |url=}}</ref>


===Mortality===
* The percentages of the different subtypes of PE are:
* Estimates suggest that 60,000-100,000 Americans die of VTE, 10 to 30% of which will die within one month of diagnosis.<ref>[http://www.cdc.gov/ncbddd/dvt/data.html CDC- Deep Vein Thrombosis (DVT) / Pulmonary Embolism (PE) — Blood Clot Forming in a Vein]</ref><ref name="pmid20331949">{{cite journal| author=Beckman MG, Hooper WC, Critchley SE, Ortel TL| title=Venous thromboembolism: a public health concern. | journal=Am J Prev Med | year= 2010 | volume= 38 | issue= 4 Suppl | pages= S495-501 | pmid=20331949 | doi=10.1016/j.amepre.2009.12.017 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20331949  }} </ref>
** Massive PE: 5-10%
 
** Submassive PE: 20-25%
* An analysis of multiple-cause mortality files compiled by the National Center for Health Statistics from 1979 to 1998 reported that out of 42,932,973 deaths that occurred, almost 600,000 patients (approximately 1.5 percent) had been diagnosed with PE. PE might have caused the death of 200,000 of those patients.<ref name="pmid12885687">{{cite journal| author=Horlander KT, Mannino DM, Leeper KV| title=Pulmonary embolism mortality in the United States, 1979-1998: an analysis using multiple-cause mortality data. | journal=Arch Intern Med | year= 2003 |volume= 163 | issue= 14 | pages= 1711-7 | pmid=12885687 | doi=10.1001/archinte.163.14.1711 | pmc= |url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12885687  }}</ref>
** Low-risk PE: ~70%


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}


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Latest revision as of 13:47, 11 October 2017



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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] The APEX Trial Investigators; Associate Editor(s)-in-Chief: Rim Halaby, M.D. [2]

Overview

The precise number of people affected by venous thromboembolism(VTE), that is either deep vein thrombosis, pulmonary embolism (PE), or both, is unknown, but estimates range from 300,000 to 600,000 (1 to 2 per 1,000, and in those over 80 years of age, as high as 1 in 100) each year in the United States. Approximately 5 to 8% of the U.S. population has one of several genetic risk factors, also known as inherited thrombophilias in which a genetic defect can be identified that increases the risk for thrombosis.[1][2]

Epidemiology and Demographics

Incidence

  • In the United States, the annual incidence of VTE is estimated to be approximately 100 per 100,000 persons.[3]

Age

The incidence of VTE increases with age, ranging from < 5 cases per 100,000 people in childhood to 500 cases per 100,000 people in the elderly.[3] Subjects who are more than 65 years of age are at three times higher risk for VTE compared to those who are 45-54 years old.[4]

Gender

Studies about differences in the incidence of VTE by gender have mixed results.[5][6][4][7] In addition, the risk for VTE was reported to consistently increase with age across both genders.[4]

Race

  • There is a significant difference in the incidence of VTE as it relates to race. African Americans characteristically have the highest incidence of VTE and Caucasians rank as the second highest incidence of VTE.[3]
  • Lower thrombosis incidences in non-Caucasians may be related to a lower prevalence of disorders like Factor V Leiden or Prothrombin 20210A mutation.[8][9]

Percent Distribution of VTE by Subtypes

  • As depicted by the figure below, the majority of VTE events is asymptomatic; while some cases present with fatal PE.

  • The percentages of the different subtypes of PE are:
    • Massive PE: 5-10%
    • Submassive PE: 20-25%
    • Low-risk PE: ~70%

References

  1. 1.0 1.1 CDC- Deep Vein Thrombosis (DVT) / Pulmonary Embolism (PE) — Blood Clot Forming in a Vein
  2. 2.0 2.1 Beckman MG, Hooper WC, Critchley SE, Ortel TL (2010). "Venous thromboembolism: a public health concern". Am J Prev Med. 38 (4 Suppl): S495–501. doi:10.1016/j.amepre.2009.12.017. PMID 20331949.
  3. 3.0 3.1 3.2 White RH (2003). "The epidemiology of venous thromboembolism". Circulation. 107 (23 Suppl 1): I4–8. doi:10.1161/01.CIR.0000078468.11849.66. PMID 12814979. Unknown parameter |month= ignored (help)
  4. 4.0 4.1 4.2 Cushman M, Tsai AW, White RH, Heckbert SR, Rosamond WD, Enright P; et al. (2004). "Deep vein thrombosis and pulmonary embolism in two cohorts: the longitudinal investigation of thromboembolism etiology". Am J Med. 117 (1): 19–25. doi:10.1016/j.amjmed.2004.01.018. PMID 15210384.
  5. Silverstein MD, Heit JA, Mohr DN, Petterson TM, O'Fallon WM, Melton LJ (1998). "Trends in the incidence of deep vein thrombosis and pulmonary embolism: a 25-year population-based study". Arch. Intern. Med. 158 (6): 585–93. PMID 9521222. Unknown parameter |month= ignored (help)
  6. Kniffin WD, Baron JA, Barrett J, Birkmeyer JD, Anderson FA (1994). "The epidemiology of diagnosed pulmonary embolism and deep venous thrombosis in the elderly". Arch. Intern. Med. 154 (8): 861–6. PMID 8154949. Unknown parameter |month= ignored (help)
  7. "Venous Thromboembolism in Adult Hospitalizations — United States, 2007–2009". Retrieved 2012-10-06.
  8. Ridker PM, Miletich JP, Hennekens CH, Buring JE (1997). "Ethnic distribution of factor V Leiden in 4047 men and women. Implications for venous thromboembolism screening". JAMA. 277 (16): 1305–7. PMID 9109469.
  9. Gregg JP, Yamane AJ, Grody WW (1997). "Prevalence of the factor V-Leiden mutation in four distinct American ethnic populations". Am J Med Genet. 73 (3): 334–6. PMID 9415695.

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