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Diarrhea is an uncommon gastrointestinal symptom in patients with COVID-19, but in may be the presenting symptom in few patients. The frequency of occurrence of diarrhea varies between 1%-35%. <ref name="pmid32253163">{{cite journal| author=Li XY, Dai WJ, Wu SN, Yang XZ, Wang HG| title=The occurrence of diarrhea in COVID-19 patients. | journal=Clin Res Hepatol Gastroenterol | year= 2020 | volume=  | issue=  | pages=  | pmid=32253163 | doi=10.1016/j.clinre.2020.03.017 | pmc=7270575 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32253163  }} </ref>It varies widely between different studies probably due to the different criteria used to define diarrhea.
Diarrhea is an uncommon gastrointestinal symptom in patients with COVID-19, but in may be the presenting symptom in few patients. The frequency of occurrence of diarrhea varies between 1%-35%. <ref name="pmid32253163">{{cite journal| author=Li XY, Dai WJ, Wu SN, Yang XZ, Wang HG| title=The occurrence of diarrhea in COVID-19 patients. | journal=Clin Res Hepatol Gastroenterol | year= 2020 | volume=  | issue=  | pages=  | pmid=32253163 | doi=10.1016/j.clinre.2020.03.017 | pmc=7270575 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32253163  }} </ref>It varies widely between different studies probably due to the different criteria used to define diarrhea.
*SARS-CoV-2 uses the ACE2 receptors for cell entry. These receptors are presently abundantly not only in the lungs but also in the enterocytes of the small intestinal.
===Pathophysiology===
* Entry of the virus causes disruption of the enterocytes and may lead to inflammation.
*SARS-CoV-2 uses the ACE2 receptors for cell entry. These receptors are presently abundantly not only in the lungs but also in the enterocytes of the small intestinal.<ref name="pmid32102928">{{cite journal| author=Liang W, Feng Z, Rao S, Xiao C, Xue X, Lin Z | display-authors=etal| title=Diarrhoea may be underestimated: a missing link in 2019 novel coronavirus. | journal=Gut | year= 2020 | volume= 69 | issue= 6 | pages= 1141-1143 | pmid=32102928 | doi=10.1136/gutjnl-2020-320832 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32102928  }} </ref> Other sites of expression of the receptors in the gastrointestinal tract are-the upper esophagus, liver, and colon. <ref name="pmid32278065">{{cite journal| author=D'Amico F, Baumgart DC, Danese S, Peyrin-Biroulet L| title=Diarrhea During COVID-19 Infection: Pathogenesis, Epidemiology, Prevention, and Management. | journal=Clin Gastroenterol Hepatol | year= 2020 | volume=  | issue=  | pages=  | pmid=32278065 | doi=10.1016/j.cgh.2020.04.001 | pmc=7141637 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32278065  }} </ref>
*Entry of the virus causes disruption of the enterocytes and may lead to inflammation and alteration of intestinal permeability.
 
===Clinical Features of Diarrhea caused by SARS-CoV-2===
* According to Jin et al<ref name="pmid32213556">{{cite journal| author=Jin X, Lian JS, Hu JH, Gao J, Zheng L, Zhang YM | display-authors=etal| title=Epidemiological, clinical and virological characteristics of 74 cases of coronavirus-infected disease 2019 (COVID-19) with gastrointestinal symptoms. | journal=Gut | year= 2020 | volume= 69 | issue= 6 | pages= 1002-1009 | pmid=32213556 | doi=10.1136/gutjnl-2020-320926 | pmc=7133387 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32213556  }} </ref>, the definition of diarrhea was the passing of loose stools >3 times per day.
* According to this study, 8.1% had diarrhea at onset and the symptoms lasted for approximately 4 days.
* The duration of diarrhea ranged from 2-4 days with 3-8 bowel movements per day, according to various studies. <ref name="pmid32139552">{{cite journal| author=Song Y, Liu P, Shi XL, Chu YL, Zhang J, Xia J | display-authors=etal| title=SARS-CoV-2 induced diarrhoea as onset symptom in patient with COVID-19. | journal=Gut | year= 2020 | volume= 69 | issue= 6 | pages= 1143-1144 | pmid=32139552 | doi=10.1136/gutjnl-2020-320891 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32139552  }} </ref><ref name="pmid31986261">{{cite journal| author=Chan JF, Yuan S, Kok KH, To KK, Chu H, Yang J | display-authors=etal| title=A familial cluster of pneumonia associated with the 2019 novel coronavirus indicating person-to-person transmission: a study of a family cluster. | journal=Lancet | year= 2020 | volume= 395 | issue= 10223 | pages= 514-523 | pmid=31986261 | doi=10.1016/S0140-6736(20)30154-9 | pmc=7159286 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=31986261  }} </ref>

Revision as of 07:54, 19 June 2020

Diarrhea is an uncommon gastrointestinal symptom in patients with COVID-19, but in may be the presenting symptom in few patients. The frequency of occurrence of diarrhea varies between 1%-35%. [1]It varies widely between different studies probably due to the different criteria used to define diarrhea.

Pathophysiology

  • SARS-CoV-2 uses the ACE2 receptors for cell entry. These receptors are presently abundantly not only in the lungs but also in the enterocytes of the small intestinal.[2] Other sites of expression of the receptors in the gastrointestinal tract are-the upper esophagus, liver, and colon. [3]
  • Entry of the virus causes disruption of the enterocytes and may lead to inflammation and alteration of intestinal permeability.

Clinical Features of Diarrhea caused by SARS-CoV-2

  • According to Jin et al[4], the definition of diarrhea was the passing of loose stools >3 times per day.
  • According to this study, 8.1% had diarrhea at onset and the symptoms lasted for approximately 4 days.
  • The duration of diarrhea ranged from 2-4 days with 3-8 bowel movements per day, according to various studies. [5][6]
  1. ↑ Li XY, Dai WJ, Wu SN, Yang XZ, Wang HG (2020). "The occurrence of diarrhea in COVID-19 patients". Clin Res Hepatol Gastroenterol. doi:10.1016/j.clinre.2020.03.017. PMC 7270575 Check |pmc= value (help). PMID 32253163 Check |pmid= value (help).
  2. ↑ Liang W, Feng Z, Rao S, Xiao C, Xue X, Lin Z; et al. (2020). "Diarrhoea may be underestimated: a missing link in 2019 novel coronavirus". Gut. 69 (6): 1141–1143. doi:10.1136/gutjnl-2020-320832. PMID 32102928 Check |pmid= value (help).
  3. ↑ D'Amico F, Baumgart DC, Danese S, Peyrin-Biroulet L (2020). "Diarrhea During COVID-19 Infection: Pathogenesis, Epidemiology, Prevention, and Management". Clin Gastroenterol Hepatol. doi:10.1016/j.cgh.2020.04.001. PMC 7141637 Check |pmc= value (help). PMID 32278065 Check |pmid= value (help).
  4. ↑ Jin X, Lian JS, Hu JH, Gao J, Zheng L, Zhang YM; et al. (2020). "Epidemiological, clinical and virological characteristics of 74 cases of coronavirus-infected disease 2019 (COVID-19) with gastrointestinal symptoms". Gut. 69 (6): 1002–1009. doi:10.1136/gutjnl-2020-320926. PMC 7133387 Check |pmc= value (help). PMID 32213556 Check |pmid= value (help).
  5. ↑ Song Y, Liu P, Shi XL, Chu YL, Zhang J, Xia J; et al. (2020). "SARS-CoV-2 induced diarrhoea as onset symptom in patient with COVID-19". Gut. 69 (6): 1143–1144. doi:10.1136/gutjnl-2020-320891. PMID 32139552 Check |pmid= value (help).
  6. ↑ Chan JF, Yuan S, Kok KH, To KK, Chu H, Yang J; et al. (2020). "A familial cluster of pneumonia associated with the 2019 novel coronavirus indicating person-to-person transmission: a study of a family cluster". Lancet. 395 (10223): 514–523. doi:10.1016/S0140-6736(20)30154-9. PMC 7159286 Check |pmc= value (help). PMID 31986261.
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