Summary
Definition
HS is an inherited abnormality of the red blood cell, caused by defects in structural membrane proteins. Globally, it is the most common red blood cell membrane disorder.[1]
The condition is dominantly inherited in 75% of people.[2] The severity of the disorder is related to the type and amount of membrane disruption, which is genetically determined. The abnormal cells are spherical. They are removed by the spleen, resulting in a reduced red-cell life span that deviates from the norm of 120 days by a variable degree. In severe cases, red-cell life span may be only 10 days. The severity of hemolysis varies between different individuals and can be exacerbated by infection. HS is associated with splenomegaly (commonly), anemia (variably) with an increased reticulocyte count, and jaundice (occasionally). [Figure caption and citation for the preceding image starts]: Blood smear of a patient with HS; spherocyte indicatedFrom the collection of Shelley Crary, University of Texas Southwestern Medical Center, TX; used with permission [Citation ends].
History and exam
Key diagnostic factors
- positive family history
- at risk demographic
- pallor
- jaundice
- splenomegaly
Other diagnostic factors
- fatigue
- hydrops fetalis or stillbirth
Risk factors
- family history of splenectomy, anemia, jaundice, or hereditary spherocytosis (HS)
- at risk demographic
Diagnostic tests
1st tests to order
- CBC
- reticulocyte count
- blood smear
- serum bilirubin
- serum aminotransferases
- direct antiglobulin test (DAT)
Tests to consider
- eosin-5-maleimide binding test
- acidified glycerol lysis test
- cryohemolysis test
- genetic analysis
- sodium dodecyl sulfate-polyacrylamide gel electrophoresis
Treatment algorithm
neonates (<28 days old)
infants (>28 days old), children, and adults: severe hereditary spherocytosis (HS)
infants (>28 days old), children, and adults: mild-to-moderate hereditary spherocytosis (HS)
Contributors
Authors
Shelley Crary, MD, MSCS
Associate Professor of Pediatrics
University of Arkansas for Medical Sciences
Little Rock
AR
გაფრთხილება:
SC is reimbursed for membership on a drug and safety monitoring board (Novartis) for a nonrelated drug.
მადლიერება
Dr Shelley Crary would like to gratefully acknowledge Dr Paula Bolton-Maggs, a previous contributor to this topic.
გაფრთხილება:
PB-M has received travel and accommodation payments to give a series of lectures on pediatric hematology, one of which was on HS. She also was an expert witness in a legal case concerning a child with HS. PB-M is an author of some references cited in this topic.
რეცენზენტები
Robert Schilling, MD
Professor of Medicine Emeritus
School of Medicine and Public Health
University of Wisconsin-Madison
Madison
WI
გაფრთხილება:
RS is an author of a number of references cited in this topic.
Peer reviewer acknowledgements
BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.
Disclosures
Peer reviewer affiliations and disclosures pertain to the time of the review.
წყაროები
ძირითადი სტატიები
Eber SW, Armbrust R, Schroter W. Variable clinical severity of hereditary spherocytosis: relation to erythrocytic spectrin concentration, osmotic fragility, and autohemolysis. J Pediatr. 1990 Sep;117(3):409-16. აბსტრაქტი
Bolton-Maggs PH, Langer JC, Iolascon A, et al; General Haematology Task Force of the British Committee for Standards in Haematology. Guidelines for the diagnosis and management of hereditary spherocytosis - 2011 update. Br J Haematol. 2012 Jan;156(1):37-49.სრული ტექსტი აბსტრაქტი
Perrotta S, Gallagher PG, Mohandas N. Hereditary spherocytosis. Lancet. 2008 Oct 18;372(9647):1411-26. აბსტრაქტი
King MJ, Garçon L, Hoyer JD, et al. ICSH guidelines for the laboratory diagnosis of nonimmune hereditary red cell membrane disorders. Int J Lab Hematol. 2015 Jun;37(3):304-25.სრული ტექსტი აბსტრაქტი
Iolascon A, Andolfo I, Barcellini W, et al. Recommendations regarding splenectomy in hereditary hemolytic anemias. Haematologica. 2017 Aug;102(8):1304-13.სრული ტექსტი აბსტრაქტი
Davies JM, Lewis MP, Wimperis J, et al. Review of guidelines for the prevention and treatment of infection in patients with an absent or dysfunctional spleen: prepared on behalf of the British Committee for Standards in Haematology by a working party of the Haemato-Oncology task force. Br J Haematol. 2011 Nov;155(3):308-17.სრული ტექსტი აბსტრაქტი
გამოყენებული სტატიები
ამ თემაში მოხსენიებული წყაროების სრული სია ხელმისაწვდომია მომხმარებლებისთვის, რომლებსაც აქვთ წვდომა BMJ Best Practice-ის ყველა ნაწილზე.
დიფერენციული დიაგნოზები
- Nonhemolytic anemia
- Other causes of hemolytic anemia
- Other causes of spherocytosis
მეტი დიფერენციული დიაგნოზებიგაიდლაინები
- Recommendations regarding splenectomy in hereditary hemolytic anemias
- ICSH guidelines for the laboratory diagnosis of non-immune hereditary red cell membrane disorders
მეტი გაიდლაინებიპაციენტის ბროშურები
Jaundice in newborn babies
Gallstones
მეტი პაციენტის ბროშურები
შედით სისტემაში ან გამოიწერეთ BMJ Best Practice
ამ მასალის გამოყენება ექვემდებარება ჩვენს განცხადებას