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Hernia

Hernia
Diagram of an indirect inguinal hernia (view from the side)
SpecialtyGeneral surgery
SymptomsPain especially with coughing, bulging area[1]
ComplicationsBowel strangulation[1]
Usual onset< 1 year and > 50 years old (groin hernias)[2]
Risk factorsSmoking, chronic obstructive pulmonary disease, obesity, pregnancy, peritoneal dialysis, collagen vascular disease, connective tissue disease[1][2][3]
Diagnostic methodBased on symptoms, medical imaging[1]
TreatmentObservation, surgery[1]
Frequency18.5 million (2015)[4]
Deaths59,800 (2015)[5]

A hernia (pl.: hernias or herniae, from Latin, meaning 'rupture') is the abnormal exit of tissue or an organ, such as the bowel, through the wall of the cavity in which it normally resides.[1] The term is also used for the normal development of the intestinal tract, referring to the retraction of the intestine from the extra-embryonal navel coelom into the abdomen in the healthy embryo at about 7½ weeks.

Various types of hernias can occur,[6] most commonly involving the abdomen, and specifically the groin.[6] Groin hernias are most commonly inguinal hernias but may also be femoral hernias.[1] Other types of hernias include hiatus, incisional, and umbilical hernias.[6] Symptoms are present in about 66% of people with groin hernias.[1] This may include pain or discomfort in the lower abdomen, especially with coughing, exercise, or urinating or defecating.[1] Often, it gets worse throughout the day and improves when lying down.[1] A bulge may appear at the site of hernia, that becomes larger when bending down.[1]

Groin hernias occur more often on the right than left side.[1] The main concern is bowel strangulation, where the blood supply to part of the bowel is blocked.[1] This usually produces severe pain and tenderness in the area.[1] Hiatus, or hiatal hernias often result in heartburn but may also cause chest pain or pain while eating.[3]

Risk factors for the development of a hernia include smoking, chronic obstructive pulmonary disease, obesity, pregnancy, peritoneal dialysis, collagen vascular disease and previous open appendectomy, among others.[1][2][3] Predisposition to hernias is genetic[7] and occur more often in certain families.[8][9][10][1] Deleterious mutations causing predisposition to hernias seem to have dominant inheritance (especially for men). It is unclear if groin hernias are associated with heavy lifting.[1] Hernias can often be diagnosed based on signs and symptoms.[1] Occasionally, medical imaging is used to confirm the diagnosis or rule out other possible causes.[1] The diagnosis of hiatus hernias is often done by endoscopy.[3]

Groin hernias that do not cause symptoms in males do not need immediate surgical repair, a practice referred to as "watchful waiting".[1] However most men tend to eventually undergo groin hernia surgery due to the development of pain.[1] For women, however, repair is generally recommended due to the higher rate of femoral hernias, which have more complications.[1] If strangulation occurs, immediate surgery is required.[1] Repair may be done by open surgery, laparoscopic surgery, or robotic-assisted surgery.[1] Open surgery has the benefit of possibly being done under local anesthesia rather than general anesthesia.[1] Laparoscopic surgery generally has less pain following the procedure.[1] A hiatus hernia may be treated with lifestyle changes such as raising the head of the bed, weight loss and adjusting eating habits.[3] The medications H2 blockers or proton pump inhibitors may help.[3] If the symptoms do not improve with medications, a surgery known as laparoscopic Nissen fundoplication may be an option.[3]

Globally in 2019, there were 32.53 million prevalent cases of inguinal, femoral, and abdominal hernias, with a 95% uncertainty interval ranging from 27.71 to 37.79 million. Additionally, there were 13.02 million incident cases, with an uncertainty interval of 10.68 to 15.49 million. These figures reflect a 36.00% increase in prevalent cases and a 63.67% increase in incident cases compared to the numbers reported in 1990. [11]About 27% of males and 3% of females develop a groin hernia at some point in their lives.[1] Inguinal, femoral and abdominal hernias were present in 18.5 million people and resulted in 59,800 deaths in 2015.[4][5] Groin hernias occur most often before the age of 1 and after the age of 50.[2] It is not known how commonly hiatus hernias occur, with estimates in North America varying from 10% to 80%.[3] The first known description of a hernia dates back to at least 1550 BC, in the Ebers Papyrus from Egypt.[12]

  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa Fitzgibbons RJ, Forse RA (February 2015). "Clinical practice. Groin hernias in adults". The New England Journal of Medicine. 372 (8): 756–63. doi:10.1056/NEJMcp1404068. PMID 25693015.
  2. ^ a b c d Domino FJ (2014). The 5-minute clinical consult 2014 (22nd ed.). Philadelphia, Pa.: Wolters Kluwer Health/Lippincott Williams & Wilkins. p. 562. ISBN 9781451188509. Archived from the original on 2017-08-22.
  3. ^ a b c d e f g h Roman S, Kahrilas PJ (October 2014). "The diagnosis and management of hiatus hernia". BMJ. 349: g6154. doi:10.1136/bmj.g6154. PMID 25341679. S2CID 7141090.
  4. ^ a b Vos T, Allen C, Arora M, Barber RM, Bhutta ZA, Brown A, et al. (GBD 2015 Disease and Injury Incidence and Prevalence Collaborators) (October 2016). "Global, regional, and national incidence, prevalence, and years lived with disability for 310 diseases and injuries, 1990-2015: a systematic analysis for the Global Burden of Disease Study 2015". Lancet. 388 (10053): 1545–1602. doi:10.1016/S0140-6736(16)31678-6. PMC 5055577. PMID 27733282.
  5. ^ a b Wang H, Naghavi M, Allen C, Barber RM, Bhutta ZA, Carter A, et al. (GBD 2015 Mortality and Causes of Death Collaborators) (October 2016). "Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980-2015: a systematic analysis for the Global Burden of Disease Study 2015". Lancet. 388 (10053): 1459–1544. doi:10.1016/s0140-6736(16)31012-1. PMC 5388903. PMID 27733281.
  6. ^ a b c "Hernia". MedlinePlus. U.S. National Library of Medicine. 9 August 2014. Archived from the original on 16 March 2015. Retrieved 12 March 2015.
  7. ^ Öberg S, Andresen K, Rosenberg J (2017). "Etiology of Inguinal Hernias: A Comprehensive Review". Frontiers in Surgery. 4: 52. doi:10.3389/fsurg.2017.00052. PMC 5614933. PMID 29018803.
  8. ^ Mihailov E, Nikopensius T, Reigo A, Nikkolo C, Kals M, Aruaas K, et al. (February 2017). "Whole-exome sequencing identifies a potential TTN mutation in a multiplex family with inguinal hernia". Hernia. 21 (1): 95–100. doi:10.1007/s10029-016-1491-9. PMC 5281683. PMID 27115767.
  9. ^ Sezer S, Şimşek N, Celik HT, Erden G, Ozturk G, Düzgün AP, et al. (August 2014). "Association of collagen type I alpha 1 gene polymorphism with inguinal hernia". Hernia. 18 (4): 507–12. doi:10.1007/s10029-013-1147-y. PMID 23925543. S2CID 22999363.
  10. ^ Gong Y, Shao C, Sun Q, Chen B, Jiang Y, Guo C, et al. (March 1994). "Genetic study of indirect inguinal hernia". Journal of Medical Genetics. 31 (3): 187–92. doi:10.1136/jmg.31.3.187. PMC 1049739. PMID 8014965.
  11. ^ Ma, Q.; Jing, W.; Liu, X.; Liu, J.; Liu, M.; Chen, J. (24 March 2023). "Trends of inguinal, femoral, and abdominal hernia from 1990 to 2019". International Journal of Surgery (London, England). 109 (3): 333–342. doi:10.1097/JS9.0000000000000217. PMC 10389329. PMID 37093073.
  12. ^ Nigam VK (2009). Essentials of Abdominal Wall Hernias. I. K. International Pvt Ltd. p. 6. ISBN 9788189866938. Archived from the original on 2017-09-08.

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