Life and health

Hysterectomy

Hysterectomy: surgical removal of the uterus, ending fertility and menstruation. Types include total, subtotal, and radical; routes are vaginal, abdominal, laparoscopic, robotic, and V-NOTES; fibroids are the leading indication.

Hysterolites

Hysterolites (Hysterolites hystericus) is an extinct Lower Devonian spiriferid brachiopod genus named by Schlotheim in 1820, family Hysterolitidae, recorded from Spain, Belgium, Germany, Uzbekistan, and Yukon.

Hysteropexy

Hysteropexy is a surgical procedure for uterine prolapse that suspends the uterus to ligaments or the sacrum, a uterus-sparing alternative to hysterectomy often chosen by women who want to keep the uterus.

Hysterosalpingography

Hysterosalpingography (HSG, uterosalpingography) is a fluoroscopic x-ray exam of the uterine cavity and fallopian tubes using injected contrast, mainly to assess tubal patency in infertility; distinguished from HyCoSy/HyFoSy ultrasound tests by its use of ionizing radiation.

Hysteroscopes

A hysteroscope is a thin, telescope-like instrument inserted through the vagina and cervix to view the inside of the uterus, diagnose abnormal bleeding, and remove polyps, fibroids, or adhesions.

Hysteroscopic myomectomy

Hysteroscopic myomectomy is a minimally invasive procedure that removes submucosal uterine fibroids through the cervix using a hysteroscope, relieving abnormal bleeding in 70 to 99% of cases.

Hysteroscopic resection

Hysteroscopic resection is a minimally invasive gynecological operation in which a hysteroscope views the uterine cavity and cuts away lesions such as polyps, submucosal fibroids, and uterine septa.

Hysteroscopy

Hysteroscopy (uterine endoscopy) examines the uterine cavity via a thin camera scope through the cervix, using CO2 or saline distension. First done by Pantaleoni in 1869; now largely office-based, diagnosing and treating polyps, fibroids, adhesions, and bleeding causes.

Hysterotomy

Hysterotomy is a surgical incision through the wall of the pregnant uterus, usually via the abdomen, to evacuate its contents, typically to end a pregnancy before fetal viability.

Oct 20, 2026

Hystrix

Hystrix (Linnaeus, 1758) is the genus of Old World crested porcupines, family Hystricidae, with 8 species including H. cristata, H. africaeaustralis, and H. indica; short-tailed, rattle-quilled, nocturnal herbivores of Africa and Asia.

Hystrix cristata

Hystrix cristata, the crested or North African crested porcupine (Linnaeus 1758), a large hystricid rodent of North Africa and the Sahel with a disjunct Italian population, Least Concern, range expanding north in Italy.

Hyung-Song Nam

Hyung-Song Nam is an American cell and vascular biologist at Memorial Sloan Kettering Cancer Center known for a 2010 method for expanding endothelial cells from human embryonic stem cells.

HYVITS trial

HYVITS trial: multicenter open-label RCT (NCT03380507) of hydrocortisone, vitamin C, and thiamine triple therapy in 106 Qatari ICU patients with septic shock; terminated early for funding, found no mortality or vasopressor benefit.

I M Murray-Lyon

Iain M. Murray-Lyon is a British physician and hepatology researcher who worked at King's College Hospital and later as consultant gastroenterologist at Charing Cross Hospital, London.

Oct 20, 2026

I-ACB trial

I-ACB trial (NCT07815730): Indian Asthma Care Bundle study by Ahmedabad University testing an India-specific post-discharge asthma care bundle against usual care in 260 adults, measuring readmission and ED visits at 30, 60, and 90 days.

I-CreI

I-CreI is a LAGLIDADG homing endonuclease from Chlamydomonas reinhardtii chloroplast 23S rRNA intron; a homodimer cutting a 22-bp pseudo-palindromic site with three metal ions, widely engineered for genome editing.

I-PADUA trial

I-PADUA (NCT03449797) is a randomized multicenter trial from University Hospital Padova testing whether intra-procedural rapid cortisol assay guidance raises bilaterally selective adrenal vein sampling success in primary aldosteronism.

i-PROTECT trial

i-PROTECT (Integrated Proactive Wireless Monitoring for Clinical Deterioration) trial: a stepped-wedge cluster randomized trial at King Abdulaziz Medical City, Riyadh, testing continuous wireless ward monitoring (Masimo Root, WARD algorithm) on mortality and cardiopulmonary failure; NCT06644599, 13,160 patients, started 2026.

i-RECORd study

i-RECORd (International REgistry of COnservative or Radical Treatment of Localized Kidney Tumors, NCT05363657) is a prospective observational registry led by Azienda Ospedaliero-Universitaria Careggi comparing partial nephrectomy, radical nephrectomy, ablation, active surveillance, and watchful waiting across 50 centers and about 10,000 patients.

Sep 20, 2026

I. Bernard Weinstein

I. Bernard Weinstein (1930–2008) was an American molecular biologist and oncologist at Columbia University who studied how tumor promoters act and originated the concept of oncogene addiction.

I. George Miller Jr.

I. George Miller Jr. is an American pediatric virologist at Yale known for Epstein-Barr virus research, including the first human virus shown to cause tumors in primates.

I. Glenn Cohen

I. Glenn Cohen is a Harvard Law School professor and legal scholar in health law and bioethics, elected to the National Academy of Medicine in 2024.

Sep 20, 2026

I. Herbert Scheinberg

I. Herbert Scheinberg was an American physician and researcher who defined the diagnosis and treatment of Wilson's disease, showing in 1952 that patients lack ceruloplasmin.

I. Lawrence Kerr

I. Lawrence Kerr was an American dentist who served as President of the American Dental Association and was elected to the National Academy of Medicine in 1985.

I. Michael Lerner

I. Michael Lerner (Isadore Michael Lerner) was an American population geneticist at the University of California, Berkeley, known for the concept of genetic homeostasis and for making poultry breeding a quantitative science.

I. Robert Lehman

I. Robert Lehman (Israel Robert Lehman) was an American biochemist who spent fifty years at Stanford studying DNA enzymes, co-discovering DNA polymerase I and characterizing DNA ligase.

I.L. Chaikoff

Israel Lyon Chaikoff (1902–1966) was a Canadian-born physiologist and biochemist, professor of physiology at UC Berkeley, who pioneered radioactive-isotope tracers and the Wolff–Chaikoff effect, the thyroid's temporary shutdown when iodide rises.

I'm OK – You're OK

I'm OK – You're OK (1969) is Thomas A. Harris's best-selling guide to Eric Berne's transactional analysis, presenting Parent-Adult-Child ego states and four life positions; it sold over 15 million copies and topped the New York Times non-fiction list in 1972.

I/An

I/An is a substrain of the I inbred laboratory mouse strain, originated by Strong in 1926, F143, pink-eyed fawn, carrying the sex-linked Phk phosphorylase kinase deficiency and prone to adenomatous stomach lesions.