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Garmin Connect
Garmin Connect is the web platform and mobile app that Garmin fitness and outdoor devices sync with, tracking health metrics, training plans, and activities, free with an optional premium tier.
Garmin Forerunner
Garmin Forerunner: Garmin's GPS running smartwatch line since 2003, starting with the Forerunner 201, the world's first GPS running watch; current flagships are the Forerunner 570 and 970 (May 2025).
Garre's sclerosing osteomyelitis
Garre's sclerosing osteomyelitis (periostitis ossificans, proliferative periostitis) is a rare nonsuppurative chronic osteomyelitis of children and young adults, causing onion-skin periosteal bone, cortical thickening, negative cultures, and mainly symptomatic treatment.
Garsorasib (D-1553)
Garsorasib (D-1553, brand AnFangning, 格索雷塞) is InventisBio's oral covalent KRAS G12C inhibitor, approved in China in November 2024 for previously treated KRAS G12C-mutated advanced NSCLC; phase 2 ORR 52.0%, licensed to Chia Tai Tianqing.
Garth Fisher
Garth Fisher, Donald Garth Fisher Jr., is an American plastic surgeon in Beverly Hills. He is board certified and served as the first surgeon chosen for Extreme Makeover.
Gary Robert Fleisher
Gary Robert Fleisher (born 1951) is an American pediatric emergency medicine physician who served as Physician-in-Chief at Boston Children's Hospital and helped found the field academically.
Gary S. Kaplan
Gary S. Kaplan is an American physician-executive who was chairman and CEO of Virginia Mason Health System in Seattle from 2000 to 2020, known for the Virginia Mason Production System adapted from Toyota's methods.
GARY study
GARY (German Aortic Valve Registry, Deutsches Aortenklappenregister) is Germany's nationwide all-comers registry of aortic valve therapy, founded July 2010 by DGK and DGTHG, enrolling 180,000 patients, comparing SAVR and TAVI outcomes including higher matched 5-year mortality after TAVI.
Gas gangrene
Gas gangrene, or clostridial myonecrosis, is a rapidly fatal muscle infection caused by toxin-producing Clostridium, chiefly C. perfringens, treated by urgent debridement plus penicillin and clindamycin.
Gas Scavengers
Gas scavengers (anesthetic gas scavenging systems, AGSS) capture waste anesthetic gases from anesthesia circuits and ventilators. Active vacuum and passive charcoal designs cut room concentrations about 71%, protecting staff from N2O and halogenated agents.
Gasserian ganglion block
A Gasserian ganglion block is a percutaneous injection of anesthetic or neurolytic agents into the trigeminal ganglion through the foramen ovale, most often to relieve trigeminal neuralgia.
Gastrectomy
Gastrectomy is the surgical removal of all or part of the stomach, most often serving as curative treatment for gastric adenocarcinoma, performed through various methods.
Gastric acid
Gastric acid, or stomach acid, is the hydrochloric acid secreted by parietal cells of the stomach lining, keeping stomach pH near 1.5 to digest protein and kill microbes.
Gastric Acidity Determination
Gastric acidity determination, also called gastric analysis or stomach acid test, measures free and total acid in stomach contents via tube aspiration and titration or telemetric pH capsules, quantifying basal and maximal acid output in mEq/hr.
Gastric adenocarcinoma and proximal polyposis of the stomach
GAPPS, gastric adenocarcinoma and proximal polyposis of the stomach, is a rare autosomal dominant hereditary gastric cancer syndrome caused by APC promoter 1B point mutations, causing hundreds of fundic gland polyps in the proximal stomach with 12-25% gastric cancer risk and no colorectal polyposis.
Gastric antral vascular ectasia
Gastric antral vascular ectasia (GAVE), or watermelon stomach, is a rare antral vascular malformation causing iron-deficiency anemia and GI bleeding, treated endoscopically with argon plasma coagulation, band ligation, or radiofrequency ablation.
Gastric Balloon
Gastric balloon (intragastric balloon, IGB): temporary space-occupying stomach device for obesity, inducing satiety by delayed gastric emptying. Includes Garren-Edwards bubble history, Orbera, Obalon, Elipse devices, efficacy and FDA safety alerts.
Gastric bypass surgery
Gastric bypass surgery, chiefly the Roux-en-Y gastric bypass (RYGB), is a bariatric operation creating a small stomach pouch joined to the small intestine; introduced by Edward Mason in the 1960s, it yields about 31.5% body-weight loss at 3 years and diabetes remission, distinct from sleeve gastrectomy.
Gastric diverticulum
Gastric diverticulum (stomach diverticulum) is a rare outpouching of the gastric wall, usually congenital, in the posterior fundus. Mostly asymptomatic and incidental; symptomatic GD is a diagnosis of exclusion, treated with PPIs or laparoscopic resection.
Gastric electrical stimulation
Gastric electrical stimulation is an implanted treatment delivering electrical pulses to the stomach wall to reduce nausea and vomiting in drug-refractory gastroparesis, FDA-approved since 2000.
Gastric Emptying
Gastric emptying, the evacuation of food from the stomach into the duodenum, normally takes about 4 hours for 90% of a meal. Measured by scintigraphy (reference standard), 13C breath test, or wireless motility capsule to diagnose gastroparesis or dumping syndrome.
Gastric erosion
Gastric erosion (erosion of stomach, ICD-11 DA60.0) is a superficial mucosal breach not penetrating the muscularis mucosae, usually caused by NSAIDs, aspirin, alcohol, or H. pylori, diagnosed at endoscopy and treated with acid suppression.
Gastric Hypothermia
Gastric hypothermia, or cold gastric lavage, lowers core body temperature by filling the stomach with chilled fluids; studied for heat stroke and GI bleeding, fast in dogs but slow and complication-prone in humans.
Gastric lavage
Gastric lavage, or stomach washout, is a gastrointestinal decontamination procedure for acute oral poisoning using a large-bore orogastric tube. AACT/EAPCCT guidelines say it should not be routine; efficacy falls sharply after 60 minutes.
Gastric linitis plastica
Gastric linitis plastica, also called leather-bottle stomach or Borrmann type 4 gastric cancer, is a diffuse infiltrative gastric adenocarcinoma with signet ring cells and fibrosis, notorious for false-negative superficial biopsies and poor survival.
Gastric lymph nodes
Gastric lymph nodes drain the stomach and are numbered as stations 1–16+ in the Japanese Classification of Gastric Carcinoma, defining D1/D2 lymphadenectomy levels and N staging for gastric cancer.
Gastric phlegmon
Gastric phlegmon, or phlegmonous gastritis (ICD-11 DA42.9), is a rare, rapidly progressive purulent bacterial infection of the stomach wall, usually Streptococcus, with high mortality treated by antibiotics and sometimes gastrectomy.
Gastric polyp
Gastric polyp (stomach polyp), ICD-11 DA44: mucosal or submucosal growth projecting into the stomach lumen, found in about 2% of people and 6% of endoscopies; fundic gland, hyperplastic, and adenomatous types differ in cancer risk.
Gastric ulcer
Gastric ulcer (stomach ulcer, ICD-11 DA60): an acid-and-pepsin breach of the stomach lining over 5 mm deep, mainly caused by Helicobacter pylori or NSAIDs; diagnosed by endoscopy with biopsy, treated with PPIs and eradication therapy.
Gastric varices
Gastric varices are dilated submucosal stomach veins acting as portosystemic collaterals in portal hypertension, classified by Sarin as GOV1, GOV2, IGV1, IGV2; treated with cyanoacrylate, BRTO, or TIPS.