Krvavitev iz prebavil: bruhanje krvi in ​​črno blato¶

Acute gastrointestinal (GI) bleeding is a medical emergency in which blood escapes from a ruptured blood vessel, ulcer, or tear anywhere along the digestive tract, from the esophagus and stomach (upper GI bleed) down to the small intestine, colon, and rectum (lower GI bleed). Unlike an external wound on an arm or leg, you cannot press your hands directly onto a bleeding stomach ulcer or ruptured esophageal varix, and the stomach and intestines can silently conceal 1,000 to 2,000 milliliters (2 to 4 pints) of blood before a single drop is vomited or passed in the toilet. Whether someone is vomiting bright red blood or dark "coffee-ground" material (hematemesis), passing sticky jet-black tarry stools (melena), or passing large amounts of maroon or bright red blood from the rectum (hematochezia), your immediate priorities are calling emergency medical services, rolling a vomiting person onto their side so they do not drown in aspirated blood, keeping them strictly nothing by mouth (NPO), and laying them down to prevent fatal hypovolemic shock.

Naredi to zdaj¶

1. Call your local emergency number immediately if the person is vomiting blood, passing black tarry stools with dizziness, or bleeding heavily from the rectum. Dial 911 in the United States and Canada, 112 across the European Union, 999 in the United Kingdom, or see all številke za klic v sili. Tell the dispatcher whether the patient is vomiting bright red blood, has liver cirrhosis, or takes blood thinners (anticoagulants), as this triggers advanced paramedic airway and blood-transfusion protocols.
2. Protect the airway by placing any vomiting or drowsy person on their side (Recovery Position). If the person is actively vomiting blood (hematemesis), retching, or becoming drowsy, confused, or unconscious, immediately roll them onto their left side into the lateral recovery position and tilt their chin slightly downward so blood and clots drain freely out of the corner of their mouth into a basin or towel. Use a finger wrapped in a cloth to sweep any large rubbery blood clots out of the front of their mouth if they are gagging.
3. Osebo, ki ne bruha in ima vrtoglavico, položite na hrbet, da preprečite omedlevico in šok. Ne ne dovolite, da bi oseba s sumom na krvavitev iz prebavil hodila po stopnicah, stala pri umivalniku ali sedela pokončno na straniščni školjki, če ima omotico. Če stojite pokonci, ko je količina krvi izčrpana, krvni tlak močno pade (ortostatska sinkopa), kar povzroči nenaden kolaps, hude poškodbe glave na kopalniških ploščicah in srčni zastoj. Če so popolnoma budni in ni čutijo slabosti ali bruhanja, jih položite na tla ali posteljo.
4. Dajajte strogo NIČESAR peroralno (brez vode, brez mleka, brez antacidov in nikoli aspirina ali nesteroidnih protivnetnih zdravil). Ne dovolite osebi piti vode, mleka ali zeliščnih čajev in ne dajajte peroralnih antacidov ali bizmuta. Najpomembneje je, da nikoli ne dajajte aspirina, ibuprofena (Advil, Motrin), naproksena (Aleve), diklofenaka ali ketorolaka za bolečine v želodcu: ta nesteroidna protivnetna zdravila (NSAID) odstranijo zaščitno pregrado sluzi v želodcu in paralizirajo trombocite ter spremenijo počasno krvavitev iz razjede v hudourniško arterijsko krvavitev.
5. Ogrejte osebo z odejami, da preprečite strjevanje krvi. Pacienta pokrijte s toplo odejo ali plaščem in pod njega položite odejo, če leži na mrzlih tleh kopalnice. Ko bolnika, ki krvavi, zebe (hipotermija pod \(35^\circ\text{C}\) ali \(95^\circ\text{F}\)), encimska kaskada strjevanja krvi in ​​krvne ploščice prenehajo pravilno delovati (del "smrtonosne triade travme in krvavitve"), kar povzroči nenadzorovano krvavitev.
6. Shranite vzorec ali fotografirajte bruhanje ali blato s pametnim telefonom in zberite vse stekleničke z zdravili. Preden splaknete stranišče ali odvržete umivalnik z izbljuvkom, posnemite jasno fotografijo s telefonom ali shranite posodo, da jo pokažete reševalcem (zdravniki morajo videti natančno barvo, strdke in ocenjeno prostornino). Zberite vse stekleničke na recept in brez recepta v hiši, posebej preverite, ali obstajajo sredstva za redčenje krvi (varfarin, apiksaban, rivaroksaban, dabigatran, klopidogrel), aspirin/NSAID, steroidi in dodatki železa ali bizmuta.

Diagram poteka triaže krvavitev iz prebavil in prve pomoči¶

Uporabite to drevo kliničnih odločitev, da ugotovite vir in resnost krvavitve iz prebavnega trakta ter takoj ukrepate, da rešite življenje.

flowchart TD
    Start["Domnevna krvavitev iz prebavil (GI):<br/>Kri v bruhanju, črno katranasto blato ali rdeča rektalna krvavitev"] --> AirwayShock{"Takoj preverite dihalne poti in znake šoka:<br/>- Bruhanje svetlo rdeče krvi ali kavne usedline?<br/>- Omotičnost, omedlevica, bled, hladen vlažen znoj?<br/>- Hiter srčni utrip (>100 utripov na minuto), zmedenost ali bolezen jeter?"}

    AirwayShock -->|"DA: aktivna hematemeza ali šok"| Emergency911["1. Takoj pokličite 911 / 112 / 999<br/>2. Če bruhate ali ste zaspani: prevrnite se v levi stranski položaj za dvigovanje<br/>3. Če ste pozorni in NE bruhate: položite se na hrbet<br/>4. Ničesar ne shranjujte z usti (NPO)<br/>5. Pokrijte se s toplo odejo in spremljajte dihanje"]

    AirwayShock -->|"NE: Buden, stabilen, ne bruha"| StoolColor{"Kako izgleda blato ali straniščna školjka?"}

    StoolColor -->|"Jet-črno, lepljivo, katranasto blato<br/>z neprijetnim vonjem (Melena)"| MelenaCheck{"Ali je bolnik jemal železove tablete, pepto-bismol,<br/>aktivno oglje ali črni sladki koren?"}
    MelenaCheck -->|"Ne (ali nisem prepričan)"| MelenaER["PRAVA MELENA = Krvavitev v zgornjem delu prebavil (>50 do 100 ml krvi v želodcu):<br/>Takoj pojdite na urgentni oddelek bolnišnice<br/>(pokličite 911 / 112 / 999, če ste starejši, jemljete zdravila za redčenje krvi ali slabotni)<br/>NE vozite sami; ostani Nothing by Mouth"]
    MelenaCheck -->|"Da, in NIČ bolečine v želodcu,<br/>omotica ali šibkost"| Pseudomelena["Verjetno Pseudomelena (neškodljivo temno zeleno/črno obarvanje):<br/>Obrnite se na zdravnika še isti dan, da potrdite s testom fekalne okultne krvi"]

    StoolColor -->|"Velika količina kostanjevih strdkov ali<br/>skleda, polna svetlo rdeče krvi (hematohezija)"| BriskLower["Hitra krvavitev v spodnjem delu prebavil (ali obsežna hitra krvavitev v zgornjem delu prebavil):<br/>Pokličite 911 / 112 / 999 ali nujni bolnišnični prevoz.<br/>Ulezite se, imejte toplo, prinesite vse stekleničke za redčenje krvi"]

    StoolColor -->|"Majhne črte svetlo rdeče krvi SAMO<br/>na toaletnem papirju po trdem blatu"| MinorAnorectal["Verjetni hemoroidi ali analne razpoke:<br/>Načrtujte takojšen pregled pri zdravniku, da izključite kolorektalne polipe/raka<br/>Takoj pojdite na urgenco, če se krvavitev ne ustavi ali se pojavi omotica"]

Dekodiranje 4 vizualnih vzorcev krvavitev iz prebavil: kaj vam pove barva¶

Ko kri potuje skozi človeški prebavni trakt, želodčna klorovodikova kislina, prebavni encimi (pepsin) in črevesne bakterije kemično spremenijo rdečo molekulo hemoglobina v rdečih krvnih celicah in spremenijo njeno barvo iz svetlo škrlatne v temno rjavo-črno. Če natančno pogledate, kaj je bilo izbruhano ali izpuščeno v stranišče, lahko natančno ugotovite, od kod prihaja krvavitev in kako hitro poteka.

Lažni alarmi: Razlikovanje prave krvi od neškodljive hrane in obarvanja tablet ("Pseudomelena")¶

Preden zgrabite paniko zaradi temnega ali rdečkastega blata pri nekom, ki se počuti popolnoma zdravega, ima normalen utrip in nima vrtoglavice ali bolečin v trebuhu, preverite, ali je v zadnjih 24 do 48 urah zaužil eno od teh pogostih mimikov:

• Neškodljive imitacije Black Melena ("Pseudomelena"):
• Poralni dodatki železa (železov sulfat, železov glukonat, prenatalni vitamini): blato obarva temno zelenkasto-črno, vendar ima blato normalno čvrsto obliko (ni lepljivega katrana) in nima gnilega vonja po prebavljeni krvi.
• Bizmutov subsalicilat (pepto-bismol, kaopektat): Bizmut reagira s sledmi žvepla v slini in črevesju, da nastane črni bizmutov sulfid, ki pogosto obarvata tako jezik kot blato kot curek.
• Aktivno oglje, črni sladki koren, temna čokolada/piškoti Oreo ali velike sklede temnih borovnic/grozdnega soka.
• Neškodljive imitacije rdeče hematohezije/rdečega bruhanja:
• Rdeča pesa (rdeča pesa / pigment betanin), rdeča želatina (Jell-O), Kool-Aid / rdeče športne pijače, rdeča živilska barvila, dragon fruit ali velike količine paradižnikove omake.
• Safety Rule: If there is any doubt whatsoever, or if the person has stomach pain, weakness, sweating, or takes aspirin/blood thinners, always treat it as real blood and go to the emergency room (a 30-second hospital fecal occult blood test or hemoglobin fingerstick settles the question immediately).

Major causes of upper and lower gastrointestinal bleeding¶

Understanding what causes GI bleeding helps you give critical medical history to the paramedics and emergency physicians.

1. Upper GI bleeding causes (75% to 80% of all hospital GI bleed admissions)¶

• Peptic Ulcer Disease (Gastric and Duodenal Ulcers: 40% to 50% of upper bleeds): Deep sores eroded into the lining of the stomach or the first part of the small intestine (duodenum), almost always caused by either Helicobacter pylori (H. pylori) bacterial infection or regular use of NSAID painkillers (ibuprofen, naproxen, aspirin, meloxicam, diclofenac). When an ulcer eats down into the submucosa and erodes the wall of a major artery (such as the gastroduodenal artery behind the duodenum or the left gastric artery), blood spurts under high arterial pressure into the gut.
• Esophageal and Gastric Varices (10% to 20% of upper bleeds, highest mortality): In patients with liver cirrhosis (from alcohol use, hepatitis B or C, or fatty liver disease) or portal vein thrombosis, scar tissue in the liver blocks normal blood flow from the intestines. Pressure backs up in the portal vein (portal hypertension), forcing blood to detour through fragile, thin-walled veins lining the lower esophagus and upper stomach (varices), which swell like varicose veins. When a varix ruptures, it causes painless, explosive projectile vomiting of hundreds of milliliters of bright red blood and carries a 15 to 20 percent mortality rate per bleeding episode.
• Mallory-Weiss Tear (5% to 15% of upper bleeds): A longitudinal laceration (tear) in the mucous membrane at the junction where the esophagus meets the stomach, triggered by violent retching, dry heaving, or forceful vomiting (after heavy alcohol binge drinking, food poisoning, hyperemesis gravidarum in pregnancy, or severe coughing fits). Typically starts with several episodes of normal vomit followed suddenly by bright red blood.
• Erosive Gastritis, Esophagitis, and Dieulafoy Lesion: Diffuse pinpoint bleeding from severe acid reflux, alcohol, critical illness stress, or a Dieulafoy lesion (an abnormally large, tortuous submucosal artery in the upper stomach that erodes through a tiny mucosal defect and causes massive sudden bleeding without an ulcer).

2. Lower GI bleeding causes (Colon, Rectum, and Small Bowel)¶

• Diverticular Bleeding (Diverticulosis: 30% to 50% of brisk lower bleeds): Small pouch-like herniations (diverticula) in the muscular wall of the colon, common in adults over age 50, form right where penetrating nutrient arteries (vasa recta) pierce the colon wall. If a vasa recta artery inside a diverticulum ruptures, it causes sudden, completely painless passing of large amounts of maroon or bright red blood and clots into the toilet.
• Angiodysplasia (Vascular Ectasias): Fragile, twisted tangles of dilated capillaries and veins in the wall of the right colon or small intestine, common in older adults, patients with chronic kidney disease, or patients with aortic stenosis (Heyde's syndrome).
• Ischemic Colitis, Inflammatory Bowel Disease (Ulcerative Colitis / Crohn's Disease), and Infectious Colitis: Unlike diverticular bleeding (which is usually painless), these conditions cause crampy lower abdominal pain paired with bloody diarrhea or mucus.
• Colorectal Polyps and Colorectal Cancer: Often cause slow, chronic oozing leading to iron-deficiency anemia, or intermittent dark red streaks mixed into the stool fabric.
• Hemorrhoids and Anal Fissures: Swollen veins in the anal canal (hemorrhoids) or a sharp tear in the anal lining (fissure, which feels like "passing broken glass" during a bowel movement) typically coat the outside of the stool or drip bright red blood onto the toilet paper after wiping.

Recognizing hypovolemic shock: Why normal blood pressure can be a lie¶

An average adult body holds roughly 5,000 milliliters (5 liters / 10.5 pints) of blood. When a person bleeds into their stomach or colon, the body immediately unleashes a rush of adrenaline to constrict blood vessels and speed up the heart, which keeps systolic blood pressure looking deceptively normal until the patient has already lost 30 percent (1.5 liters) of their blood.

Use the American College of Surgeons Advanced Trauma Life Support (ATLS) hemorrhage classification to recognize early shock before blood pressure crashes:

Critical warnings: Liver cirrhosis, blood thinners, and aortoenteric fistula¶

If the bleeding person belongs to any of these three high-risk groups, inform the 911 / 112 / 999 dispatcher and paramedics in your very first sentence:

1. Known or Suspected Liver Disease / Cirrhosis (Variceal Bleed): Look for yellow eyes/skin (jaundice), a swollen fluid-filled belly (ascites), spider-like red blood vessels on the chest (spider angiomata), or red palms (palmar erythema). Variceal hemorrhage requires immediate hospital intravenous terlipressin or octreotide (to lower portal vein pressure), prophylactic IV antibiotics (ceftriaxone), and emergency endoscopic variceal band ligation within 12 hours.
2. Patients Taking Anticoagulants ("Blood Thinners") or Dual Antiplatelet Therapy: Check if the patient takes warfarin (Coumadin), Direct Oral Anticoagulants (apixaban [Eliquis], rivaroxaban [Xarelto], edoxaban [Savaysa], dabigatran [Pradaxa]), or antiplatelets (clopidogrel [Plavix], prasugrel, ticagrelor, aspirin). Hospital emergency departments carry specific intravenous reversal antidotes (4-factor Prothrombin Complex Concentrate [Kcentra/Beriplex] + IV Vitamin K for warfarin; andexanet alfa for apixaban/rivaroxaban; idarucizumab [Praxbind] for dabigatran) that can stop fatal bleeding if the medical team knows which pill the patient takes and when the last dose was swallowed.
3. Prior Abdominal Aortic Aneurysm (AAA) Graft Surgery ("Herald Bleed" of an Aortoenteric Fistula): If a person who has ever had an open or endovascular surgical graft placed on their abdominal aorta develops any gastrointestinal bleed (even a small, self-stopping episode of hematemesis or melena), it is a surgical emergency until proven otherwise. A synthetic aortic graft can slowly erode into the wall of the adjacent third part of the duodenum, creating an aortoenteric fistula; a small "herald bleed" is often followed hours or days later by catastrophic, fatal exsanguination directly from the aorta into the gut unless repaired in the operating room.

Special considerations: Pediatric GI bleeding and button battery ingestion¶

When an infant, toddler, or older child vomits blood or passes dark or bloody stools, both the causes and the critical blood volume thresholds differ dramatically from adults. Because a child's circulating blood volume is only 70 to 80 milliliters per kilogram of body weight (meaning a 10 kilogram [22 pound] 1-year-old has only 750 milliliters of total blood in their entire body), losing just 150 to 200 milliliters (less than one cup) of blood places a toddler in immediate hypovolemic shock.

• Swallowed Button Battery (Aortoesophageal Fistula Emergency): If a young child vomits even a tiny drop or streak of bright red blood or coffee-ground material, ask immediately if they could have swallowed a lithium coin-cell button battery (even up to 2 to 4 weeks ago, as liquefaction necrosis can erode from the esophagus into the aorta days after battery removal). Call 911 / 112 / 999 immediately and do not give anything by mouth once hematemesis has occurred.
• Intussusception ("Currant Jelly" Stools in Infants 3 Months to 3 Years): If a baby or toddler suddenly draws their knees up to their chest with screaming bouts of colicky abdominal pain every 15 to 20 minutes, followed by lethargy, vomiting, and passing dark red, mucus-filled stools that look like red currant jelly, one segment of their intestine has telescoped inside another (intussusception). This requires immediate emergency hospital ultrasound and air-enema reduction to prevent bowel necrosis and perforation.
• Swallowed Maternal Blood or Epistaxis (Nosebleed) Blood: Sometimes a breastfeeding newborn vomits blood or passes dark stools simply from swallowing maternal blood from a cracked nipple, or an older child vomits coffee-ground blood after swallowing blood from a posterior nosebleed overnight. Even so, a doctor must evaluate the child to rule out true mucosal bleeding, Meckel's diverticulum (painless brick-red rectal bleeding in toddlers), or juvenile polyps.

What to expect in the hospital emergency department: Risk scores and endoscopic hemostasis¶

Knowing what happens once the ambulance arrives at the emergency room helps family members provide clear consent and medication histories:

1. Two Large-Bore Intravenous Lines and Restrictive Blood Transfusion: Emergency nurses immediately place two large-bore intravenous cannulas (16-gauge or 18-gauge) into the forearm or antecubital veins, draw blood for a complete blood count, coagulation panel (INR), lactate, and blood type/crossmatch, and infuse warm balanced crystalloid fluids (Ringer's lactate or \(0.9\%\) normal saline). Modern randomized clinical trials (validated by the ACG, ESGE, and UK NICE) show that a restrictive packed red blood cell transfusion threshold (transfusing when hemoglobin drops to \(7\text{ g/dL}\) [\(70\text{ g/L}\)] in most patients, or \(8\text{ g/dL}\) [\(80\text{ g/L}\)] in patients with active coronary heart disease) saves more lives than over-transfusing, because over-transfusing raises portal and arterial blood pressure and blows off newly formed clots.
2. Glasgow-Blatchford Score (GBS) and Intravenous Medication: Doctors calculate the Glasgow-Blatchford Score (using blood urea nitrogen, hemoglobin, systolic blood pressure, pulse rate, melena, syncope, liver disease, and heart failure) to determine severity. Patients receive high-dose intravenous proton pump inhibitors (such as pantoprazole or esomeprazole) to neutralize stomach acid so platelets can clot, prokinetic erythromycin (given 30 to 60 minutes before endoscopy to clear blood clots from the stomach view), and octreotide or terlipressin plus IV ceftriaxone if liver cirrhosis is suspected.
3. Endoscopic Hemostasis, Interventional Radiology, or Balloon Tamponade: Within 12 to 24 hours (or immediately after airway intubation in unstable patients), a gastroenterologist passes a flexible fiber-optic esophagogastroduodenoscope (EGD) down the throat to locate the bleeding vessel and seal it using metal hemoclips, thermal multipolar electrocoagulation, epinephrine injection, hemostatic powder spray (Hemospray), or elastic variceal rubber band ligation. If bleeding cannot be stopped endoscopically, interventional radiologists perform transcatheter arterial embolization (TAE) (threading a microcatheter through the femoral or radial artery to plug the bleeding branch with coils) or place a transjugular intrahepatic portosystemic shunt (TIPS) for refractory varices.

Pogosta vprašanja¶

Viri preverjeni¶

• American College of Gastroenterology (ACG, United States): ACG Clinical Guideline: Upper Gastrointestinal and Ulcer Bleeding (Laine et al., American Journal of Gastroenterology, 2021) and ACG Clinical Guideline: Management of Patients with Acute Lower Gastrointestinal Bleeding (Sengupta et al., 2023).
• European Society of Gastrointestinal Endoscopy (ESGE): ESGE Guideline: Endoscopic Diagnosis and Management of Nonvariceal Upper Gastrointestinal Hemorrhage (2021) and Baveno VII Consensus Workshop on Portal Hypertension and Variceal Bleeding (2022).
• National Institute for Health and Care Excellence (NICE, United Kingdom) and British Society of Gastroenterology (BSG, United Kingdom): Acute Upper Gastrointestinal Bleeding in Over 16s: Management (CG141) and BSG Multisociety Care Bundle for Early Management of Acute Upper GI Bleeding.
• American College of Surgeons (ACS, United States): Advanced Trauma Life Support (ATLS) Student Course Manual (Classification of Hemorrhagic Shock: Classes I through IV and the Lethal Triad of Hypothermia, Acidosis, and Coagulopathy).

Sorodni vodniki¶

• Shock recognition and first aid management
• Bleeding control: direct pressure, packing, and tourniquets
• Fainting and syncope evaluation
• Food poisoning, acute gastroenteritis, and dehydration
• Številke za klic v sili in mednarodno pošiljanje