مِرسـاة ⛵

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Hyponatremia (Low Sodium):

Causes: Heat exhaustion with heavy sweating, severe vomiting or diarrhea, major burns, or over-infusion of salt-free fluids (e.g., 5% Dextrose).

Hyperkalemia (High Potassium):

Causes: Massive transfusion of stored/aged blood, severe tissue hypoxia/shock, and acute renal failure with anuria.

Hypokalemia (Low Potassium):

Causes: Intestinal obstruction, continuous vomiting or nasogastric suctioning, paralytic ileus, and acute generalized peritonitis.

Hypocalcemia (Low Calcium):

Causes: Massive blood transfusions (citrate toxicity) and acute pancreatitis.

Hypermagnesemia (High Magnesium):

Causes: Magnesium sulfate (MgSO_4) overdose in pre-eclampsia/eclampsia, usually combined with maternal renal impairment.

السؤال ده متجاوب غلط في ملفات النسا. و الاجابة الصح tachycardia من المنسق

Earliest indicator,sign ➡️ Tachycardia

صدقة جارية على روح زميلنا الدكتور كريم الغمري. اللهم اجعل القرآن العظيم نورًا له في قبره، وأنيسًا لوحشته، وشفيعًا له يوم القيامة، وارفع به درجاته، واغفر له وارحمه، واجمعنا به في جنات النعيم. اللهم لا تحرمنا أجره، ولا تفتنّا بعده، واغفر لنا وله

Vasoconstrictor

GIT Bleeding

​♦️ Vomiting blood ➡️ Hematemesis (indicates an upper GI source proximal to the ligament of Treitz). ♦️ Passage of black, tarry, foul-smelling stools ➡️ Melena (indicates upper GI bleeding or proximal small bowel bleeding). ♦️ Passage of bright red blood per rectum ➡️ Hematochezia (indicates a lower GI source, though massive rapid upper GI bleeding can also present this way). ​♦️ First priority in managing suspected upper GI bleeding ➡️ Resuscitation to ensure hemodynamic stability prior to urgent diagnostic endoscopy (performed within 24 hours). ♦️ Condition NOT causing acute massive GI bleeding ➡️ Pernicious anemia (causes vitamin B12 deficiency and atrophic gastritis, not acute hemorrhage). ​​♦️ History of long-term NSAID or aspirin use presenting with epigastric discomfort, hematemesis, tachycardia, and hypotension ➡️ Gastric or duodenal ulcer / erosions. ♦️ Mechanism of NSAID-induced bleeding ➡️ Inhibition of protective gastric prostaglandins, leading to mucosal barrier breakdown and ulceration. ​♦️ Upper GI bleeding in a patient with a history of alcohol abuse, hepatitis C, ascites, and signs of chronic liver disease (spider angiomata, splenomegaly) ➡️ Esophageal varices. ♦️ Mechanical device used for emergency tamponade and control of bleeding esophageal varices ➡️ Sengstaken-Blakemore tube. ​♦️ History of severe retching, prolonged vomiting, or heavy alcohol intake followed by bright red hematemesis in a patient with NO signs of chronic liver disease ➡️ Mallory-Weiss tear (mucosal laceration at the gastroesophageal junction). ♦️ Management of a Mallory-Weiss tear with no active bleeding confirmed on endoscopy ➡️ Observation (conservative management, as bleeding is typically self-limiting). ​♦️ Most common cause of massive lower gastrointestinal bleeding in adults ➡️ Diverticulosis. ♦️ Most common cause of bright red rectal bleeding associated with constipation and straining ➡️ Hemorrhoids (internal piles) or anal fissures. ♦️ Common causes of gastrointestinal bleeding in neonates ➡️ Necrotizing enterocolitis (NEC), midgut volvulus, and swallowed maternal blood.

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