BUN, Creatinine, Glucose at ang Kidney Ratio

🧠 Bakit mahalaga

SODIUM 135 hanggang 145 mEq/L; POTASSIUM 3.5 hanggang 5.0; CHLORIDE mga 98 hanggang 106; bicarbonate (CO2) 22 hanggang 26. Ang BUN na 10 hanggang 20 mg/dL ay tumataas sa kidney dysfunction, dehydration, mataas na protein intake, GI bleeding at steroids. Ang CREATININE na mga 0.6 hanggang 1.2 mg/dL ay mas specific na kidney marker dahil halos hindi ito naaapektuhan ng diet o hydration; ang tumataas na creatinine ay nangangahulugang bumababang GLOMERULAR FILTRATION RATE, at ang GFR na mas mababa sa 60 sa loob ng tatlong buwan ang tumutukoy sa chronic kidney disease. Ang BUN-to-creatinine ratio na higit sa mga 20 to 1 na may normal na creatinine ay nagmumungkahi ng dehydration o GI bleeding; ang pareho nang mataas nang proporsyonal ay nagmumungkahi ng intrinsic kidney disease. Ang fasting GLUCOSE na 70 hanggang 99 mg/dL ay normal, 100 hanggang 125 ay prediabetes, at 126 pataas sa dalawang pagkakataon ay diabetes. Ang HEMOGLOBIN A1c ay sumasalamin sa average na glucose sa loob ng 2 hanggang 3 buwan: mas mababa sa 5.7% ay normal, 5.7 hanggang 6.4% ay prediabetes, 6.5% pataas ay diabetes, na may treatment goal na karaniwang mas mababa sa 7%. CALCIUM 9 hanggang 10.5 mg/dL, MAGNESIUM 1.5 hanggang 2.5 mEq/L, PHOSPHORUS 2.5 hanggang 4.5 mg/dL; magkasalungat ang galaw ng calcium at phosphorus. Ang ALBUMIN na 3.5 hanggang 5 g/dL ay sumasalamin sa nutrition at liver synthesis, pero bumababa rin ang albumin (at prealbumin) sa pamamaga at acute na sakit, kaya hindi ito maaasahan nang mag-isa para sa nutrition; ang mababang albumin ay nagpapababa ng total calcium at nagdudulot ng edema.

SODIUM 135 to 145 mEq/L; POTASSIUM 3.5 to 5.0; CHLORIDE about 98 to 106; bicarbonate (CO2) 22 to 26. BUN 10 to 20 mg/dL rises with kidney dysfunction, dehydration, high protein intake, GI bleeding and steroids. CREATININE about 0.6 to 1.2 mg/dL is the more specific kidney marker because it is barely affected by diet or hydration; a rising creatinine means falling GLOMERULAR FILTRATION RATE, and a GFR below 60 for three months defines chronic kidney disease. A BUN-to-creatinine ratio above about 20 to 1 with a normal creatinine suggests dehydration or GI bleeding; both elevated in proportion suggests intrinsic kidney disease. Fasting GLUCOSE 70 to 99 mg/dL is normal, 100 to 125 is prediabetes, and 126 or higher on two occasions is diabetes. HEMOGLOBIN A1c reflects the average glucose over 2 to 3 months: below 5.7% normal, 5.7 to 6.4% prediabetes, 6.5% or above diabetes, with a treatment goal usually below 7%. CALCIUM 9 to 10.5 mg/dL, MAGNESIUM 1.5 to 2.5 mEq/L, PHOSPHORUS 2.5 to 4.5 mg/dL; calcium and phosphorus move in opposite directions. ALBUMIN 3.5 to 5 g/dL reflects nutrition and liver synthesis, but albumin (and prealbumin) also fall with inflammation and acute illness, so they are not reliable on their own for nutrition; low albumin lowers total calcium and causes edema.

🏥 Sa totoong buhay

💧 Ang matandang may pagsusuka sa loob ng tatlong araw ay may BUN na 52 at creatinine na 1.1, ratio na malapit sa 47 to 1. Nakilala ng nurse na prerenal dehydration ito at hindi kidney failure, at binaba ng IV fluids ang BUN pagsapit ng umaga. Kung 4.5 ang creatinine, nephrology ang plano at hindi isang litro ng saline.

💧 An older adult with vomiting for three days has a BUN of 52 and a creatinine of 1.1, a ratio near 47 to 1. The nurse recognizes prerenal dehydration rather than kidney failure, and IV fluids bring the BUN down by morning. Had the creatinine been 4.5, the plan would have been nephrology, not a liter of saline.

📌 Tandaan

• BUN 10 hanggang 20, creatinine 0.6 hanggang 1.2; ang ratio na higit sa 20 to 1 ay nagmumungkahi ng dehydrationBUN 10 to 20, creatinine 0.6 to 1.2; ratio over 20 to 1 suggests dehydration
• Ang fasting glucose na 126 o A1c na 6.5% ay nagdidiagnose ng diabetesFasting glucose 126 or A1c 6.5% diagnoses diabetes
• Mababang albumin: edema at maling mababang total calciumLow albumin: edema and a falsely low total calcium

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