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A patient have problem of diarrhea like she eat and going to toilet and having a vomiting after eating anything is necessary of kft

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diarrhea AND dehydration

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CDC acute diarrhea vomiting dehydration warning signs when medical care kidney function tests

Yes, kidney function tests (KFT/RFT) may be needed if she has significant diarrhea and vomiting, especially if she cannot keep fluids down. Vomiting and diarrhea can cause dehydration, which can temporarily affect kidney function and electrolytes.
She should be assessed urgently today, or go to the emergency department now if any of these are present:
  • Cannot keep even small sips of water/ORS down
  • Very little urine, dark urine, dry mouth, severe thirst
  • Dizziness, fainting, unusual weakness, confusion
  • Blood in vomit or stool, black stool
  • Severe abdominal pain, high fever
  • Pregnancy, older age, diabetes, known kidney disease, or symptoms lasting over 24 hours
A clinician may order KFT (urea, creatinine), electrolytes such as sodium and potassium, blood sugar, and possibly stool tests, depending on examination and duration. Dehydration signs include reduced/dark urine, dry mouth, and dizziness, as described by the CDC guidance.
Until she is seen: give oral rehydration solution (ORS) in very small frequent sips, for example 1 to 2 teaspoons every 1 to 2 minutes. Avoid oily foods, alcohol, and self-starting antibiotics or anti-diarrheal medicines. If she vomits every attempt at fluid intake, she may need IV fluids.

In which more cases we give kft

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acute kidney injury AND diagnostic testing

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NICE acute kidney injury when to measure serum creatinine risk factors dehydration sepsis nephrotoxic drugs

KFT/RFT means kidney function tests: usually serum creatinine, urea/BUN, eGFR, and often electrolytes such as potassium and sodium.
We commonly order KFT in these situations:
  1. Dehydration or fluid loss
    • Repeated vomiting or diarrhea
    • Poor drinking or unable to keep fluids down
    • Low urine output, dark urine, dizziness, low blood pressure
    • Burns or heavy bleeding
  2. Suspected kidney problem
    • Swelling of face/legs
    • Frothy urine, blood in urine
    • Reduced urine, flank pain
    • High creatinine previously or known chronic kidney disease
  3. Acute illness with risk of acute kidney injury
    • Sepsis or severe infection
    • Shock, very low blood pressure
    • Heart failure, severe liver disease
    • Diabetic emergency
    • Elderly patients, especially age over 65
  4. Before or during medicines that can affect kidneys
    • NSAID painkillers: ibuprofen, diclofenac, naproxen
    • ACE inhibitors/ARBs: enalapril, ramipril, losartan, telmisartan
    • Diuretics: furosemide, hydrochlorothiazide
    • Aminoglycoside antibiotics, such as gentamicin
    • Some antivirals, chemotherapy, or contrast dye for CT scans
      KFT is especially important if these are used while the patient is dehydrated.
  5. Chronic conditions monitoring
    • Diabetes
    • Hypertension
    • Known kidney disease
    • Heart failure
    • Autoimmune disease, such as lupus
    • Urinary obstruction or enlarged prostate
  6. Pre-operative assessment
    • Major surgery, particularly in older adults or people with medical illnesses.
For your patient with vomiting and diarrhea, order KFT plus electrolytes if symptoms are frequent, urine is reduced, she looks dehydrated, is weak/dizzy, has diabetes/kidney disease, or needs IV fluids/admission. Current NICE AKI guidance specifically includes hypovolemia, sepsis, oliguria, diabetes, CKD, heart/liver disease, nephrotoxic drugs, and age 65+ as reasons to measure creatinine and compare it with baseline.
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