Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX
When managing a patient with suspected nephritic syndrome in primary care while awaiting specialist input, focus on prompt referral, blood pressure control, medication review, and patient education.
- Immediate Actions and Referral:
- Discuss management with a nephrologist as soon as possible and within 24 hours, especially if there is a possible diagnosis that may need specialist treatment (e.g., glomerulonephritis) or if there is acute kidney injury with no clear cause NICE NG148.
- Refer adults for specialist assessment if they have a urinary albumin:creatinine ratio (ACR) of more than 30 mg/mmol together with haematuria NICE NG203,NICE CKS,NICE CKS.
- Arrange emergency admission if the patient presents with severe hyperkalaemia (potassium greater than 6 mmol/L), severe uraemia, or signs of fluid overload or dehydration NICE CKS,NICE CKS.
- Consider discussing management with a specialist if there are concerns but the patient does not need to see a specialist directly NICE NG203,NICE CKS,NICE CKS.
- Blood Pressure Management:
- Assess for hypertension NICE CKS,NICE CKS.
- If the patient has hypertension and a urinary ACR over 30 mg/mmol, offer an angiotensin-receptor blocker (ARB) or angiotensin-converting enzyme (ACE) inhibitor first line, titrated to the highest licensed dose the person can tolerate NICE CKS,NICE CKS. Do not offer a combination of renin-angiotensin system antagonists NICE CKS,NICE CKS.
- Aim to keep clinic systolic blood pressure below 130 mmHg (target range 120–129 mmHg) and diastolic blood pressure below 80 mmHg if the ACR is 70 mg/mmol or more NICE CKS,NICE CKS. If the ACR is less than 70 mg/mmol, aim for a clinic systolic blood pressure below 140 mmHg (target range 120–139 mmHg) and diastolic blood pressure below 90 mmHg NICE CKS,NICE CKS.
- Refer to a nephrology specialist if hypertension remains uncontrolled despite the use of at least four antihypertensive drugs at therapeutic doses NICE NG203,NICE CKS,NICE CKS.
- Medication Review:
- Review any potentially nephrotoxic drugs that may cause acute kidney injury (AKI) in severe intercurrent illness, and reduce or stop them as appropriate NICE CKS,NICE CKS. Clearly explain when discontinued medicines should be restarted NICE CKS,NICE CKS.
- Exercise caution when giving non-steroidal anti-inflammatory drugs (NSAIDs) to people with chronic kidney disease (CKD) over prolonged periods, monitoring their effects on glomerular filtration rate (GFR) NICE NG203.
- Monitoring and Follow-up:
- Arrange regular follow-up in primary care, with frequency depending on clinical judgement NICE CKS,NICE CKS.
- Monitor for disease progression NICE CKS,NICE CKS.
- Monitor serum creatinine after any episode of acute kidney injury NICE NG148.
- Patient Education and Lifestyle Advice:
- Offer education and information tailored to the severity and cause of CKD, associated complications, and the risk of progression NICE NG203.
- Discuss immediate treatment options, monitoring, prognosis, and support options with the patient NICE NG148.
- Encourage the patient to take exercise, achieve a healthy weight, and stop smoking NICE NG203.
- Offer dietary advice about potassium, phosphate, calorie, and salt intake appropriate to the severity of CKD NICE NG203. This should be provided alongside education, detailed dietary assessment, and supervision to prevent malnutrition NICE NG203. Do not offer low-protein diets (dietary protein intake less than 0.6 to 0.8 g/kg/day) NICE NG203.
- Inform the patient about their 5-year risk of needing renal replacement therapy, using jargon-free language NICE NG203.
- Support self-management by providing information about blood pressure, smoking cessation, exercise, diet, and medicines, enabling informed choices NICE NG203.
- Consider offering access to psychological support, such as support groups or counselling, to help with coping with CKD NICE NG203.