The 68-Year-Old with Breathlessness, Heart Failure and a New Cough
A 68-year-old man with heart failure with reduced ejection fraction (LVEF 32%), type 2 diabetes and chronic kidney disease stage 3 (eGFR 41) attends with 3 weeks of worsening breathlessness on exertion and a dry cough. His medications: ramipril 5 mg, bisoprolol 5 mg, furosemide 40 mg, spironolactone 25 mg, metformin 1 g twice daily, atorvastatin 40 mg. BP 118/70, pulse 76, JVP not raised, fine crackles at both bases, mild ankle oedema, weight up 2 kg in 3 weeks. He has just returned from a month with family in a hot climate and admits he 'stopped the water tablet' because of the heat and the toilet trips. He asks whether the cough means he should stop the ramipril.
1. Construct a differential for his breathlessness and cough, and explain how you would distinguish the causes using history, examination and available tests.
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Differential
- Decompensated heart failure - most likely: 2 kg weight gain, basal crackles, oedema, and a clear precipitant (stopped furosemide).
- ACE-inhibitor cough - dry, persistent, often nocturnal, begins weeks to months after starting; a diagnosis of exclusion. He has been on ramipril long term, which makes a new cough less likely to be ACE-related but not impossible.
- Pulmonary oedema vs infection - crackles are bilateral and basal; fever, purulent sputum or focal signs would suggest infection.
- Worsening renal function - eGFR 41 with diuretic withdrawal and possible dehydration from heat; uraemia can cause breathlessness.
- Anaemia - common in HF/CKD; check FBC.
- Pulmonary embolism - recent long-haul travel is a risk; but no pleuritic pain, no tachycardia, no unilateral leg swelling - keep in mind if hypoxia or sudden worsening.
- Metformin-associated lactic acidosis - rare but relevant with CKD and dehydration; check lactate if unwell.
How to distinguish:
- History: timing of cough relative to ramipril, nocturnal symptoms, orthopnoea, PND, fever, sputum, travel and leg symptoms.
- Examination: JVP, third heart sound, lung bases, oedema, temperature, calf tenderness.
- Tests: ECG, chest X-ray, BNP/NT-proBNP (low value makes HF unlikely), U&E, FBC, glucose/HbA1c, urine dipstick, and echocardiogram if not recent. A trial off ramipril is not the first move - treat the likely decompensation first.
2. He has stopped furosemide. What would you do about his diuretic and other medications today, with what monitoring?
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Immediate management
- Restart/increase furosemide: restart 40 mg and consider 40 mg twice daily for the first few days given 2 kg weight gain and crackles; target a gradual return to dry weight (roughly 1 kg/day). Explain why stopping it caused the problem and give a written 'sick day' plan.
- Fluid and salt advice: moderate fluid restriction only if hyponatraemic; avoid added salt; daily weighing with a written action plan (e.g. call if weight rises >2 kg in 3 days).
- Review ramipril: continue unless there is AKI, hyperkalaemia or symptomatic hypotension - it is disease-modifying in HFrEF. Do not stop it for a cough without first treating the congestion; if cough persists after decongestion, consider switching to an ARB (e.g. losartan) rather than stopping RAAS blockade.
- Spironolactone: check potassium and creatinine before continuing; with eGFR 41 and dehydration risk, hold if K⁺ >5.5 or creatinine rises significantly.
- Bisoprolol: continue if he is stable and not in acute decompensation; do not stop abruptly.
- Metformin: review - with eGFR 41 it can continue at reduced dose (max 1 g/day) but should be temporarily stopped during acute illness/dehydration; give sick-day rules.
- Monitoring: U&E, creatinine and weight at 1 week (sooner if unwell); repeat FBC and glucose; consider BNP and echocardiogram.
- Safety-net: red-flag advice - worsening breathlessness at rest, chest pain, fainting, reduced urine output.
3. He asks: 'If I keep taking all these tablets, will I live longer?' How do you discuss the evidence and his priorities, given his recent travel and wish to avoid toilet trips?
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Evidence, honestly framed:
- In HFrEF, ACE inhibitors/ARBs, beta-blockers, mineralocorticoid receptor antagonists and SGLT2 inhibitors each reduce mortality and hospitalisation; the combined effect is substantial. Diuretics relieve symptoms but do not clearly prolong life.
- So the honest answer is: 'The tablets that protect your heart are likely to help you live longer and stay out of hospital; the water tablet mainly makes you feel better - but stopping it caused this episode.'
His priorities:
- Toilet trips and travel: acknowledge this is a real quality-of-life issue. Practical solutions: time the diuretic for the morning, plan journeys around toilet access, discuss a slightly lower maintenance dose once he is back to dry weight, and use a travel plan with his clinician.
- Shared decision-making: explore what matters most - independence, travel, avoiding hospital. Use the 'benefit vs burden' framing and record his preferences.
- What not to do: do not present the drugs as optional 'extras' or overstate benefit; equally, do not collude with stopping disease-modifying therapy because of a manageable side effect.
- Deprescribing where appropriate: if his goals shift towards comfort, discuss which medications can be rationalised (e.g. statin for primary prevention in advanced illness) - but that is a later conversation, not today's.
- Plan: agree a written plan, involve a heart failure nurse, and review at 2–4 weeks to reassess symptoms, weight and his views.