Medicine Pearls

You put it in a pot and cook with it & a tiny amount of iron is released.

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In up to 1% of patients with Lyme disease, complete heart block can develop.

Acute respiratory distress syndrome (ARDS); diagnosis =

Clinical +
CXR +
pO2/fiO2

Patients with ventricular ectopics can usually be managed by reassurance and lifestyle modifications. If pharmacological management is required, then beta blockers are first line.

Fingernail clubbing that regressed with treatment of lung cancer ❤️

Accelerated idioventricular rhythm is common and unconcerning following recent Myocardial infarction.

SGLT-2 inhibitor is the best option for glucose control in a patient with IHD and heart failure failing glycaemic control on metformin because there is good evidence for outcome benefit across the class

Examples = canagliflozin, dapagliflozin and empagliflozin.

💊N-acetylcysteine Indications❗️

🔸N-acetylcysteine is used to reverse the effects of paracetamol overdose.

🔸NAC can be used to reduce the viscosity of respiratory secretions (acting as a mucolytic).

🔸It's also used to help prevent renal injury due to contrast nephropathy.

Indication of long-term oxygen therapy (LTOT) =

1. pO2 of < 7.3 kPa
or
2. pO2 of 7.3 - 8 kPa and one of the following:
- secondary polycythaemia
- peripheral oedema
- pulmonary hypertension