Peripheral Cyanosis – Mnemonic

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Here is a quick mnemonic “PERIPHERAL“ to remember about Peripheral Cyanosis

This can be valuable for patients as well as medical doctors, nurses & students doing their clinical rounds. You can also find it very useful for med exams like USMLE, NExT Medical Step 1&2, MBBS, NEET PG, INI-CET, FMGE,MCAT & NCLEX exams

Peripheral Cyanosis : How To Remember Easily ?

  • P – Pao2 reduction due to decreased Fio2 without sufficient alveolar hyperventilation.
  • E – Extensive pneumonia or pulmonary edema causing central cyanosis.
  • R – Reduced Sao2 due to shunting of systemic venous blood into the arterial circuit.
  • I – In patients with right-to-left shunts, cyanosis severity depends on shunt size and Hb-O2 saturation.
  • P – Pulmonary arteriovenous fistulae, size, and number affect the severity of cyanosis.
  • H – Hereditary hemorrhagic telangiectasia can cause cyanosis through fistulae.
  • E – Exercise-induced venous blood unsaturation intensifies cyanosis in shunted patients.
  • R – Reduced oxygen delivery by methemoglobin (Hb Fe3+) and sulfhemoglobin.
  • A – Abnormal hemoglobin species impair tissue oxygen delivery.
  • L – Lack of digital clubbing with abnormal hemoglobin species.

Mnemonic :  PERIPHERAL

Dr. Arin Nandi

Passionate About Medical Science & Helping Future Doctors Achieve Top Ranks In Medical Exams. He is professionally a dentist as well as a public health expert from JIPMER (1), (2)working in health department
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