Skip to content
Epomedicine
Epomedicine

Mnemonics, Simplified Concepts & Thoughts

  • Medical Students
  • Bedside Clinics
  • Case Reports
  • Emergency Medicine
  • Blog
  • Surgical Skills
  • Medical Mnemonics
Epomedicine

Mnemonics, Simplified Concepts & Thoughts

ORS resomal

ORS and ReSoMal – Mnemonic

Epomedicine, Jun 11, 2019Jun 11, 2019

Last updated on June 11, 2019

Oral Rehydration Solution (ORS)

Grams per litre:

  1. SoDIum C-hloride: 2.6 gm
  2. SoDIum Ci-Trate: 2.9 gm
  3. Potassium chloride: 1.5 gm
  4. Glucose anhydrous: 13.5 gm

Mnemonic:

DI = 2 and C = 6
Ci-Trate = Rotate 6, i.e. 9
For Potassium chloride: Deduct 1 from the whole number and decimal both, i.e. (2-1).(6-1) = 1.5 gm

mmol per litre:

  1. Sodium and Glucose (Sugar): 75 each
  2. Chloride: 65
  3. Potassium: 20
  4. Citrate: 10
    Total: 245

Mnemonic:

S for Sodium and Sugar; S for 75
Sodium – 10 = Chloride = 65
Potassium – 10 = Citrate = 10

ors resomal

Rehydration Solution for Malnutrition (ReSoMal)

1 ORS packet + 50 gm sugar + 40 gm electrolytes and minerals (Cu, Zn, Mg) + 2 litre water

mmol/litre

  1. Sodium: ORS – 30 = 75-30 = 45
  2. Citrate: ORS – 3 = 10-3 = 7
  3. Glucose: ORS + 50 = 75+50 = 125
  4. Chloride: ORS + 5 = 65+5 = 70
  5. Potassium: ORS X 2 = 20 X 2 = 40
  6. Cu, Zn, Mn = 4
    Total = 300

Another Mnemonic:
1. Sodium and Potassium are almost equal. Take the mean of their ORS concentration, i.e. (75+20)/2 ~ 45 + 40
2. Remember the pairs:
Potassium and Minerals: 40 and 4 respsectively
Chloride and Citrate: 70 and 7 respectively

  • Facebook
  • Twitter
PGMEE, MRCS, USMLE, MBBS, MD/MS Gastrointestinal systemPediatrics

Post navigation

Previous post
Next post

Comment

  1. Deepak Das says:
    Jun 14, 2019 at 5:00 am

    Excellent mnemonics every week you send to me.Extremely grateful.I need more like the following.
    1.Ac.pancreatitis :BISHAP,RANSON score etc.
    2.Hepatic encephalopathy

    Reply

Leave a Reply to Deepak Das Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Epomedicine. ORS and ReSoMal – Mnemonic [Internet]. Epomedicine; 2019 Jun 11 [cited 2025 May 9]. Available from: https://epomedicine.com/medical-students/ors-resomal-mnemonic/.

Pre-clinical (Basic Sciences)

Anatomy

Biochemistry

Community medicine (PSM)

Embryology

Microbiology

Pathology

Pharmacology

Physiology

Clinical Sciences

Anesthesia

Dermatology

Emergency medicine

Forensic

Internal medicine

Gynecology & Obstetrics

Oncology

Ophthalmology

Orthopedics

Otorhinolaryngology (ENT)

Pediatrics

Psychiatry

Radiology

Surgery

RSS Ask Epomedicine

  • What to study for Clinical examination in Orthopedics?
  • What is the mechanism of AVNRT?

Epomedicine weekly

  • About Epomedicine
  • Contact Us
  • Author Guidelines
  • Submit Article
  • Editorial Board
  • USMLE
  • MRCS
  • Thesis
©2025 Epomedicine . All rights reserved.