Tag: Hyperkalemia

Hyperkalemia

Hyperkalemia

Q. 1

All the following drugs may cause hyperkalemia except-

 A

Cyclosporine

 B

Amphotericin B

 C

Heparin

 D

NSAIDs

Q. 1

All the following drugs may cause hyperkalemia except-

 A

Cyclosporine

 B

Amphotericin B

 C

Heparin

 D

NSAIDs

Ans. B

Explanation:

Ans. is ‘b’ Amphotericin B

Important drugs causing hvperkalemia

o ACE inhibitors           o Trimethoprim            o Succinylcholine            o K+ sparing diuretic        o Heparin

o NSAIDS                   o Pentamidine              o Lithium.                    o Cyclosporine


Q. 2

All of the following may occur due to hyperkalemia, except :

 A

Prolonged PR interval

 B

Prolonged QRS interval

 C

Prolonged QT interval

 D

Prolonged QT interval

Q. 2

All of the following may occur due to hyperkalemia, except :

 A

Prolonged PR interval

 B

Prolonged QRS interval

 C

Prolonged QT interval

 D

Prolonged QT interval

Ans. C

Explanation:

Answer is C (Prolonged QT interval)

Prolonged QT interval is not a manifestation of hyperkalemia. Prolonged PR interval, prolonged QRS duration and ventricular asystole are all known manifestations of hyperkalemia. Prolonged QT interval is a manifestation of Hypocalcemia.


Q. 3

The ECG in hyperkalemia classically shows:

September 2009, 2010

 A

Increase QRS duration

 B

Shortened PR interval

 C

Prominent U waves

 D

Increased R wave amplitude

Q. 3

The ECG in hyperkalemia classically shows:

September 2009, 2010

 A

Increase QRS duration

 B

Shortened PR interval

 C

Prominent U waves

 D

Increased R wave amplitude

Ans. A

Explanation:

Ans. A: Increase QRS duration


Q. 4

Hyperkalemia is caused by ‑

 A

Amphotiricin B

 B

Beta agonists

 C

Gentamycin

 D

Succinylcholine

Q. 4

Hyperkalemia is caused by ‑

 A

Amphotiricin B

 B

Beta agonists

 C

Gentamycin

 D

Succinylcholine

Ans. D

Explanation:

Ans. is ‘d’ i.e., Succinylcholine

Drugs causing hypokalemia

  • β agonist
  • Licorice                     
  • Penicillin derivatives 
  • Amphotericin B 
  • Theophylline
  • Steroids
  • α Blockers 
  • Toluene abuse
  • Gentamicin
  • Insulin
  • Vitamin B12
  • Diuretics
  • Carbenoxalone

Important drugs causing hyperkalemia

  • ACE inhibitors
  • Trimethoprim
  • Succinylcholine            
  • K+ sparing diuretic      
  • Hep.
  • NSAIDS
  • Pentamidine 
  • Lithium.                          
  • Cyclosporine

Quiz In Between



Hyperkalemia

Hyperkalemia


HYPERKALEMIA

  • Hyperkalemia is defined as plasma potassium level of 5.5mM/L
  • Severe hyperkalemia is >6.0mM/L

Etiology-

  • Renal failure
  • Decrease distal flow
  • Decrease K+ secretion (most common)
  • Impaired Na reabsorption
  • Increase chloride reabsorption
  • Pseudohyperkalemia
  • Drugs- ACE inhibitors, NSAIDs, amiloride, Digitalis overdose, Heparin, lithium, succinyl chloride, cyclosporine.

Pseudohyperkalemia-

  • It is an artifactual increase in serum K+ due to release of K+ in venipuncture.

Clinical feature-

  • Cardiac arrhythmias
  • Sinus bradycardia, sinus arrest
  • Ventricular tachycardia
  • The ECG in hyperkalemia classically shows increase QRS duration.
  • Prolonged PR interval, prolonged QRS duration and ventricular asystole are  manifestations of hyperkalemia.

Treatment can be studied in module 1726

Exam Important

  • Renal failure
  • Decrease distal flow
  • Decrease K+ secretion (most common)
  • Impaired Na reabsorption
  • Increase chloride reabsorption
  • Pseudohyperkalemia
  • Drugs- ACE inhibitors, NSAIDs, amiloride, Digitalis overdose, Heparin, lithium, succinyl chloride.

Pseudohyperkalemia-

  • It is an artifactual increase in serum K+ due to release of Kin venipuncture.
Don’t Forget to Solve all the previous Year Question asked on Hyperkalemia

Module Below Start Quiz

Malcare WordPress Security