
Sign up to save your podcasts
Or

Ammonia (NH3) Lab Values

Overview
- Ammonia
- Normal Value Range
- Pathophysiology
- Special considerations
- Too High: Causes, Symptoms, Treatments
- Too Low: Causes, Symptoms, Treatments
Nursing Points General
- Normal value range
- 19-60 mcg/dL
- Pathophysiology
- Byproduct of protein metabolism
- Proteins → ammonia
- Ammonia → urea via the liver
- Urea excreted to the kidneys
- If ammonia is not converted to urea
- Ammonia ↑ in bloodstream
- Causes hepatic encephalopathy
- Neurotoxic
- ↓ Level of consciousness
- Confusion
- Altered mental status
- Refer to Neuro lesson 03.06 Encephalopathies
- Special considerations
- Sent in either green or lavender tube
- Typically sent on ice
- Discuss with facility lab or unit
- Elevations in ammonia
- Liver failure
- Treatment:
- Lactulose
- Ammonia binding agent
- Given PO or PR
- Ammonia excreted via stool
- Hepatic encephalopathy
- TPN
- GI hemorrhage
- Reye’s syndrome
- Decreased ammonia levels
- Antibiotics
Assessment
- Assess patient’s cognition and level of consciousness
- Assess patient’s ability to swallow and protect airway
Therapeutic Management
- Lactulose via rectal tube or PO if patient can tolerate oral medications and follow directions
Nursing Concepts
- Lab Values
- Gastrointestinal/Liver Metabolism
...more
View all episodes
By Jon Haws RN: Critical Care Nurse & NCLEX Educator
Ammonia (NH3) Lab Values

Overview
- Ammonia
- Normal Value Range
- Pathophysiology
- Special considerations
- Too High: Causes, Symptoms, Treatments
- Too Low: Causes, Symptoms, Treatments
Nursing Points General
- Normal value range
- 19-60 mcg/dL
- Pathophysiology
- Byproduct of protein metabolism
- Proteins → ammonia
- Ammonia → urea via the liver
- Urea excreted to the kidneys
- If ammonia is not converted to urea
- Ammonia ↑ in bloodstream
- Causes hepatic encephalopathy
- Neurotoxic
- ↓ Level of consciousness
- Confusion
- Altered mental status
- Refer to Neuro lesson 03.06 Encephalopathies
- Special considerations
- Sent in either green or lavender tube
- Typically sent on ice
- Discuss with facility lab or unit
- Elevations in ammonia
- Liver failure
- Treatment:
- Lactulose
- Ammonia binding agent
- Given PO or PR
- Ammonia excreted via stool
- Hepatic encephalopathy
- TPN
- GI hemorrhage
- Reye’s syndrome
- Decreased ammonia levels
- Antibiotics
Assessment
- Assess patient’s cognition and level of consciousness
- Assess patient’s ability to swallow and protect airway
Therapeutic Management
- Lactulose via rectal tube or PO if patient can tolerate oral medications and follow directions
Nursing Concepts
- Lab Values
- Gastrointestinal/Liver Metabolism
...moreMore shows like Lab Values Podcast by NURSING.com (Nursing Podcast, normal lab values for nurses for NCLEX®) by NURSING.com (NRSNG)
View all