Summary
Differentials
Common
- Nonhemorrhagic volume losses
- Upper gastrointestinal bleed
- Lower gastrointestinal bleed
- Dialysis-induced hypotension
- Trauma
- Acute coronary syndrome
- Acute heart failure
- Dysrhythmia
- Acute pulmonary embolism
- Vasovagal syncope
- Medication-related
- Pregnancy (uncomplicated)
- Sepsis
- Chronic liver disease
- Parkinson disease
Uncommon
- Ruptured abdominal aortic aneurysm
- Ectopic pregnancy
- Retroperitoneal bleed
- Severe acute pancreatitis
- Carotid sinus syndrome (cardioinhibitory subtype)
- Severe hypothyroidism
- Tension pneumothorax
- Cardiac tamponade
- Situational syncope
- Anaphylaxis
- Carotid sinus syndrome (vasodepressor subtype)
- Diabetic autonomic neuropathy
- Multi-system atrophy
- Post-stroke
- Primary autonomic failure
- Amyloidosis
- Adrenal suppression (iatrogenic)
- Addison disease
- Hypopituitarism
- Thiamine deficiency
- Vitamin B12 deficiency
- Carcinoid syndrome
Contributors
Authors
Fiona Kearney, MB, BCh, BAO, MRCPI
Consultant Geriatrician
Department of Healthcare of Older People
Nottingham University Hospitals NHS Trust
Queen’s Medical Centre
Nottingham
UK
Disclosures
FK is an author of a reference cited in this topic.
Alan Moore, MB, BCh, BAO, FRCPI
Consultant Geriatrician
Beaumont Hospital
Dublin
Honorary Senior Lecturer at Royal College of Surgeons
Ireland Medical School
Dublin
Republic of Ireland
Disclosures
AM is an author of a number of references cited in this topic.
Peer reviewers
Vidhu S. Paliwal, MD
Cardiologist
Skagit Valley Hospital
Mount Vernon
WA
Disclosures
VSP declares that he has no competing interests.
Gideon Caplan, MB, BS Syd, FRACP
Director
Geriatric Medicine
Prince of Wales Hospital
Sydney
Australia
Disclosures
GC declares that he has no competing interests.
Vasi Naganathan, MBBS, FRACP, MMed (Clin Epi), PhD, Grad Cert Med Ed
Academic Sydney Medical School
University of Sydney
Consultant Geriatrician
Concord Hospital Centre for Education and Research on Ageing
Concord
Australia
Disclosures
VN declares that he has no competing interests.
Andrew Parfitt, MBBS, FFAEM
Clinical Director
Acute Medicine
Associate Medical Director
Consultant Emergency Medicine
Guy's and St Thomas' NHS Foundation Trust
Clinical Lead and Consultant
Accident Emergency Medicine
St Thomas' Hospital
London
UK
Disclosures
AP declares that he has no competing interests.
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