Criteria

Clinical scoring system for diagnosis of acute heart failure[36]

Possible total of 14:

  • Age >75 years - score 1

  • Orthopnea present - score 2

  • Lack of cough - score 1

  • Current use of a loop diuretic (before presentation) - score 1

  • Rales - score 1

  • Lack of fever - score 2

  • Elevated N-terminal pro-brain natriuretic peptide (NT-proBNP)* - score 4

  • Interstitial edema on chest x-ray - score 2.

Likelihood of heart failure:

  • Low: 0 to 5

  • Intermediate: 6 to 8

  • High: 9 to 14.

* Elevated NT-proBNP defined as >450 picograms/mL if age <50 years and >900 picograms/mL if age >50 years.

Framingham criteria for congestive heart failure (CHF)[62]

The Framingham criteria are the most widely accepted clinical criteria for diagnosing heart failure. For establishing a definite diagnosis of CHF, two major criteria or one major and two minor criteria must be present.

Major criteria are:

  • Paroxysmal nocturnal dyspnea or orthopnea

  • Neck-vein distention

  • Rales

  • Cardiomegaly

  • Acute pulmonary edema

  • Third heart sound (S3) gallop

  • Increased venous pressure >16 cm of water

  • Circulation time 25 seconds or longer (no longer used clinically for the diagnosis of CHF, although in the criteria)

  • Hepatojugular reflux.

Minor criteria are:

  • Ankle edema

  • Night cough

  • Dyspnea on exertion

  • Hepatomegaly

  • Pleural effusion

  • Vital capacity reduced one third from maximum

  • Tachycardia (≥120 bpm).

Major or minor criteria are:

  • Weight loss of 4.5 kg or more in 5 days in response to treatment.

New York Heart Association (NYHA) clinical classification of heart failure[2]

  • Class I: asymptomatic

  • Class II: mild symptoms with moderate exertion

  • Class III: symptoms with minimal activity

  • Class IV: symptoms at rest.

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