Guidelines for Heart Failure Diagnosis

If you are wondering what the procedure and guidelines are for a doctor’s diagnostic exam in chronic adult heart failure, the National Guideline Clearinghouse of the U.S. Department of Health and Human Services has provided a thorough summary. Below is a brief excerpt from the guideline:

Guideline Objective(s)

To assist health care providers in clinical decision-making by describing a range of generally acceptable approaches for the prevention, diagnosis, and management of heart failure

Target Population

  • Adults with chronic heart failure associated with normal or low left ventricular ejection fraction , including consideration of the following special populations:
    • Women and men
    • High-risk ethnic minority groups (e.g., blacks)
    • Elderly patients
  • Adults at high risk of developing heart failure

Initial Assessments

  1. Thorough history and physical examination, including history of current and past alcohol and drug use, orthostatic blood pressure changes, weight and height, and calculation of body mass index
  2. Assessment of ability to perform routine and desired activities of daily living
  3. Laboratory testing: complete blood count, urinalysis, serum electrolytes (including calcium and magnesium), blood urea nitrogen, serum creatinine, fasting blood glucose, lipid profile, liver function tests, and thyroid-stimulating hormone.
  4. 12-lead electrocardiography
  5. Chest radiography (PA and lateral)
  6. Two-dimensional echocardiogram coupled with Doppler flow studies
  7. Coronary arteriography in appropriate patients
  8. Maximal exercise testing with or without measurement of respiratory gas exchange and/or blood oxygen saturation in appropriate patients
  9. Screening for hemochromatosis, sleep-disturbed breathing, or human immunodeficiency virus, in selected patients
  10. Diagnostic tests for rheumatologic diseases, amyloidosis, or pheochromocytoma, if indicated
  11. Endomyocardial biopsy, when specific diagnosis is suspected that would influence therapy
  12. Holter monitoring, if indicated.

The rest of the summary can be found here.

Echocardiogram: A Diagnostic Exam

An echocardiogram is a test that creates a moving picture of the heart using sound waves. Unlike an X-ray, the picture is much more detailed and involves no radiation.

How does it work? During an echocardiogram, a sonographer uses a transducer, an instrument that transmits high-frequency waves, to place over the breast bone and directed towards the heart. The transducer picks up the echoes of the sound waves and then transmits them as electrical impulses. The impulses are then converted to moving pictures of the heart. Echocardiograms allow doctors to see many structures of the heart, as well as the beating of the heart.

There is no preparation necessary for the test. You will be asked to remove your clothes from the waist up and lie on the exam table on your back. Small electrodes will be placed on your chest to perform an EKG. Then, a gel will be applied on the chest area and the transducer will start up.

The test is performed for purposes of evaluating the heart in a noninvasive way. It allows doctors to diagnose and evaluate conditions such as heart murmurs, infections, congenital heart disease, atrial fibrillation, pulmonary hypertension, and much more.

An abnormal echocardiogram may show minor or significant signs. However, your doctor will discuss the results of your test in depth so that you are well aware of the information it provides.

Alternative names for an echocardiogram are Doppler ultrasound of the heart, or a surface echo.

Assessment of Left Ventricular Hypertrophy in Hypertension

From the Argentinian Society for Arterial Hypertension

The assessment of left ventricular hypertrophy in hypertension

Abstract
[Read more...]

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