Physical examination

Template:TOC-right In health care, the physical examination is a "systematic and thorough inspection of the patient for physical signs of disease or abnormality."

Usually, the physical examination is preceded by eliciting the patient's chief complaint and medical history as these help direct the examiner's attention.

The physical examination is an important part of the physician-patient relationship. It often helps the patient-physician relationship by being one of the few continuations of the "laying on of hands."

Approaches to the physical examination

There are several ways to perform a basic review. In the "regional" approach, the patient is placed in a series of positions suitable for specific examination methods. For example, several different methods, focused differently on the heart and lungs, might be most conveniently done together while the patient is sitting and facing the examiner.

In the system-oriented approach, which may be slower but preferable when the examination is focused on a specific system, the examiner moves from position to position while focusing on one system at a time. This may encourage concentration on a system.

Regional method

The regional method can begin when the patient walks into the room, or is asked to walk across it.

Standing and walking

An examination often begins with taking the height and weight if this has not been done; this also gives the examiner to observe the patient's walking gait, apparent balance, and other movement-related signs.

Seated

A wide number of observations will be taken in a seated position. Depending on the layout of the examining room, the preference of the examiner, and the comfort of the patient, it may be useful to do some of these while the patient is in a chair, perhaps after the history has been taken from the comfortably seated patient. Some procedures, however, are best done when the patient is seated on the edge of the examining table, so it is simple to move between the patient's front and back. In the chair, a starting point is taking basic vital signs, , inspection of the face including fundoscopic viewing of the eyes and otoscopic viewing of the ears, etc.

Auscultation of the chest is usually easier with the patient sitting on the table, since the examiner will listed from the front and back. Examples of other tests conveniently done in this position include the patellar reflex, examination of the feet and ankles (e.g., skin state, edema, skin sensitivity such as testing for stocking and glove paresthesia).

Supine

When the patient is supine, this is the usual time to palpate the abdomen, testing the effect of leg raising in terms of range of motion and specific reactions such as Kernig's and Brudzinski's signs, etc.

System-oriented

This section deals with the level appropriate for a general examination. A focused neurological or pulmonary examination, for example, will involve many more specialized examining techniques, and perhaps instrumental tests done in the examining room.

Methods of the physical examination

For links to more information, see: Physical examination: Subtopics

Auscultation

Auscultation is the "act of listening for sounds within the body." Auscultation helps assess respiratory sounds, heart sounds, and heart murmurs.

Palpation

Palpation is the "application of fingers with light pressure to the surface of the body to determine consistence of parts beneath in physical diagnosis; includes palpation for determining the outlines of organs."

Percussion

Percussion is the "act of striking a part with short, sharp blows as an aid in diagnosing the condition beneath the sound obtained."

Research on the accuracy of the physical examination

Guidelines have been proposed for reporting research on the physical examination.

History of the physical examination

Auscultation prior to the stethoscope.

Walker has compiled the following dates in the development of the techniques for the physical examination.

1. Hippocrates: A Rational Profession 460–370 b.c
2. Vesalius: Establishment of an Accurate Anatomy, 1543
3. Sydenham: The Nosology of Disease, 1666
4. Morgagni: The Foundation of Pathologic Anatomy, 1761
5. Auenbrugger: The Discovery of Percussion, 1761
6. Laennec: The Stethoscope and elaboration of the methods of auscultation 1816
7. Helmholtz: The ophthalmoscope, 1850
8. Carl Wunderlich: The thermometer, 1871
9. Erb and Westphal: The reflex Hammer, 1875
10. Riva Rocci: The Sphygmomanometer for measuring blood pressure, 1896

Evolution in mainstream medicine

While some of these innovators created fundamentally new ideas, the actual form of the technique may have changed substantially over the years. Some are matter of improving a device, for convenience of use, safety, or more efficient manufacturing. Early practical sphygnomanometers were built around a glass tube of mercury, but that is fragile, expensive, and both broken glass or spilled mercury are health hazards. Opthalmoscopes originally reflected a light, but even basic opthalmoscopes today use internal lamps, with specialized opthalmoscopes (e.g., the slit lamp) having more advanced optics.

In other cases, laboratory testing or medical examination have, at least, complemented the original methods. The stethoscope remains a basic symbol of the examination, but the finding of preliminary abnormalities is sensitive but not selective. Particular sounds, such as rales and rhonchi from the chest, or a heart murmur, call for such studies as X-ray or ultrasonography.

There is, indeed, mainstream opinion that some patients would better be served by more thought about the results of the medical history and physical examination, rather than overdependence on technology. A widespread aphorism among medical educators is "treat the patient, not the chart." Imaging may produce false positives and false negatives, so that the patient is subjected to an unneeded treatment risk or fails to receive treatment for a real disorder not detected by the particular imaging technique; especially among specialists in trauma, the concern over overdependendce created the informal term VOMIT: Victim of Modern Imaging Technology.

Examining techniques in complementary medicine

Some traditional and complementary disciplines, such as traditional Chinese medicine, often combine traditional and contemporary examination techniques. Chinese manual "pulse diagnosis" uses three fingers over the radial artery of the both wrists, applying different amounts of pressure in an effort to get a sense of the different qualities of the pulse as well as the heart rate. Western methods might instead use amplified or Doppler instruments, plesthymography, etc. Cardiologists and other specialists also will supplement basic pulse-taking with positional changes and different hand/probe positioning.

External links

• The Rational Clinical Examination Series. This is a series of systematic reviews published in the Journal of the American Medical Association of topics in medical history taking and physical examination.