A full physical examination is a general examination of the body performed by the doctor or general practitioner (GP). The examination will cover most of the basic systems of the body, including the heart system, lung system, gut system and nerve system examination. An additional examination can be added depending on the clinical scenarios. The purposes of a full physical examination are to confirm any present issues after the clinical history and to find possible pathologies that are present but yet to be known about.
Clinical history and physical examination are the essential part of medicine since Western medicine was established centuries ago. However, with the advance of technological investigations, many diseases are diagnosed with blood tests and imaging studies. Many diseases are diagnosed earlier using modern technology where previously physical examination could find nothing, for example, prostate cancer, colon cancer, etc.
Yet quoting the Medical Journal of Australia Editorials, on “Physical examination: bewitched, bothered and bewildered”, it states that: “Together with the history, a physical examination is the doctor’s best-kept secret – powerful, portable, fast, cheap, durable, reproducible and fun … We recommend a thorough check-up. Preferably by a doctor who takes the time to look, listen, even touch.” This shows how important physical examination is in medical practice.
What happens during a physical examination?
Before a physical examination is carried out, the doctor will ask for consent from the patient. If the patient is of a different gender from the doctor, a chaperone may be needed (especially when a male doctor examines a female patient). Usually, some parts of the body will need to be exposed, and permission is obtained as well.
The physical examination usually starts with the vital signs, and that includes the heart rate, blood pressure, respiratory rate, and temperature.
Generally, there are 4 parts of physical examination:
Inspection: looking for signs
Palpation: feeling for signs
Percussion: tapping for signs, used when doing a lung and/or gut examination.
Auscultation: listening using the stethoscope, or in olden times, purely listening with the direct ear.
Not all of these will be present in the systems examination but most will do.
Depending on the training of the doctor, the sequence of the systems covered may be different. However, all physical examinations strive to determine more about the present disease the patient has, or possible diseases that are yet to be diagnosed.
During the physical examination, the doctor strives to keep the patient as comfortable as possible. However, sometimes tender spots need to be touched and examined for accurate or reliable diagnosis.
After the physical examination, the patient will be asked to dress, and then the doctor will tell the patient the clinical findings. Coupled up with clinical history, the doctor will either proceed to investigations or manage the disease based on these 2 alone.
Aside from some discomfort for some patients, physical examination usually have no severe risks.
Because physical examination is low cost (only the cost of expertise is needed), non-invasive (ie. not entering the body cavity in any way) and potentially revealing, they are recommended as screening tests for certain diseases such as breast cancer, skin cancer, and even prostate cancer. These screening tests need to be done in conjunction with the patient’s respective clinical histories, hence they need to be discussed with the doctor.