1 Good medical practice
Patients (and doctors) differ in their beliefs, attitudes and expectations. Good medical practice requires the ability to recognise and respect these individual differences. This chapter describes how to:
THE DOCTOR–PATIENT RELATIONSHIP
Regulatory bodies seek to define the duties of a doctor (e.g. Box 1.1), and many medical schools require students to sign an ethical code based on such statements.
CLINICAL AND COMMUNICATION SKILLS
Good communication is the single most important component of good practice. Failures in communication are common, and lead to poor health outcomes, strained working relations, dissatisfaction, anger and litigation among patients, their families and their carers. Some common barriers to good communication are listed in Box 1.2.
Careful questioning and listening will usually yield a provisional diagnosis, establish rapport, and determine which investigations are appropriate. The clinician must allow the patient to describe the problems with appropriate, not leading or overbearing questions. Non-verbal communication is equally important. The patient’s facial expressions and body language may betray hidden fears. The clinician can help the patient to talk more freely by smiling or nodding appropriately.
INVESTIGATIONS
THE ‘NORMAL’ RANGE
In medicine, it is also important to define results which correlate with biological disadvantage. In some diseases, there is no overlap between results from the normal and abnormal population (e.g. creatinine in renal failure). In many diseases, however, there is overlap with the normal range (e.g. thyroxine in toxic multinodular goitre). The greater the difference between the test result and the normal range, the higher the chance that the person has a disease, but results within the normal range may be ‘false negatives’ and results outside the normal range may be ‘false positives’. Similarly, when assessing quantitative risk factors, the clinical decision may not depend on whether or not the result is ‘normal’. For example, higher total cholesterol is associated with a higher risk of myocardial infarction within the normal population, and cholesterol-lowering therapy may benefit people with values within the normal range. Similar arguments may apply for blood pressure, blood glucose, bone mineral density, etc.