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Interviewing Techniques as Tools for Diagnosis and Treatment, part 3 The Helpful Interview. The Practice of Medicine -1 Christine M. Peterson, M.D. Techniques as Tools.
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Interviewing Techniques as Tools for Diagnosis and Treatment, part 3The Helpful Interview The Practice of Medicine -1 Christine M. Peterson, M.D.
Techniques as Tools • Week 2: Introduction to observing, using non-verbal and verbal active listening skills, and giving feedback. [SG - Mentor Hospital Interviews] • Week 3: Practice observing, using active listening skills, and giving and receiving feedback.[SG - SP or Hospital Interviews] • Week 4: Become more “patient-centered” in the interview. [SG – Hospital or SP Interviews]
Functions of the Medical Interview • Gather data and understand it • Develop rapport and respond to emotions • Educate and motivate • Begin both diagnostic and healing processes
Techniques Are Not Results • The true endpoint of your use of techniques is the patient’s performance in the interview. • Complete (facts, concerns & requests, context) • Truthful (facts and emotions)
The Patient-Centered Interview • Focuses on the patient’s needs • Activates the patient to play a larger role • Is characterized by “active listening” • Has a positive impact on patient outcome
Review of techniques • Behavior that BEFITS a physician • FOCUS on active listening • PREP to obtain patient-centered information • REALLY PREPARE to show empathy
Issues from 3 x 5 cards • *Motivating behavior change • *Cultural (and other) differences • *Sensitive topics • *Challenging interviews / relationships • *Talking with children & parents
Issues from 3 x 5 cards • Organizing the interview (order of inquiry, keeping on track) • Time management / efficiency • Interpreting verbal and non-verbal communication • metacommunication • Dealing with emotions • Note-taking / documentation • Closing the interview • Being a beginner
Active listening • “Not really” actually means “I’m not going to tell you until I really know you’ll try to understand what I’m saying.”
Communication Behaviors of “No Claim” Primary Care Physicians • Longer visits • More orienting statements • More humor, more laughter • More facilitating comments Levinson w et al. JAMA 1997;277(7):553-9
Mc Whinney’s Taxonomy of Medical Help-Seeking Behavior • Limits of tolerance for symptom • Limits of tolerance for anxiety about symptom • Problems of living presenting as symptoms • Preventive/routine care • Administrative reasons
History of Present Illness: “O-P-Q-R-S-T” questions • Onset and circumstances of Occurrence • Provocative and Palliative factors • Quality and/or Quantity of symptom • Region of body and Radiation to other areas • Severity of symptom (0 to 10 scale, if applicable) and associated Symptoms • Time(duration) and Temporal associations
Video # 8 [doc.com]“Gather Information” Characterize the symptoms
Diagnostic information sources “Inaccurate, incomplete, or misinterpreted patient histories are among the leading causes for diagnostic errors.” Feddock C. Am J Med 2007;120(4):374-8.
A woman presents to her doctor and requests a mammogram to find out whether she has breast cancer. • Is that a good idea?
Why aren’t mammograms recommended for all women? • Expense • Reliability
How reliable is a mammogram? • If she has breast cancer, the probability that the mammogram will be abnormal is 80%. • “Sensitivity” = 80% [i.e., 80% of women with breast cancer have an abnormal mammogram, and 20% of women with breast cancer have a normal mammogram (“false negative” result) due to biology and/or interpretation.]
How reliable is a mammogram? • If she does not have breast cancer, the probability that the mammogram will be normal is 90%. • “Specificity” = 90% [i.e., 90% of normal women have a normal mammogram and 10% of healthy women have anabnormal mammogram (“false positive” result) due to biology and/or interpretation.]
Breast cancer risk varies by age Risk of breast cancer in women at current age is: • age 20: 1 in 1,837 (0.054%) • age 30: 1 in 234 (0.42%) • age 40: 1 in 70 (1.4%) • age 50: 1 in 40 (2.5%) • age 60: 1 in 28 (3.6%) • age 70: 1 in 26 (3.8%) Current entire ♀ population (20 to 80): 1 in 100 (1%) Over a lifetime: 1 in 8 (12.5%) Source: American Cancer Society Breast Cancer Facts and Figures 2007-2008
Prevalence of breast cancer • In the population as a whole what per cent of women 20 and older have breast cancer today? • 1 %
Random mammogram Positive predictive value of random mammogram = 8 / 107 = 7.5%
Interpreting mammogram results Cancer; 80% pos mammo Healthy; positive mammo Healthy; negative mammo Each box = 10 women. Mammogram sensitivity = 80%; specificity = 90. Breast cancer overall prevalence = 1% (varies with risk!)
For which women are mammograms recommended? • Risk factors: • Previous breast cancer • Genetic mutations (BrCA-1, BrCA-2) • Breast mass • Age • Etc.
Breast cancer risk varies by age Risk of breast cancer in women at current age is: • age 20: 1 in 1,837 (0.054%) • age 30: 1 in 234 (0.42%) • age 40: 1 in 70 (1.4%) • age 50: 1 in 40 (2.5%) • age 60: 1 in 28 (3.6%) • age 70: 1 in 26 (3.8%) Source: American Cancer Society Breast Cancer Facts and Figures 2007-2008
Mammogram at age 50(prevalence = 2.5%) Positive predictive value of mammogram at age 50 = 20 / 117.5 = 17%
Mammogram at age 50 with mass(prevalence ~ 50%) Positive predictive value of mammogram at age 50 with mass = 400 / 450 = 89%
A thorough history and physical exam = more accurate assessment of “prior probability” that the patient has a particular disease. • This helps guide appropriate choice and interpretation of lab and imaging tests. • And leads to better diagnosis and more effective treatment.
An accurate history and physical exam are essential for arriving at the correct diagnosis.
Patient-Centered Interview • Allows patients to express their concerns • Seeks patients’ specific requests • Elicits patients’ explanations of their illnesses • Facilitates patients’ expression of feeling • Gives patients information • Involves patients in developing a plan for evaluation and treatment • IMPROVES OUTCOME AND SATISFACTION.