EPIDEMIOLOGY. General Prevalence of Acute Pain Lifetime prevalence in general population: –...
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EPIDEMIOLOGY
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General
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Prevalence of Acute Pain
• Lifetime prevalence in general population:– Approaches 100% for acute pain leading to use
of analgesics1
• Emergency room patients:– Pain accounts for >2/3 of emergency room
visits2
• Hospitalized patients: – >50% report pain3
1. Diener HC et al. J Headache Pain 2008; 9(4):225-31; 2. Todd KH, Miner JR. In: Fishman SM et al (eds). Bonica’s Management of Pain. 4th ed. Lippincott, Williams and Wilkins; Philadelphia, PA: 2010; 3. Dix P et al. Br J Anaesth 2004; 92(2):235-7.
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Acute Pain in General Practice
Hasselström J et al. Eur J Pain 2002; 6(5):375-85.
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Most Common Types of Pain in General Practice
Note: types of pain are based on ICD-9 codes*The use of the symptom code suggests clinician could not identify the underlying cause of the pain**MSK – other refers to musculoskeletal pain at sites other than the neck, back or soft tissueICD = International Classification of Disease; MSK = musculoskeletalHasselström J et al. Eur J Pain 2002; 6(5):375-85.
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Post-operative Acute Pain is the Most Prevalent Type of Pain in the US
US = United States1. Lipton JA et al. J Am Dent Assoc 1993; 124(10):115-21; 2. Apfelbaum L et al. Anesth Analg 2003; 97(2):534-40; 3. Nawar EW et al. Adv Data 2007; 29(386):1-32.
22
80
46
0%
20%
40%
60%
80%
100%
Dental Post-operative Emergency department
Prev
alen
ce (%
)
1 2 3
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Post-operative Pain
*Depending on type of surgeryColey KC et al. J Clin Anesth 2002; 14(5):349-53; Institute of Medicine. Relieving Pain in America: A Blueprint for Transforming Prevention, Care, Education, and Research. The National Academies Press; Washington, DC: 2011.
80% of patients undergoing surgery experience post-operative pain
<50% report adequate pain relief
88% of these report the pain is moderate, severe or extreme
10–50% develop chronic pain*
For 2–10% of these, pain is severe
Pain accounts for 38% of unanticipated admissions and readmissions following ambulatory surgery
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Chronic Pain as an Outcome of Surgery
Surgery Incidence Factors
Limb amputation 30–81% Pre-amputation pain, persistent stump pain
Thoracotomy 47 % Extent of acute post-operative pain, intercostal nerve dysfunction
Breast surgery 11–57%Extent of acute post-operative pain, type of surgery, intercostobrachial nerve injury
Gallbladder surgery 3–56% Psychologic vulnerability, long-standing pre-operative symptoms
Inguinal hernia 11% Intensity of early post-operative pain, nerve dysfunction
Perkins FM, Kehlet H. Anesthesiology 2000; 93(4):1123-33.
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Some Surgical Procedures are Associated with a High Estimated Incidence of Chronic Post-operative Pain
*Lumpectomy or mastectomyKehlet H et al. Lancet 2006; 367(9522):1618-25.
0 10 20 30 40 50 60
Inguinal hernia repair
Caesareansection
Breast surgery*
Thoracotomy
Amputation
Coronary arterybypass surgery
% of patients
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Summary
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Epidemiology of Acute Pain: Summary
• Acute pain is experienced by:– 10% of patients presenting to primary care– >50% of hospitalized patients– 2/3 of patients in ER– 80% of patients following surgery
ER = emergency room