Pain Department of Physical Diagnostics 1st Teaching Hospital Zhengzhou University
Definition • “An unpleasant sensory and emotional experience associated with either actual or potential tissue damage, or described in terms of such damage” ---- International Association for the Study of Pain
Classification: – Dermal pain – Visceral pain – Deep pain – Referred pain
Key Notes in Interviewing of Pain • • • • • • •
Sites Character Causes Duration Radiation Accompanied symptoms Relaxing factors
Abdominal Pain
Abdominal Pain: Pathogenesis Intra-abdominal diseases
extra-abdominal
diseases
Visceral, peritoneal, or abdominal wall N.
Pain
Causes of Abdominal Pain • Diseases of abdominal organs
– Acute: inflammation, fracture, obstruction, perforation, torsion, embolism – Chronic: inflammation, viscera enlargement, obstruction, ulceration, torsion, tumor
• Diseases of extra-abdominal organs
– Thorax diseases: referred pain, pneumonia, pleuritis, myocardial infarction – General diseases: uremia, lead intoxication, Henoch-Sch Ö nlein purpura
Clinical Features • Sites: related to location of the pathological changes • Characters: lancinating, drilling, burning, colic • Onset: continuous, paroxysmal, intermittent • Radiation • Factors triggering or relieving pain: meal
Common Diseases • Acute appendicitis
– Pain is initially localized around the umbilicus (visceral pain) and is vague; As the inflammatory response progresses to involve the parietal peritoneum, the main site of pain shifts to the right iliac fossa (parietal or somatic pain) – Usually accompanied by fever
Peptic Ulcer • Periodical burning pain in epigastrium • Pain is associated with meal – May be accompanied by hematemesis or melena
Acute Gastric Perforation • Outburst acute severe lancinating pain in umbilical region or epigastrium
Acute ileus • Vomiting • Cramping Abdominal pain • distension • obstipation
Ureter Calculi • Paroxysmal abdominal pain • Referred pain to the groin area of the same side • Hematuria
Acute pancreatitis • Continuous severe pain in umbilical region or epigastrium, paroxysmally enhanced • Associated with meal, esp. heavy drinking
Chest Pain
Causes Esophagus Chestwall
Mediastinum
Pleura
Lung
subphrenic
Heart
Angina pectoris
pleuritis
esophagitis
Site
Pre-cardial
Affected chest Post-sternal
Radiation
L shoulder & arm
No
No
Character
anginal
lacerating
burning
Duration
Several mins
days
weeks
Causes
Excitement, labouring
cough
meal
Relieving
nitroglycerin
Position?
Antacid
Accompany symptoms
Chest distress, Fever, cough Swallowing palpitation discomfort
Dyspnea
Causes • Pulmonary:
– Inspiratory – Expiratory – Mixed
• Cardiac • Toxic • Other:
– Hysterical – hemopathic
Pulmonary Dyspnea • Inspiratory dyspnea • Mechanism: narrowing of larynx or large airway • Features: – Difficult in taking in air – Prolonged inspiration phase – May be accompanied by “three depressions sign” and stridor in inspiration phase
Pulmonary Dyspnea • Expiratory dyspnea • Mechanisms:
– Decreased elasticity of the lung tissue – Narrowing of bronchiole – Bronchioles are pressed in inspiration phase
• Features:
– Difficult in expirate – Prolonged expiration phase – Too much air trapped in the lung
Pulmonary Dyspnea • Mixed: – Mechanisms: • Generalized lesion in the lung • Restricted dilatation of the alveoli due to the thickness of the chest wall and pleura
– Features: • Difficult in inpirate and expirate • Tachypnea • Abnormal breath sounds or adventitious sounds
Cardiac dyspnea • Mechanisms:
– Congestion and decreased compliance of the lung mainly due to left heart insufficiency
• Features:
– Worsen by exertion, relieved by rest – Nocturnal paroxysmal dyspnea – “Cardiac asthma” : large amount of pink frothy sputum, fine rales in both lung fields, relieved by sitting position
Nocturnal Paroxysmal dyspnea
•
Causes: – – – – – –
Ischaemic heart disease Aortic valve disease Hypertension Cardiomyopathy Atrial fibrillation Rarely in mitral valve disease or atrial tumours
Toxic Dyspnea • Mechanism1: respiratory centre is activated by acidosis – Clinical feature: Kussmaul respiration
• Mechansim2: respiratory centre is inhibited by drugs or other illness – Clinical feature: Cheyne-Stokes respiration and Biots respiration
Hysterical Dyspnea • Mechanism: hyperventilation syndrome caused by stimulating of the respiration centre by psychic factor • Feature: – Tachypnea – May be accompanied by numbness of the lips , numbness and convulsion of the four extremities. – Psychic or mental factors exist – Dyspnea may be relived by psychotherapy
Hemoptysis and hematemesis
Definitions • Hemoptysis: the expectoration of any blood, regardless of whether the sputum is grossly bloody or merely blood streaked • Hematemesis: efflux of blood from the GI tract, usually bright red or “coffee-ground” material is vomited
Differences Between Hemoptysis and Hematemesis Causes
Hemoptysis
Hematemesis
Heart or lung dis.
Gastrointestinal , hepatic, biliary tract dis.
Pre-bleeding symptoms bleeding
Itching in the throat, Discomfort in the upper abdomen, nausea, vomitting cough Bright red Coffee-ground, dark or bright red Material in blood Sputum Food residue pH
alkaline
acid
melena
No (unless blood is swallowed) Blood streaked
Yes
Sputum after bleeding
No