Abdominal Emergencies Flashcards
3 types of pain the abdomen can experience
Visceral, somatic and referred
What is visceral pain like
Afferent nerve fibres, dull, poorly localised, can be from any area (foregut, midgut, hindgut)
What is somatic pain like
Parietal peritoneum, sharp, well localised, made worse by movement, better lying still
What causes referred pain
From nerves transmitting visceral and somatic pain
Causes of colicky pain
Intestinal obstruction
Causes of constant pain
Peritoneal irritation
Pain from small gut
More frequent pain, mid abdomen
Pain from large gut
Lower abdomen, hindgut structure, frequency of contractions reduced
What is peritonitis
It is an examination finding, where there is guarding or percussion tenderness. Can be localised or generalised
Causes of primary peritonitis
Spontaneous bacterial peritonitis
Causes of secondary peritonitis
Perforation, appendicitis
Causes of important abdominal emegencies
Ruptured AAA, cholecystitis, appendicitis, diverticulitis, ischaemic bowel, bowel obstruction, pancreatitis
Risk factors for gallstones
Fat, female, fertile, forty, family history - also weight loss, increasing age, metabolic syndrome
Consequences of gallstones
Biliary colic, cholangitis, cholecystitis, severe cholecystitis, pancreatitis
Causes of bowel obstruction
Adhesions (congenital bands, post-op, inflammatory), hernias, vovulus, intraluminal (tumour or FB), strictures (malignant - colorectal, benign - crohns)
What is a simple obstruction
One point of obstruction and no vascular compromise
What is a closed loop obstruction
2 points of obstruction such as lower bowel obstruction with competent IC valve, leading to distension and perforation
What is a stangulated obstruction
Vascular compromise, ischaemic, perforation, peritonism, fever and raised WCC