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ACUTE ABDOMEN
Krithika Muthukrishnan (B2356)
Definition
•The term acute abdomen refers to a sudden, severe
abdominal pain of unclear etiology that is less than 24
hours in duration.
• It is in many cases a medical / surgical (non trauma)
emergency, requiring urgent and specific diagnosis.
•Several causes need surgical treatment.
Epidemiology
•Can be trivial or life threatening
•About 10-15% of Casualty visit
•Almost 40% of them need surgical intervention
•The challenge we face here : - Misdiagnosis, Atypical
presentation, and mortality if given wrong treatment
The Physiology Of Abdominal Pain
•There are three types of Abdominal pain :
Visceral Pain, Somatic (Parietal) Pain and Referred Pain
•Several factors modify the expression of pain
•Extremes of age, pain tolerance
•Vascular compromise (pain out of proportion)
•Pregnancy / CNS pathology / Neutropenia
Visceral pain
•Deep, Dull, Aching or Cramping and poorly localised
•Stimulated by Stretching, Distension or Contractions of
the gut or other hollow abdominal organ
•Traction on the bowel mesentry
•Inflammation or Ischemia
•Usually felt in the midline, unaccompanied by tenderness
Parietal (Somatic) Pain
•Sharper and better localised and easily described
•Aggravated by Stimulation or Irritation of the parietal
peritoneum with movement, coughing or walking
•Cardinal signs : Pain, Guarding, Rebound and Absent
bowel sounds
•A true parietal pain is the Surgical cause of abdominal
pain
Referred Pain
•Pain felt over the site other than that of the primary noxious
stimulus
•Occurs in an area supplied by the same neurosegment as the
involved organ
•Most visceral pain is of this type
•Its usually intense and most often secondary to an inflammatory
lesion
•Eg: Subdiaphragm – shoulder pain / Biliary tract – right shoulder
pain / Small bowel – back pain / Appendicitis – Umbilical region
Acute Abdomen Ppt
Differential Diagnosis By
Location
Acute Abdomen Ppt
Epigastrium
•Acid / Peptic Disease (Ulcer, GERD, Gastritis)
•Angina / Myocardial Infarction
•Aortic Aneurism Cholelithiasis, Choledocholithiasis
•Diaphragmatic Defect (Acquired / Congenital) & Hernias
•Paraesophageal Hernia, Gastric Volvulus, Perforated Oesophagus
•Gastroenteritis, Pancreatitis
•Carcinoma ( Gastric / Pancreatic / etc…)
Right Upper Quadrant
• Cholelithiasis, Choledocholithiasis
•Liver Related ( Hepatitis / Hepatomegaly / Abcess /
Malignancy)
• Renal Related ( Pyelonephritis / Nephrolithiasis /
Ureterolithiasis )
• Sub-diaphragmatic Abscess
•Appendicitis ( Reterocecal / Malrotated)
• Right side Pneumonia
Left Upper Quadrant
•Pancreas Related ( Pancreatitis / Malignancy)
•Gastric Ulcer / Intestinal Obstruction / Mesentric Thrombosis
•Colonic Ischemia / Perforation
•Spleen Related (Infarct/ Rupture/ Abcess)
•Renal Related (Pyelonephritis/ Nephrolithiasis/ Ureterolithiasis)
•Subdiaphragmatic Abscess
•Left side Pneumonia
Peri-Umbilical / Mid-Abdomen
Aortic Aneurysm
Appendicitis
Small Bowel Obstruction
Ischemia (Interstinal Angina)
Gangrene
Right / Left Lower Quadrant
•Appendicitis ( only for right lower quadrant)
•Colon Related - Colitis (Ulcerative / Pseudo Membranous) /
Diverticulitis (Meckel’s) / Carcinoma / Perforated Caecum /
Colonic Ischemia
•Sigmoid Volvulus / Diverticulitis ( only for left lower quadrant)
•Crohn’s Disease
•Hernia ( Inguinal / Femoral / Incarcerated)
•Psoas Abscess
•Mesentric Adenitis (Ctd..)
RLQ & LLQ Continued…
• Renal Related - Pyelonephritis / Nephrolithiasis / Ureterolithiasis
• Gynaecological :
Ruptured Ectopic (Tubal) Pregnancy / Ovarian Tortion /
Cyst / PID / Tubo ovarian pathologies / Infections /
Abcess / Endometriosis / Salpingitis / Malignancies / etc…
• Typhilitis
• Rectus / Retroperitoneal Hematomas
Supra – Pubic Region
Urinary Tract Infection
Diverticulitis
Gynecological - Endometriosis, Endometritis,
Pelvic Inflammatory Disease
Prostitis
Important Extra Abdominal Causes Of
Abdominal Pain
• Systemic Causes:
• Diabetic Ketoacidosis
• Alcoholic Ketoacidosis
• Uremia
• Sickle cell disease
• Porphyria (Acute
Intermittent)
• SLE
• Vasculitis
• Acute Leukemia
• Hyperthyroidism
• Addisonian crisis
• Abdominal Wall :
• Muscle Spasm
• Muscle Hematoma
• Herpes Zoster
• Thoracic :
• Myocardial Infarction
• Unstable Angina
• Pneumonia
• Pulmonary Embolism
• Herniated Thoracic Disc (Neuralgia)
Continued….
• Genito – Urinary :
• Testicular Tortion
• Renal Colic
• Infectious / parasitic :
• Tuberculosis
• Streptococcal infections
• Infectious Mononucleosis
• Malaria / Dengue /
Chikungunya
• Hydatid cysts, Worm
infestations
• Toxic:
• Methanol Poisoning
• Narcotic Withdrawal
• Volatile drugs / substance
abuse
• Scorpion Bite
• Black widow spider bite
• Other poisons
History Of Presenting Illness
•Pain : When? Where? How?
•Onset : Abrupt / Gradual / How often / How Long?
•Character : Dull / Sharp / Burning / Steady / Intermmitant
•Radiation / Quality / Severity / Timing
•Previous Occurrence
•Accompanied by: Vomiting, Nausea, Anorexia
•Aggravating and Relieving factors
Acute Abdomen Ppt
High Yield Questions
What is your Age? : Advanced age means more risk
Describe the position, character and migration of the pain :
• Sudden coupled with weakness or fainting / Less acute but still abrupt onset /
began gradually and maximised slowly
• Is the pain constant or intermittent? ( constant pain is worse)
• Have you had it before? ( no prior episodes is worse )
• Did the pain start centrally and migrate to the right lower side? (Appendicitis)
Have you noticed specific aggravating or relieving factors? ( eating/
defecation/ flatus/ movement/ exercise/ coughing….)
Have you ever had abdominal surgery before? ( consider obstruction /
adhesions / rupture / volvulus / destention/ perforation in patients who
report prior surgery)
• Do you have nausea, vomiting, diarrhoea, change in colour or blood in
stool, any disturbed bowel movement? Any sleep disturbances? Poor
appetite?
• Do you have HIV? ( consider occult or unusual infection )
More questions….
• How much alcohol do you drink per day? ( consider pancreatitis,
hepatitis or cirrhosis) when was your last meal?
• Are you pregnant? ( test for pregnancy – consider ectopic
pregnancy) menstrual history, sexual exposure (history for STD)
• Are you taking any antibiotics or steroids? ( may mask infections)
• Do you have any history of vascular or heart disease,
hypertension or atrial fibrillation? ( consider mesenteric ischemia/
myocardial ischemia/ aortic aneurysm)
Physical Examination
• Overall appearance : Facial expression, diaphoresis, pallor, mental status and
degree of agitation
• Position: Sitting, recumbent or constantly moving around
• Vitals : Temperature (< 97F or >101F – consider abdominal sepsis),
Tachycardia, Hypotension
• Inspection : Scars, hernias, distention, discolouration or visible masses
• Auscultation: Hyper active or hypo active bowel sounds, silent BS or pulsatile
bruit, borborygmi (stomach rumble)
• Percussion: Dull (fluid filled) / shifting dullness / liver or spleen dullness
Continued….
Palpation:
•Tenderness
 Rigidity and guarding
 Board like abdomen
Rebounding pain
•Rectal digital examination
•Per vaginal examination
Careful examination of Heart, Lung and Skin
Lab Investigations
• Complete blood count (including differentials, ESR, CRP, platelet count,
peripheral smear) & Blood Culture
• BUN, Creatinine, Serum electrolytes ( sodium, potassium, bicarbonate)
• Complete urinalysis (with culture)
• Beta HCG – woman of child bearing age
• LFT – Bilirubin, ALP, ALT, AST, GGT – for RUQ pain & jaundice
• Amylase, Lipase – for epigastralgia
• PT, APTT, bleeding time, clotting time
• ECG, CK – epigastralgia with aged patient
Diagnostic Imaging
• X-Ray – Standing CXR, upright and supine Abdominal X-ray ( helpful for
obstruction – free air visible)
• X-ray KUB – for Calcifications, air fluid levels, reactive bowel patterns.
Foreign bodies
• Ultrasound : rapid, safe & low cost, shows fluid, inflammation, air in walls,
masses, better for specific injuries( appendix, spleen, liver, gall bladder, CBD,
pancreas, kidney, aneurysm, prostate, ovaries, uterus and other pathologies)
• CT Scan: useful for diagnosis of bowel obstruction, diverticulitis, colitis,
sepsis, abscess, free air, vessels, malignancies and ischemic bowel (gold standard
for acute pancreatitis/ appendicitis) and other fishing expeditions as its better
for a more generalised abdominal survey …
Other specialised testing….
•Radiographic: Nuclear medicine ( for
malignancies), Angiography (for ischemic
bowel/aneurysms), etc…
•Endoscopy : used judiciously
•Laparoscopy : Diagnostic and Treatment
•Exploratory Laparotomy
Identifying High Risk Patients
• Elderly > 65years
• S/S of Shock, clammy patient, pallor,
fainting
• Peritoneal signs
• Silent bowel sound
• Pulsatile mass
• Refractory pain post Rx
• Immunocompromised
• Women of child bearing age
• Elevation of Band WBC
• High grade fever
• Hypothermia
• Hypotension, Tachycardia –
Spleen, aortic rupture, ectopic
pregnancy, ruptured ovarian cyst
• Acute Renal Failure
• Non post surgical obstruction
Acute Abdomen Ppt
Peritonitis
•Primary : caused by spontaneous bacterial seeding
from states such as cirrhosis. No GI leak.
•Secondary: caused by GI / GU leak ( PID, ulcer
rupture, etc..)
•Tertiary: Secondary turning into chronic infection
after closure of the leak.
Immediate Management
• Immediate insertion of a large bore IV and start with rather Saline or Ringer Lactate
solution (for fluid and electrolyte correction)
• IV / IM pain medication / Analgesics (Pro: can get more accurate history and do
examination / Con: Surgeons don’t suggest it and prefer consultation immediately)
• Nasogastric tube if vomiting or concerned about obstruction
• Foley’s catheter to follow hydration status and to obtain urinalysis
• Antibiotic administration if suspicious of inflammation or perforation
• Definitive treatment or procedure (varies with diagnosis)
• Reassess patient on a regular basis and Refer to concerned surgeon when indicted.
When to Operate – Surgical consult
•Peritonitis : Excluding primary peritonitis
•Abdominal pain + Tenderness + Sepsis + Shock
•Acute Intestinal Ischemia
•Pneumoperitoneum / Hemoperitoneum
•Exclude Pancreatitis
•Operable Tumour / Malignancies
When not to operate….
• Cholangitis
• Appendicial abscess
• Acute diverticulitis + abscess
• Acute pancreatitis / hepatitis
• Ruptured ovarian cyst
• Long standing perforated
ulcer
• Diabetic ketoacidosis
• Myocardial infarction, acute
pericarditis
• Pulmonary infarction, pneumonia
• GE reflux, adrenal insufficiency
• Acute porphyria
• Rectus muscle hematoma
• Pyelonephritis, sickle cell crisis
THANK YOU…!!!

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Acute Abdomen Ppt

  • 2. Definition •The term acute abdomen refers to a sudden, severe abdominal pain of unclear etiology that is less than 24 hours in duration. • It is in many cases a medical / surgical (non trauma) emergency, requiring urgent and specific diagnosis. •Several causes need surgical treatment.
  • 3. Epidemiology •Can be trivial or life threatening •About 10-15% of Casualty visit •Almost 40% of them need surgical intervention •The challenge we face here : - Misdiagnosis, Atypical presentation, and mortality if given wrong treatment
  • 4. The Physiology Of Abdominal Pain •There are three types of Abdominal pain : Visceral Pain, Somatic (Parietal) Pain and Referred Pain •Several factors modify the expression of pain •Extremes of age, pain tolerance •Vascular compromise (pain out of proportion) •Pregnancy / CNS pathology / Neutropenia
  • 5. Visceral pain •Deep, Dull, Aching or Cramping and poorly localised •Stimulated by Stretching, Distension or Contractions of the gut or other hollow abdominal organ •Traction on the bowel mesentry •Inflammation or Ischemia •Usually felt in the midline, unaccompanied by tenderness
  • 6. Parietal (Somatic) Pain •Sharper and better localised and easily described •Aggravated by Stimulation or Irritation of the parietal peritoneum with movement, coughing or walking •Cardinal signs : Pain, Guarding, Rebound and Absent bowel sounds •A true parietal pain is the Surgical cause of abdominal pain
  • 7. Referred Pain •Pain felt over the site other than that of the primary noxious stimulus •Occurs in an area supplied by the same neurosegment as the involved organ •Most visceral pain is of this type •Its usually intense and most often secondary to an inflammatory lesion •Eg: Subdiaphragm – shoulder pain / Biliary tract – right shoulder pain / Small bowel – back pain / Appendicitis – Umbilical region
  • 11. Epigastrium •Acid / Peptic Disease (Ulcer, GERD, Gastritis) •Angina / Myocardial Infarction •Aortic Aneurism Cholelithiasis, Choledocholithiasis •Diaphragmatic Defect (Acquired / Congenital) & Hernias •Paraesophageal Hernia, Gastric Volvulus, Perforated Oesophagus •Gastroenteritis, Pancreatitis •Carcinoma ( Gastric / Pancreatic / etc…)
  • 12. Right Upper Quadrant • Cholelithiasis, Choledocholithiasis •Liver Related ( Hepatitis / Hepatomegaly / Abcess / Malignancy) • Renal Related ( Pyelonephritis / Nephrolithiasis / Ureterolithiasis ) • Sub-diaphragmatic Abscess •Appendicitis ( Reterocecal / Malrotated) • Right side Pneumonia
  • 13. Left Upper Quadrant •Pancreas Related ( Pancreatitis / Malignancy) •Gastric Ulcer / Intestinal Obstruction / Mesentric Thrombosis •Colonic Ischemia / Perforation •Spleen Related (Infarct/ Rupture/ Abcess) •Renal Related (Pyelonephritis/ Nephrolithiasis/ Ureterolithiasis) •Subdiaphragmatic Abscess •Left side Pneumonia
  • 14. Peri-Umbilical / Mid-Abdomen Aortic Aneurysm Appendicitis Small Bowel Obstruction Ischemia (Interstinal Angina) Gangrene
  • 15. Right / Left Lower Quadrant •Appendicitis ( only for right lower quadrant) •Colon Related - Colitis (Ulcerative / Pseudo Membranous) / Diverticulitis (Meckel’s) / Carcinoma / Perforated Caecum / Colonic Ischemia •Sigmoid Volvulus / Diverticulitis ( only for left lower quadrant) •Crohn’s Disease •Hernia ( Inguinal / Femoral / Incarcerated) •Psoas Abscess •Mesentric Adenitis (Ctd..)
  • 16. RLQ & LLQ Continued… • Renal Related - Pyelonephritis / Nephrolithiasis / Ureterolithiasis • Gynaecological : Ruptured Ectopic (Tubal) Pregnancy / Ovarian Tortion / Cyst / PID / Tubo ovarian pathologies / Infections / Abcess / Endometriosis / Salpingitis / Malignancies / etc… • Typhilitis • Rectus / Retroperitoneal Hematomas
  • 17. Supra – Pubic Region Urinary Tract Infection Diverticulitis Gynecological - Endometriosis, Endometritis, Pelvic Inflammatory Disease Prostitis
  • 18. Important Extra Abdominal Causes Of Abdominal Pain • Systemic Causes: • Diabetic Ketoacidosis • Alcoholic Ketoacidosis • Uremia • Sickle cell disease • Porphyria (Acute Intermittent) • SLE • Vasculitis • Acute Leukemia • Hyperthyroidism • Addisonian crisis • Abdominal Wall : • Muscle Spasm • Muscle Hematoma • Herpes Zoster • Thoracic : • Myocardial Infarction • Unstable Angina • Pneumonia • Pulmonary Embolism • Herniated Thoracic Disc (Neuralgia)
  • 19. Continued…. • Genito – Urinary : • Testicular Tortion • Renal Colic • Infectious / parasitic : • Tuberculosis • Streptococcal infections • Infectious Mononucleosis • Malaria / Dengue / Chikungunya • Hydatid cysts, Worm infestations • Toxic: • Methanol Poisoning • Narcotic Withdrawal • Volatile drugs / substance abuse • Scorpion Bite • Black widow spider bite • Other poisons
  • 20. History Of Presenting Illness •Pain : When? Where? How? •Onset : Abrupt / Gradual / How often / How Long? •Character : Dull / Sharp / Burning / Steady / Intermmitant •Radiation / Quality / Severity / Timing •Previous Occurrence •Accompanied by: Vomiting, Nausea, Anorexia •Aggravating and Relieving factors
  • 22. High Yield Questions What is your Age? : Advanced age means more risk Describe the position, character and migration of the pain : • Sudden coupled with weakness or fainting / Less acute but still abrupt onset / began gradually and maximised slowly • Is the pain constant or intermittent? ( constant pain is worse) • Have you had it before? ( no prior episodes is worse ) • Did the pain start centrally and migrate to the right lower side? (Appendicitis)
  • 23. Have you noticed specific aggravating or relieving factors? ( eating/ defecation/ flatus/ movement/ exercise/ coughing….) Have you ever had abdominal surgery before? ( consider obstruction / adhesions / rupture / volvulus / destention/ perforation in patients who report prior surgery) • Do you have nausea, vomiting, diarrhoea, change in colour or blood in stool, any disturbed bowel movement? Any sleep disturbances? Poor appetite? • Do you have HIV? ( consider occult or unusual infection )
  • 24. More questions…. • How much alcohol do you drink per day? ( consider pancreatitis, hepatitis or cirrhosis) when was your last meal? • Are you pregnant? ( test for pregnancy – consider ectopic pregnancy) menstrual history, sexual exposure (history for STD) • Are you taking any antibiotics or steroids? ( may mask infections) • Do you have any history of vascular or heart disease, hypertension or atrial fibrillation? ( consider mesenteric ischemia/ myocardial ischemia/ aortic aneurysm)
  • 25. Physical Examination • Overall appearance : Facial expression, diaphoresis, pallor, mental status and degree of agitation • Position: Sitting, recumbent or constantly moving around • Vitals : Temperature (< 97F or >101F – consider abdominal sepsis), Tachycardia, Hypotension • Inspection : Scars, hernias, distention, discolouration or visible masses • Auscultation: Hyper active or hypo active bowel sounds, silent BS or pulsatile bruit, borborygmi (stomach rumble) • Percussion: Dull (fluid filled) / shifting dullness / liver or spleen dullness
  • 26. Continued…. Palpation: •Tenderness  Rigidity and guarding  Board like abdomen Rebounding pain •Rectal digital examination •Per vaginal examination Careful examination of Heart, Lung and Skin
  • 27. Lab Investigations • Complete blood count (including differentials, ESR, CRP, platelet count, peripheral smear) & Blood Culture • BUN, Creatinine, Serum electrolytes ( sodium, potassium, bicarbonate) • Complete urinalysis (with culture) • Beta HCG – woman of child bearing age • LFT – Bilirubin, ALP, ALT, AST, GGT – for RUQ pain & jaundice • Amylase, Lipase – for epigastralgia • PT, APTT, bleeding time, clotting time • ECG, CK – epigastralgia with aged patient
  • 28. Diagnostic Imaging • X-Ray – Standing CXR, upright and supine Abdominal X-ray ( helpful for obstruction – free air visible) • X-ray KUB – for Calcifications, air fluid levels, reactive bowel patterns. Foreign bodies • Ultrasound : rapid, safe & low cost, shows fluid, inflammation, air in walls, masses, better for specific injuries( appendix, spleen, liver, gall bladder, CBD, pancreas, kidney, aneurysm, prostate, ovaries, uterus and other pathologies) • CT Scan: useful for diagnosis of bowel obstruction, diverticulitis, colitis, sepsis, abscess, free air, vessels, malignancies and ischemic bowel (gold standard for acute pancreatitis/ appendicitis) and other fishing expeditions as its better for a more generalised abdominal survey …
  • 29. Other specialised testing…. •Radiographic: Nuclear medicine ( for malignancies), Angiography (for ischemic bowel/aneurysms), etc… •Endoscopy : used judiciously •Laparoscopy : Diagnostic and Treatment •Exploratory Laparotomy
  • 30. Identifying High Risk Patients • Elderly > 65years • S/S of Shock, clammy patient, pallor, fainting • Peritoneal signs • Silent bowel sound • Pulsatile mass • Refractory pain post Rx • Immunocompromised • Women of child bearing age • Elevation of Band WBC • High grade fever • Hypothermia • Hypotension, Tachycardia – Spleen, aortic rupture, ectopic pregnancy, ruptured ovarian cyst • Acute Renal Failure • Non post surgical obstruction
  • 32. Peritonitis •Primary : caused by spontaneous bacterial seeding from states such as cirrhosis. No GI leak. •Secondary: caused by GI / GU leak ( PID, ulcer rupture, etc..) •Tertiary: Secondary turning into chronic infection after closure of the leak.
  • 33. Immediate Management • Immediate insertion of a large bore IV and start with rather Saline or Ringer Lactate solution (for fluid and electrolyte correction) • IV / IM pain medication / Analgesics (Pro: can get more accurate history and do examination / Con: Surgeons don’t suggest it and prefer consultation immediately) • Nasogastric tube if vomiting or concerned about obstruction • Foley’s catheter to follow hydration status and to obtain urinalysis • Antibiotic administration if suspicious of inflammation or perforation • Definitive treatment or procedure (varies with diagnosis) • Reassess patient on a regular basis and Refer to concerned surgeon when indicted.
  • 34. When to Operate – Surgical consult •Peritonitis : Excluding primary peritonitis •Abdominal pain + Tenderness + Sepsis + Shock •Acute Intestinal Ischemia •Pneumoperitoneum / Hemoperitoneum •Exclude Pancreatitis •Operable Tumour / Malignancies
  • 35. When not to operate…. • Cholangitis • Appendicial abscess • Acute diverticulitis + abscess • Acute pancreatitis / hepatitis • Ruptured ovarian cyst • Long standing perforated ulcer • Diabetic ketoacidosis • Myocardial infarction, acute pericarditis • Pulmonary infarction, pneumonia • GE reflux, adrenal insufficiency • Acute porphyria • Rectus muscle hematoma • Pyelonephritis, sickle cell crisis