Gastrointestinal Emergencies




(1)
Royal Free NHS Foundation Trust, London, UK

 




Causes of dysphagia

Oropharyngeal



  • Neurological motility disorder: stroke; movement disorders (Parkinson’s disease, progressive supranuclear palsy); amyotrophic lateral sclerosis; multiple sclerosis; bulbar palsy; brainstem tumour; pseudobulbar palsy


  • Striated muscle disease: myasthenia gravis; myotonic dystrophy; polymyositis; dermatomyositis; inflammatory myopathy; muscular dystrophy


  • Reduced salivary flow leading to dry mouth (xerostomia): Sjogren’s syndrome; anticholinergics; antihistamines; ACE inhibitors; alpha-adrenergic blockers


  • Structural lesions: inflammatory: pharyngitis, tonsillar abscess; head and neck tumours; pharyngeal diverticula; ulcerative stomatitis; painful glossitis; anterior marginal cervical osteophytes (especially with diffuse idiopathic skeletal hyperostosis)


  • Metabolic: hypothyroidism; hyperthyroidism; steroid myopathy

Oesophageal



  • Solids & liquids (neuromuscular motility disorders)



    • Progressive: scleroderma; achalasia (progressive dysphagia for both solids and liquids; regurgitation of undigested food and saliva; chest pain; nocturnal cough and aspiration; minimal or no weight loss)


    • Intermittent: diffuse oesophageal spasm; presby-esophagus (nutcracker oesophagus)


  • Solids only (mechanical obstruction)



    • Intermittent: lower oesophageal ring (Schatzki’s ring); hypertensive lower oesophageal sphincter


    • Progressive: peptic stricture (acid reflux due to gastro-oesophageal reflux disease); oesophageal cancer (progressive dysphagia, odynophagia, regurgitation, chest pain, weight loss, hoarseness of voice); foreign body impaction


Causes of mechanical obstruction





  • Strictures



    • Benign (peptic): reflux oesophagitis


    • Malignant: carcinoma of oesophagus or gastric cardia


  • Extrinsic compression: bronchial carcinoma; mediastinal lymph nodes; vascular compression; cervical osteoarthritis with vertebral osteophytes; mediastinal tumours


  • Oesophageal web


  • Foreign bodies (especially with pre-existing gastrointestinal abnormalities, such as diverticula, webs, rings): food bolus impaction; disc or button battery; coin (oesophageal coins are seen in a coronal alignment on an AP xray); toy parts, marbles


  • Extrinsic compression: goitre with retrosternal extension; mediastinal tumours; large left atrium

Odynophagia



  • Oesophagitis: infective (candidal; herpetic; cytomegalovirus); pill-induced (associated with oesophageal dysmotility, stricture or extrinsic compression) (tetracycline, doxycycline; potassium chloride; NSAIDs, aspirin; alendronate); corrosive (caustic ingestion); radiation induced


  • Oesophageal ulcer


Dysphagia checklist





  • Evidence of weight loss


  • Anaemia


  • Hoarseness of voice


  • Oral ulceration; signs of candidiasis


  • Cervical lymphadenopathy


  • Bulbar signs


  • Chest signs


Features of caustic ingestion





  • Oedema of the lips, tongue and palate


  • Oropharyngeal burns


  • Drooling of saliva


  • Dysphagia


  • Nausea and vomiting


  • Haematemesis


  • Shortness of breath


  • Stridor


  • Abdominal pain


Features of neurogenic dysphagia





  • Drooling of saliva


  • Difficulty in initiating swallowing


  • Nasal regurgitation


  • Choking or coughing while feeding


  • Food sticking in the throat


  • Nasal tone to speech


  • Aspiration, with recurrent pneumonia


Features of oropharyngeal dysphagia





  • Solids handled better than liquids


  • Difficulty initiating swallowing


  • Cough and choking during and after swallowing


  • Nasal regurgitation of liquids


  • Hesitancy and repeated attempts at the inititation of swallowing


  • Food sticking in throat


  • Nasal speech


  • Changes in the character of the voice


  • Constant drooling of saliva


Features of oesophageal dysphagia





  • Sensation of food sticking in chest or throat after swallowing


  • Recurrent pneumonia


  • Gastro-oesophageal reflux disease: heartburn; belching; sour regurgitation; waterbrash


Red flags for dysphagia





  • Progressive painless dysphagia


  • Unintentional weight loss


  • Persistent vomiting


  • Haematemesis


  • Hoarseness of voice


  • Systemic symptoms: fever, night sweats


  • Bulbar neurological signs


  • Cervical lymphadenopathy


Risk factors for oesophageal cancer





  • Age >70 years


  • Smoking


  • Alcohol consumption (SCC)


  • Dietary factors


  • Barrett oesophagus


  • Gastro-oesophageal reflux disease (adenocarcinoma)


  • Excessive ingestion of very hot liquids (SCC)


  • Caustic ingestion (SCC)


  • Achalasia (SCC)


  • Plummer-Vinson syndrome (SCC)


Dysphagia evaluation checklist





  • All: FBC, U&E, LFTs, bone profile, CXR (mediastinal widening, absence of gastric air bubble, extrinsic mass)


  • Oropharyngeal: direct laryngoscopy; video fluoroscopy


  • Oesophageal: endoscopy; barium swallow; oesophageal manometry


Possible presentations of gastro-oesophageal reflux disease





  • Gastrointestinal: heartburn; regurgitation; waterbrash; globus sensation of lump in neck or throat; dysphagia (erosive oesophagitis; peptic stricture (intermittent solid food dysphagia in a patient with heartburn); adenocarcinoma of oesophagus); odynophagia; hiccups; epigastric pain, dyspepsia; vomiting; erosion of dental enamel


  • Pulmonary: chronic nocturnal cough; asthma; sleep apnoea; aspiration; recurrent pneumonia; interstitial pulmonary fibrosis; acute life-threatening episodes


  • ENT: sore throat; hoarseness; laryngitis; chronic sinusitis; vocal cord granulomas; sub-glottic stenosis


  • Atypical chest pain


  • Dystonic movements: Sandifer’s syndrome (gastro-oesophageal reflux associated with torsional dystonia of the head, neck, eyes and trunk, and opithostonic posturing)


Risk factors for gastro-oesophageal reflux





  • Smoking


  • Alcohol ingestion


  • Obesity


  • Drugs: NSAIDs; calcium channel blockers; nitrates; benzodiazepines


  • Systemic disease: diabetes mellitus with autonomic neuropathy; scleroderma


  • Sleep apnoea


Causes of odynophagia





  • Infectious oesophagitis


  • Gastrooesophageal reflux/stricture


  • Pill-induced ulceration


  • Radiation oesophagitis


  • Caustic stricture


  • Foreign body


  • Cancer


Causes of infective oesophagitis





  • Fungal infections: candida albicans



    • Risk factors


    • Immunocompromised: HIV infection; transplant recipient; immunosuppressive therapy


    • Immunocompetent: prolonged antibiotic therapy; acid suppressive therapy; oesophageal motility disorders; diabetes mellitus; head and neck radiation therapy


  • Viral infections: herpes simplex; cytomegalovirus; Epstein-Barr virus


  • Bacterial infections


  • Protozoal infections


Abdominal pain mechanisms





  • Peritoneal irritation


  • Visceral obstruction


  • Visceral ischaemia


  • Visceral inflammation


  • Abdominal wall pain


  • Referred pain


Patterns of abdominal pain

Parietal: irritation of parietal peritoneum



  • Pain in dermatome distribution


  • Well localised


  • Sharp


  • Clear onset

Visceral: stretch, distension, contraction (spasm), compression or torsion of a hollow viscus



  • Referred pain in embryonic distribution


  • Poor localisation


  • Dull and aching


  • Insidious onset

Referred


Dermatomal perception of visceral pain










































Organ

Site of pain

Dermatomes

Stomach

Epigastrium

T6-T10

Small bowel

Umbilical

T9-T10

Gallbladder

Epigastrium

T7-T9

Pancreas

Epigastrium

T6-T10

Colon up to splenic flexure

Umbilical

T11-L1

Colon from splenic flexure

Hypogastrium

L1-L2

Testis and ovary

Umbilical

T10-T11


Causes of abdominal pain

(the site of origin of pain may be related to the source of the underlying causative pathology)

Diffuse pain



  • Aortic aneurysm: leaking; ruptured


  • Aortic dissection


  • Early appendicitis


  • Bowel obstruction


  • Diabetic gastric paresis; diabetic ketoacidosis


  • Gastroenteritis (vomiting precedes abdominal pain)


  • Heavy metal poisoning


  • Hereditary angioedema


  • Mesenteric ischaemia


  • Volvulus


  • Metabolic disorder: Addisonian crisis, ketoacidosis (diabetic, alcoholic), acute intermittent porphyria (attacks of severe diffuse abdominal pain, associated with nausea and vomiting, constipation, muscle weakness, urine retention, and sometimes confusion, hallucinations and seizures; increased urine delta-aminolaevulinic acid and porphobilinogen; atatcks may be precipitated by hormonal changes, drugs, reduced calorie intake, alcohol, and emotional stress), uraemia


  • Opioid withdrawal


  • Pancreatitis


  • Perforated bowel


  • Peritonitis from any cause


  • Sickle cell crisis


  • Malaria


  • Familial Mediterranean Fever

Abdominal wall pain (Carnett sign: pain is increased on tensing abdominal wall by lifting head and shoulders off the examination table while supine)



  • Spiegelian, incisional hernia


  • Rectus sheath haematoma (abdominal wall mass with bruising; risk factors include old age, anticoagulant therapy, trauma, injection procedures, physical exercise, and raised intra-abdominal pressure fro coughing, sneezing or vomiting)


  • Muscle strain

Right upper quadrant pain



  • Biliary disease: Biliary colic; acute cholecystitis (Murphy’s sign of inspiratory arrest due to pain on inspiration during right subcostal palpation with hand or ultrasound probe; jaundice in 20–25% cases); choledocholithiasis, cholangitis


  • Hepatic disease: acute hepatitis; liver abscess; hepatic congestion; liver tumour


  • Perihepatitis (Fitzhugh-Curtis syndrome): may be associated with signs of salpingitis


  • High retrocaecal appendicitis; appendicitis complicating pregnancy


  • Perforated duodenal ulcer


  • Perinephritis


  • Pulmonary: right lower lobe pneumonia; pleuritis; pulmonary embolism; empyema


  • Myocardial ischaemia


  • Herpes zoster


Causes of tender palpable right subcostal mass

Empyema of gallbladder (suppurative cholecystistis).

Gall bladder perforation with abscess

Omental phlegmon

Carcinoma of the gall bladder


Risk factors for cholesterol gallstones

Increased bile cholesterol concentration



  • Increasing age


  • Female gender


  • Obesity


  • Pregnancy and multiparity


  • Rapid weight loss (>1.5 kg/week), including during treatment for morbid obesity


  • Hypertriglyceridaemia


  • Low LDL cholesterol


  • Diabetes mellitus


  • Drugs: oestrogens, octreotide, ceftriaxone

Reduced bile acid pool



  • Ileal disease (Crohn’s disease; terminal ileal resection/ bypass)


  • Primary biliary cirrhosis


Hepato-biliary causes of right upper quadrant pain in pregnancy

Not unique to pregnancy



  • Viral hepatitis


  • Budd-Chiari syndrome


  • Hepatic malignancy


  • Biliary colic


  • Choledocholithiasis


  • Cholangitis


  • Cholecystitis

Unique to, or highly associated with, pregnancy



  • Pre-eclampsia or eclampsia


  • HELLP (haemolysis, elevated liver enzymes and low platelet count) syndrome (third trimester)


  • Acute fatty liver of pregnancy


  • Hepatic haemorrhage or rupture


  • Symptomatic choledochal cysts


Left upper quadrant pain





  • Splenic: splenic rupture/distension; splenic infarction; splenomegaly (spontaneous splenic rupture can present with referred left shoulder pain from diaphragmatic irritation-Kehr’s sign, and a tender left upper quadrant mass-Ballance’s sign, and is associated with infections (infectious mononucleosis and malaria) and haematological malignancy (lymphoma and leukaemia)


  • Ruptured splenic artery aneurysm


  • Gastritis


  • Perforated gastric ulcer


  • Jejunal diverticulitis; diverticulitis affecting the splenic flexure


  • Pancreatitis


  • Pulmonary: left lower lobe pneumonia; pleuritis; empyema


  • Cardiac: pericarditis; myocardial ischaemia


  • Herpes zoster


Right lower quadrant pain





  • Colonic: acute appendicitis; acute enterocolitis; caecal diverticulitis; colonic obstruction; torsion of appendices epiploicae; epiploic appendagitis


  • Small bowel: Crohn’s disease (terminal ileitis); Meckel’s diverticulitis; small bowel obstruction; intusussception (triad of vomiting, abdominal pain and currant jelly stools)


  • Foreign body perforation


  • Mesenteric adenitis


  • Perforated peptic ulcer


  • Gynaecological: ovarian cyst accident (including mittelschmerz)- rupture, torsion; endometriosis; pelvic inflammatory disease(salpingitis); ectopic pregnancy


  • Cholecystitis


  • Vascular: aortic aneurysm: leaking; ruptured; ruptured iliac artery aneurysm


  • Renal: renal/ureteric colic; pyelonephritis


  • Psoas abscess


  • Inguinal hernia: incarcerated; strangulated


  • Testicular torsion


  • Seminal vesiculitis


  • Rectus sheath haematoma


  • Herpes zoster


Left lower quadrant pain





  • Colonic: diverticulitis (sigmoid); acute appendicitis (with situs inversus); perforated colonic cancer; Crohn’s colitis; ischaemic colitis; colonic obstruction


  • Vascular: aortic aneurysm: leaking; ruptured; ruptured iliac artery aneurysm


  • Gynaecological: ovarian cyst accident (including mittelschmerz),-torsion, rupture); endometriosis;pelvic inflammatory disease(salpingitis); ectopic pregnancy


  • Renal: renal/ureteric colic; pyelonephritis


  • Psoas abscess


  • Testicular torsion


  • Inguinal hernia: incarcerated; strangulated


  • Seminal vesiculitis


  • Rectus sheath haematoma


  • Herpes zoster


Potential causes of non-specific abdominal pain

(diagnosis of exclusion)



  • Viral infection


  • Parasitic infestation


  • Gastroenteritis


  • Mesenteric adenitis


  • Ovulatory pain


  • Lesions of appendices epiploicae of colon


Medical causes of acute abdominal pain





  • Intra-thoracic: inferior ST elevation myocardial infarction; pericarditis; lower lobe pneumonia; pulmonary embolism; oesophageal disease


  • Endocrine/ metabolic: diabetic ketoacidosis; acute adrenocortical insufficiency; acute intermittent porphyria; hyperlipidaemia; Familial Mediterranean Fever


  • Drug induced: opioid withdrawal; lead poisoning


  • Haematological: sickle cell crisis; acute leukaemia


  • Central nervous system: pre-eruptive phase of herpes zoster; spinal nerve root compression


Causes of peritonitis





  • Hollow viscus perforation: stomach (gastric ulcer; gastric cancer); duodenum (duodenal ulcer); small bowel (mesenteric ischaemia and infarction); colon (divericulitis; cancer; inflammatory bowel disease); appendix (appendicitis); gallbladder (cholecystitis)


  • Abdominal trauma: blunt; penetrating


  • Foreign body ingestion


  • Anastomotic leakage


  • Spontaneous bacterial peritonitis: ascites from portal hypertension; nephrotic syndrome


  • Pelvic inflammatory disease


Abdominal pain evaluation

History

SOCRATES to characterize pain (allow the patient to describe the pain initially without any leading questions)



  • Site and duration


  • Onset: sudden versus gradual; sudden onset suggests a vascular emergency (mesenteric ischaemia; ruptured abdominal aortic aneurysm), volvulus, intestinal perforation or torsion of hollow viscus


  • Character: sharp, dull, aching, colicky, burning


  • Radiation: shoulder, back, groin or testicle


  • Timing: intermittent, constant


  • Exacerbating (aggravating factors): movement (worsens pain in peritonitis), position, food, medications, and alleviating factors: rest.


  • Severity

Associated symptoms: fever; nausea and vomiting; diarrhoea/constipation; haematemesis/ melaena; fresh rectal bleeding; dysuria/ haematuria

Physical examination checklist



  • Vital signs; tachypnoea may be related to metabolic acidosis, hypoxaemia, or catecholamine-induced pain response; signs of hypovolaemia: tachycardia, postural hypotension


  • Localisation of maximal tenderness and guarding


  • Signs of peritonitis: tenderness, guarding (abdominal wall rigidity), percussion tenderness, rebound tenderness (gentle depression of the abdominal wall for 15 to 30 minutes, followed by sudden release of pressure), generalised ileus, fever


  • Specific signs: Carnett’s sign: increased pain on tensing abdominal wall when a supine patient lifts the head and shoulders off the bed; Murphy’s sign: inspiratory arrest on deep palpation of right upper quadrant; psoas sign (passive hip extension is painful, with the patient in the lateral decubitus position); Rovsing’s sign (pressure in the left lower quadrant produces rebound pain in the right lower quadrant on release of the pressure); obturator sign (flexion with external and internal rotation of the hip is painful)


  • Abdominal mass


  • Aortic tenderness or enlargement (bedside ultrasound may be useful)


  • Hernial orifices


  • External genitalia


  • Bowel sounds: absent; normal; hyperactive; tinkling


  • Rectal examination


  • Bimanual pelvic examination


Special considerations with assessment of acute abdominal pain in the elderly





  • Difficulty in obtaining a history caused by impaired cognitive function (eg dementia)


  • Atypical presentations


  • Lack of typical clinical findings (eg peritonitis without peritonism)


  • Multiple co-morbidities


  • Medications that block physiological responses leading to difficulty in assessment (eg beta-blockers)


  • Decreased immune function, leading to increased severity of disease


Causes of acute abdominal pain and shock (indicative of hypovolaemia and/or sepsis)





  • Perforated hollow viscus: perforated peptic ulcer


  • Massive haemorrhage: spontaneous splenic rupture; leaking abdominal aortic aneurysm; ruptured ectopic pregnancy


  • Acute arterial occlusion: mesenteric accident (superior mesenteric artery embolism/ thrombosis, mesenteric venous thrombosis, non-occlusive mesenteric ischaemia); strangulation obstruction


  • Third space losses of fluid: acute pancreatitis


  • Cardiac: acute inferior STEMI


Causes of haemoperitoneum





  • Trauma: penetrating; blunt (liver, spleen)


  • Vascular accident: ruptured aneurysm of abdominal aorta, splenic artery, or iliac artery


  • Gynaecological: ruptured ectopic pregnancy; ruptured ovarian cyst (follicular cyst; endometriotic cyst)


  • Ruptured intra-abdominal neoplasm: hepatocellular carcinoma; hepatic adenoma; pelvic tumours (malignant ovarian masses; uterine sarcomas)


  • Spontaneous rupture of spleen


  • Anticoagulant therapy


Causes of referred abdominal pain





  • Cardiac: inferior STEMI; congestive heart failure with hepatic congestion


  • Pulmonary: lower lobe pneumonia; pulmonary embolism


Presentations of ruptured abdominal aortic aneurysm

(infra-renal aortic diameter 3 cm or more)



  • Triad of abdominal, flank or back pain, acute hypotension and pulsatile abdominal mass; a tender aneurysmal mass is indicative of an aortic emergency


  • Ureteric colic


  • Rupture into inferior vena cava (aorto-caval fistula): high-output congestive heart failure


  • Rupture into duodenum (aorto-duodenal fistula): upper gastrointestinal bleeding


  • Acute testicular pain and bruising


  • Inguinoscrotal mass mimicking hernia


  • Rupture into left renal vein: massive haematuria


  • Iliofemoral venous thrombosis from ilio-caval compression


  • Acute lower limb ischaemia


  • Chronic contained rupture, with lumbar neuropathy

Other potential presentation of abdominal aortic aneurysm:



  • Duodenal compression


  • Hydronephrosis


  • Ureteric obstruction and renal pain


  • Thrombo-embolic phenomena: femoral; popliteal; microemboli(trash foot: tip necrosis of toes; small punctate pretibial ischaemic lesions


  • Acute thrombosis, resembling saddle embolus


Bedside ultrasound diagnosis of abdominal aortic aneurysm

Abdominal aortic aneurysm is dilatation of the aorta greater than 3 cm or 1.5 times the normal diameter for that person

Maximum aortic diameters at different levels



  • Level of diaphragm 2.5 cm


  • Level of renal arteries 2 cm


  • Bifurcation 1.5–2 cm


  • Iliac arteries just distal to the bifurcation 1 cm


Atypical presentations of acute appendicitis





  • Acute right upper quadrant or loin pain: retro-caecal or retro-colic appendicitis


  • Gastroenteritis: diarrhea and vomiting: pre-and post-ileal appendicitis


  • Acute right lower quadrant pain with psoas irritation


  • Acute small bowel obstruction


  • Dysuria and pyuria; microscopic haematuria: sub-caecal and pelvic appendicitis


Alvarado Score (MANTRELS) for diagnosis of acute appendicitis

SYMPTOMS



  • Migration of pain to the right lower quadrant = 1


  • Anorexia = 1


  • Nausea or vomiting = 1

SIGNS



  • Tenderness in the right lower quadrant = 2


  • Rebound tenderness = 1


  • Elevated temperature: fever of 37.3 C or more = 1

LABORATORY TESTS



  • Leukocytosis >10,000 white blood cells per microlitre in the serum = 2


  • Left shift of leukocytes = 1





  • Total = 10





  • Score


  • 5 or 6: Compatible with the diagnosis of acute appendicitis





  • 7 or 8: Probable appendicitis


  • 9 or 10: Very probable acute appendicitis


Investigations for abdominal pain





  • Venous blood: full blood count, urea and electrolytes, CRP, liver function tests (right upper quadrant pain), amylase/lipase, glucose; blood gas analysis


  • 12 lead ECG


  • Ultrasound/CT


  • Urine dipstick


  • Urine beta-HCG (all women of child bearing age)


Red flags for abdominal pain





  • Severe pain


  • Signs of shock


  • Abdominal distension


  • Signs of peritonitis


  • Failed initial treatment


  • Haemodynamic disturbance


Causes of loin pain





  • Renal: pyelonephritis; calculus; neoplasm; infected obstructed kidney; abscess; infarction; pelvi-ureteric obstruction


  • Aortic: leaking aneurysm; dissection


  • Radiculopathy


  • Muscle strain


  • Herpes zoster


  • Retroperitoneal fibrosis


Causes of hyperamylasemia

(rises 2–12 h after initiating insult, and remains elevated 3–5 days).

Pancreatic causes



  • Acute pancreatitis; acute exacerbation of chronic pancreatitis


  • Pancreatic cancer

Non-pancreatic intra-abdominal emergencies



  • Ruptured ectopic pregnancy


  • Peritonitis


  • Perforated hollow viscus (peptic ulcer disease with perforation


  • Intestinal obstruction


  • Mesenteric ischaemia/infarction


  • Biliary tract disease; acute cholecystitis; choledocholiathiasis


  • Aortic dissection


  • Acute appendicitis


  • Acute salpingitis

Miscellaneous



  • Salivary gland disease


  • Pregnancy


  • Tumour


  • Burns


  • Renal disease: chronic kidney disease


  • Diabetes ketoacidosis


  • Macroamylasaemia


Features of acute pancreatitis



Nov 20, 2017 | Posted by in Uncategorized | Comments Off on Gastrointestinal Emergencies

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