Abdominal guarding

Abdominal guarding

Abdominal guarding is the tensing of the abdominal wall muscles to guard inflamed organs within the abdomen from the pain of pressure upon them. The tensing is detected when the abdomen wall is pressed. [ [http://www.medterms.com/script/main/art.asp?articlekey=7200 Abdominal guarding definition - Medical Dictionary definitions of popular medical terms easily defined on MedTerms ] ]

Guarding is a characteristic finding in the physical examination for an abruptly painful abdomen (an acute abdomen) with inflammation of the inner abdominal (peritoneal) surface due, for example, to appendicitis or diverticulitis. The tensed muscles of the abdominal wall automatically go into spasm to keep the tender underlying tissues from being touched. [http://www.medicineonline.com/encyclopedia/A/Abdominal-Guarding/Abdominal-Rigidity]

Diagnosis

Differential Diagnosis

* Appendicitis
* Pancreatitis
* Diverticulitis
* Abdominal wall strain/injury
* Pelvic inflammatory disease
* Ectopic pregnancy
* Bowel obstruction
* Ileus
* Pneumonia
* Dyspepsia
* Nephrolithiasis
* Peptic ulcer disease
* Abdominal aortic aneurysm
* Anxiety
* Malingering
* Spontaneous bacterial peritonitis (SBP)
* Mesenteric ischemia
* GERD
* Ovarian cyst
* Hepatic or splenic contusion/laceration
* Pneumoperitoneum secondary to abdominal trauma
* Urinary tract infection/pyelonephritis
* Zoster
*:* Skin lesions may not be visible until another day or two
* Insect toxins (e.g. black widow spider)
* Abscess (e.g. iliopsoas)
* Incarcerated hernia
* Abdominal migraine
* Intussusception
* Volvulus

Laboratory Findings

* Complete blood count (CBC)
* Blood urea nitrogen (BUN)/creatinine
* Liver function tests (LFTs)
* Glucose
* Amylase/lipase
* Urine culture
* Urinalysis
* Beta-human chorionic gonadotropin (beta-hCG)
* Cervical cultures are recommended to diagnose pelvic inflammatory disease

Electrolyte and Biomarker Studies

* Electrolytes

MRI and CT

* CT diagnoses:
*:* Organ contusion
*:* Organ laceration
*:* Aneurysm
*:* Diverticulitis
*:* Appendicitis

Echocardiography or Ultrasound

* Pelvic, abdominal and/or transvaginal ultrasound diagnoses:
*:* Peritonitis
*:* Ectopic pregnancy
*:* Ovarian cysts
*:* Fluid/blood secondary to trauma
*:* Appendicitis
*:* Aneurysm

Other Imaging Findings

* KUB x-rays (kidney, ureter, bladder) could reveal nephrolithiasis and bowel gas pattern

Other Diagnostic Studies

* Symptomatic relief may be provided by paracentesis, which may also diagnose spontaneous bacterial peritonitis (SBP)
* Gastrointestinal endoscopy may be used or patients with suspected peptic ulcer disease
*:* "Helicobacter pylori" testing may also be used
* Trial medications may be beneficial for the diagnosis and treatment of:
*:* GERD/dyspepsia: Proton pump inhibitors or H2 blockers
*:* Abdominal wall strain: Nonsteriodal anti-inflammatory drugs (NSAIDs)
*:* Anxiety: Lorazepam
*:* Zoster: Acyclovir

Treatment

* Specific conditions need direct treatment
* Hemodynamic status and life-theratening disease require immediate attention
*:* Volume replacement with a possible blood transfusion, and with normal saline
* For obstruction and persistent vomiting, place nasogastric (NG) tube

Pharmacotherapy

* If perforated viscus or intra-abdominal infection suspected, administer broad-spectrum empiric antibiotics

Surgery and Device Based Therapy

* Early sepsis, or evidence of hemorrhage may require surgery (likely to be life-threatening emergency)

References

*Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3


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