Log in




Home

Esophageal Diverticula (Diverticulum)

July 7th, 2008

An esophagel diverticulum can be either a pulsion or traction type. The classic presentation is in an elderly male who develops dysphagia, regurgitation of undigested food, and a gurgling sound in the neck.

Pulsion diverticula are usually acquired lesions and are commonly associated with motor dysfunction. They usually develop when the mucosa and submucosa protrudes through a defect in the musculature of the esophagus.

Pulsion diverticula are also known as Zenker’s diverticulum. The most common origin is in the posterior midline of the neck above the cricopharyngeus muscle and below the inferior pharyngeal constrictor muscle.

Treatment of Zenker’s diverticulum is resection and cricopharyngeal myotomy to relax the muscle.

Traction diverticula result when the esophageal wall is pulled by adjacent inflammation. The most typical scenario is enlarged and inflammed peribronchial mediastinal lymph nodes.

February 24, 2008

February 24th, 2008


Primary Peritonitis

Peritonitis is defined as the presence of microorganisms in the normally sterile peritoneal sac. It is classified as primary, secondary, or tertiary.

In primary peritonitis, there is no identifiable source of infection. It is associated with peritoneal diaylysis, systemic lupus erythematosus, ascites, and cirrhosis.

It is often monomicrobial with the most common pathogen being Escherichia coli. Other common Gram-negative species identified include Klebsiella. Gram-positive species isolated include Streptococcus and Enterococcus.

These are considered serious infections and mortality can reach 50% in cases with cirrhosis.


Copyright 2008 InsideSurgery.com®

October 14, 2007

October 14th, 2007


Scheduled Nebulizer Treatment in Paraplegics

Most physiatrists (rehab physicians) put patients with high spinal cord injuries on a scheduled regimen of nebulizer treatment to facilitate clearance of secretions.

These patients tend to have hyperactivity of the airway and the unopposed parasympathetic stimulation of albuterol stimulates increased ciliary function.


Copyright 2007 InsideSurgery.com®

October 13, 2007

October 13th, 2007


Heparin-Induced Thrombocytopenia – Quick Fact

In the setting of heparin-induced thrombocytopenia type 2 long-term anticoagulation is usually prescribed, usually with coumadin. This should not be started until the platelet count has rebounded to 100,000/dl. No heparin should be given until the patient has been retested to rule out for the continuing presence of heparin antibodies.


Copyright 2007 InsideSurgery.com®

October 9, 2007

October 9th, 2007


Five Causes of Wide QRS Complexes on Electrocardiogram

1. Ventricular tachycardia (V-tach)
2. Supraventricular tachycardia with aberrancy
3. Drug-induced intraventricular bundle branch block
4. Pacemaker generated heart beat
5. Wolff-Parkinson-White syndrome


Copyright 2007 InsideSurgery.com

October 6, 2007

October 6th, 2007

Dobutamine Quick Fact

Dobutamine is the cardiac “pressor” that causes the least the tachycardia (rapid heart rate) and experienced ICU physicians will often use this drug when they want to keep the heart rate less than 100 beats per minute.

Copyright 2007 InsideSurgery.com

September 26, 2007

September 26th, 2007

The Scaphoid Bone – where is this bone and what does it do?

20070926 scaphoid September 26, 2007

September 14, 2007

September 14th, 2007


Vitamin K (phytonadione) should never be given to patients with mechanical (prosthestic) heart valves. It causes an unacceptably high rate of clot formation on the valve, particularly on the hinges of the valve. These clots then can embolize to the brain and cause cerebral vascular incidents (strokes).


Copyright 2007 InsideSurgery.com

September 4, 2007

September 4th, 2007

Arterial Blood Supply to the First Part of the Duodenum

The arterial supply to the duodenum is confusing, even for experienced surgeons – in part because of the normal anatomic variability found in individuals.

The main arterial root is the common hepatic artery which branches off to form the gastroduodenal artery and the proper hepatic artery. The gastroduodenal artery then sends two branches to the first part of the duodenum – the supraduodenal artery and the posteriorly running superior pancreaticoduodenal branch – aka as the retroduodenal artery of Edwards)

August 6, 2007

August 6th, 2007


Peritumoral Injection in Sentinel Lymph Node Breast Biopsy

Injection of isosulphan blue dye and technetium in the area around the tumor as has been classically described in sentinel lymph node biopsy has limitations in patients with upper outer quadrant breast lesions.
Continue reading "August 6, 2007"