The role of worm infestation in allergic rhinitis

The purpose of this study is to determine the relevance of the hygiene hypothesis; that is to determine if worm infestation has a protective role against the development of allergic rhinitis. A prospective case controlled study was conducted. Specific IgG levels to Toxocara were studied in 85 patients confirmed to have allergic rhinitis and were compared to levels in another 85 controls, with no form of allergy. The IgG assay was done using ELISA technique. There was a higher incidence of positive specific IgG to Toxocara in the controls as compared to allergic patients. The values were statistically significant [Chi square test (p=0.002)]. This negative association between worm infestation and allergic rhinitis suggests that a previous worm infestation could protect against the development of allergic rhinitis.

Mucocutaneous exposure to body fluids during digestive endoscopy: the need for universal precautions.

BACKGROUND: Endoscopy personnel are at high risk of exposure to infectious body fluids during endoscopy. There are no studies documenting the frequency of such exposure. AIM: To determine the frequency of exposure to body fluids, and factors that may modify the risk of exposure during digestive endoscopy. METHODS: During a 10-month period, 948 endoscopy procedures done by two endoscopists were assessed for the occurrence of splashes to uncovered parts of the body. Odds ratio was used to determine any change in the exposure risk with different risk factors. RESULTS: The overall frequency of splash to any part of the body was 13.2% (95% CI 10.8-15.9). Common sites of exposure were the eyes, face, forearms and feet. Splash to the skin of the face, forearms and feet occurred in 9.5% (95% CI 7.5-11.8). The risk remained unchanged during therapeutic endoscopy, assisted endoscopy, or endoscopy with biopsy or cytology. Using video endoscopy led to significant reduction in splashes on the skin. Overall splash rate to the eyes was 4.1% (95% CI 2.9-5.6). This remained unchanged during therapeutic endoscopy, assisted endoscopy, and endoscopic biopsy or cytology sampling. The risk was not reduced during video endoscopy. CONCLUSIONS: Endoscopy results in muco-cutaneous exposure to potentially infectious body fluids in 13% or more procedures. The risk of exposure is not reduced by video endoscopy, or by avoiding instrumentation of the biopsy channel. We recommend that all endoscopists and endoscopy assistants must follow universal precautions.

Endoscopic palliation of malignant obstructive jaundice using resterilized accessories: an audit of success, complications, mortality and cost.

OBJECTIVE: To assess the success, complications and cost of endoscopic endoprosthesis placement for palliation of obstructive jaundice caused by malignancy. METHODS: Four hundred and two consecutive patients with obstructive jaundice due to nonresectable malignancy undergoing endoscopic stenting were studied. Commercial or home-made 7F or 10F endoprostheses were placed using minor modifications of the standard technique. The accessories were sterilized and reused. RESULTS: Endoprosthesis placement was successful in 291 patients (72.4%, 95% CI 67.7-76.7)-241 in one attempt, 49 in two attempts, and one in three attempts. Fifty nine patients (14.6%, 95% CI 11.4-18.6) had procedure-related complications, including cholangitis (30), pancreatitis (15), perforation (3) and bleeding (11). The incidence of cholangitis was significantly higher in bifurcation blocks than in other lesions (17.6% vs 4.7%, p = 0.0005). The success rate did not differ between distal and proximal lesions (68.1% vs 72.9%). The procedural cost per patient could be reduced from Rs 14,850 to Rs 6565 by reusing accessories after sterilization, and using home-made stents. CONCLUSIONS: Endoscopic endoprosthesis placement is a safe and effective method for palliation of malignant obstructive jaundice. Preparation of indigenous stents and reuse of accessories can reduce the cost of the procedure by over 50%.

Removal of impacted basket during endoscopic papillotomy: a novel method using precut papillotome.

Basket impaction is a rare problem during endoscopic papillotomy and stone extraction for the bile duct. Mechanical lithotriptor is usually employed to break the stone, but a few patients may require surgery. We describe a patient in whom a precut papillotome was used to break the stone and remove the impacted basket.