University:
Camosun College
Course:
NURS132 | Promoting Health and Wellbeing
Academic year:

2023
Views:

165

Pages:

3
Author:

Aysha A

ASCARIS (ROUNDWORM) Intection of small intestine caused by Ascaris lumbricoides soil transmitted Helminth Epidemiology Tropical coutries Transmission-Fecally contaminated soils (Lack of sanitary Facilities Case of Human Feces as fertilizer) MORPHOLOGY ADULT cylindrical 15-31 cm LIFE CYCLE Erbonated (Larvae) efs company EMERVONATION Chembryonated ey passed in feces Fertilization Develops into Adult worm Small Intestine Swallowed Pharynx Female egys infertilizel esgs. LARVAE (4 stages Men acquis infection by je ingestion of contaminated soil, food, and water with embryonated egg Lungs out from egg Molting Larva penetrates intestinal Wall Venous ctralation Right side of Heart Pulmonary Capillary EGU Rhabditiform Larva (12) hatches •MIGRATORY PHASE: 24 LIFE CYCLE INTESTINAL PHASE 14 Adult worms f+o" DEVELOPMENT IN SOIL: L₁₂ (Infective) • Mode of transmission Ingestion of embryonated eggs from the contaminated soil, food and Water Migratory phase Following ingestion, eggs hatch out to Lorval which molt once more to form 23. •13 penetrate Mlestine, reach right side heart via portal circulation, then enters (Tungs) via pulmonary apillaries, where they molt once to form 14 •14 Reade phary and finally are swallowed to re-enter the intestina • Intestinal Phase Me Ly Larvae undego final molt to develop into adult worms in the small intestine •Following fertilization, female worms stort laying the fertilized eggs which are passed to feces. A gravid female con lay upto 2.4 khulday •Development in soil The fertilized eggs molt twite become embryonatel (½ larvae) which is infective occurs within 2 weeks under waremklay soil, 22-30°C & 40% Humidity ✓Ascaris embryonated eggs resistant, t survive for as thick egg shell, long as 15 years Ascareside ja lipoprotein" PITHOGENESIS & CLINICAL FEATURES Pulmonang phase: Ees imphulic polcudiante Incubation period 60-70 days Intestinal AMIEA PULMONARY PHASE Rosells from migrating larva in the lungs, which promote an immune- mediated hypersensitivily response Symptons (and week att ingestions Non-productive cough chest discomfort Fever EOSINOPHILIC PNEUMONIA (LOEFFLERS SYNDROME) In severe case, patient develops dyspner & Pastrient patchy infitrates Seen in chest-X-ray along with transient peripheral eosinophilia. AMIIEA INTESTINAL PHASE (Adult worn intestine) Asympromatic •Malnutrition & growth Retardation (children <5 years) Ceducational performance, File motor, language, social, gross) •Intestinal complications (obstruction or perforation-Acute abd.pain. Extra intestinal complications odule bilig tree Biling colic choleo ystitis, pancreatitis, Rave (Interpa Phosyx respiratory obstruction or block eustachion tube •Allerge manifestations "↳ Fever, urticana, angioneurotie ademe, and conjunctivitis. may ocardie to toxic Fluid released by adut worm.