RESUMO
OBJECTIVE: The objective of our study was to compare the incidence of blood patch as the best objective indicator of postdural puncture headache after elective fluoroscopic lumbar puncture with the use of a 22-gauge Whitacre (pencil point) needle versus standard 22- and 20-gauge Quincke (bevel-tip) needles and to determine the best level of puncture. MATERIALS AND METHODS: The records of 724 consecutive patients who were referred to St. Mary's Medical Center department of radiology for fluoroscopic lumbar puncture from January 2003 through April 2007 were retrospectively reviewed. Emergency requests (191) were discarded along with those for patients with clinical signs of pseudotumor cerebri (21), normal pressure hydrocephalus (3), and failed attempts (4). The collective total was 505 elective lumbar punctures. RESULTS: The blood patch rate for the 22-gauge Whitacre needle was 4.2%. The result for the 22-gauge Quincke point needle was 15.1% whereas that for the 20-gauge Quincke point needle was 29.6%. In addition, the level of puncture showed a blood patch rate that increased as the level of lumbar puncture lowered. The highest level of lumbar puncture was L1-L2 with the lowest recorded level being L5-S1. CONCLUSION: The Whitacre needle is associated with a significantly lower incidence of blood patch rate after lumbar puncture. The highest level of puncture (L1-L2) also provides the lowest level of blood patch rate.
Assuntos
Placa de Sangue Epidural/métodos , Cefaleia/etiologia , Agulhas/efeitos adversos , Punção Espinal/efeitos adversos , Punção Espinal/instrumentação , Análise de Falha de Equipamento , Cefaleia/prevenção & controle , Humanos , Estudos RetrospectivosRESUMO
OBJECTIVE: The purpose of our study was to determine the natural history of small (= 2 cm) simple pancreatic cystic lesions. MATERIALS AND METHODS: A retrospective review was performed of patients with long-term follow-up who were diagnosed with small (= 2 cm) simple pancreatic cysts on sonography or CT from 1985 to 1996. Long-term surveillance included radiographic surveillance of 5 years or longer, clinical follow-up of 8 years or longer, or response to questionnaire or telephone inquiry 8 year or longer after the original diagnosis. Cause of death was recorded for patients who died within 5-8 years of diagnosis. Patients were excluded if a history of pancreatitis or systemic cystic disease existed. RESULTS: Seventy-nine patients had small simple pancreatic cysts. Forty-nine (62%) had adequate radiologic, clinical, or questionnaire follow-up. Of the 22 patients with radiologic follow-up, 13 (59%) had cysts that remained unchanged or became smaller (mean size, 8 mm; mean follow-up, 9 years), and nine (41%) had cysts that enlarged, from a mean of 14 mm to a mean of 26 mm (mean follow-up, 8 years). Of the 27 patients with clinical or questionnaire follow-up (mean follow-up, 10 years), none developed symptomatic pancreatic disease. Eighteen patients (23%) died within 8 years without adequate radiologic follow-up, none of pancreas-related causes. Twelve patients (15%) were lost to follow-up. CONCLUSION: Although small, incidental, simple pancreatic cysts of 2 cm or smaller may enlarge over a prolonged time, morbidity or mortality due to these small simple cysts is extremely unlikely, and observation appears to be a safe management option.