196,235 research outputs found
Experimental evaluation of aerosol production after dental ultrasonic instrumentation: An analysis on fine particulate matter perturbation
No full textAerosol production represents a major concern during the majority of dental procedures. The aim of the present study is to investigate the dynamics of aerosol particles after 15 min of continuous supragingival ultrasonic instrumentation with no attempt of containment through particle count analysis. Eight volunteers were treated with supragingival ultrasonic instrumentation of the anterior buccal region. A gravimetric impactor was positioned 1 m away and at the same height of the head of the patient. Particles of different sizes (0.3–10 μm) were measured at the beginning of instrumentation, at the end of instrumentation (EI), and then every 15 min up to 105 min. The 0.3-μm particles showed non-significant increases at 15/30 min. The 0.5–1-μm particles increased at EI (p < 0.05), and 0.5 μm remained high for another 15 min. Overall, all submicron aerosol particles showed a slow decrease to normal values. Particles measuring 3–5 μm showed non-significant increases at EI. Particles measuring 10 μm did not show any increases but a continuous reduction (p < 0.001 versus 0.3 μm, p < 0.01 versus 0.5 μm, and p < 0.05 versus 1–3 μm). Aerosol particles behaved differently according to their dimensions. Submicron aerosols peaked after instrumentation and slowly decreased after the end of instrumentation, whilst larger particles did not show any significant increases. This experimental study produces a benchmark for the measurement of aerosol particles during dental procedures and raises some relevant concerns about indoor air quality after instrumentation
Qualità e quantità del parassitismo enterico nel contingente di albanesi rifugiati a Pisa
No full textAdozione di un nuovo modello “Aziendale” per la donazione ed il trapianto di organi e tessuti: prime valutazioni
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Height outcome of the recombinant human growth hormone treatment in patients with SHOX gene haploinsufficiency: a meta-analysis.
No full textBackground: Patients with mutations or deletions of the SHOX gene present variable growth impairment, with or without mesomelic skeletal dysplasia. If untreated, short patients with SHOX haplodeficiency (SHOXD) remain short into adulthood. Although recombinant human growth hormone (rhGH) treatment improves short-term linear growth, there are episodic data on the final height of treated SHOXD subjects. Patients & methods: After a thorough search of the published literature for pertinent studies, we undertook a meta-analysis evaluation of the efficacy and safety of rhGH treatment in SHOXD patients. Results: In SHOXD patients, administration of rhGH progressively improved the height deficit from baseline to 24 months, although the major catch-up growth was detected after 12 months. The rhGH-induced growth appeared constant until final height. Conclusion: Our meta-analysis suggested rhGH therapy improves height outcome of SHOXD patients, though future studies using carefully titrated rhGH protocols are needed
Copertura vaccinale contro la pertosse nella zona valdarno inferiore della ASL 11 – Empoli, dal 1985 al 1998
No full textDetection and decontamination of Mycobacterium chimaera and other non-tuberculosis mycobacteria in heater–cooler devices used in cardiopulmonary bypass: a Manufacturer and National guidelines summary, and a potential resolution to the problem requiring further investigation
No full textSince 2011, invasive infections due to Mycobacterium chimaera have been diagnosed in patients with previous cardiac surgery. The use of heating/cooling devices (heater–cooler units), necessary to regulate the blood temperature in extra-corporeal circulation, has been identified as a source of contaminated aerosol. Adhering to a strict maintenance program according to the manufacturer’s instructions for use including sanitizing is essential to reduce the risk. Current manufacturer guidelines and national recommendations for detection and decontamination of Mycobacterium chimaera and other non-tuberculosis mycobacteria should organically update units’ policies and protocols as they are published
Infezioni a trasmissione parenterale: procedure di sorveglianza e controllo attuate nell’Azienda USL 2 di Lucca
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