Non-targeted analytical comparison of a heated tobacco product aerosol against mainstream cigarette smoke: does heating tobacco produce an inherently different set of aerosol constituents?

Smoking-related diseases remain a significant public health concern, and heated tobacco products (HTPs) have emerged as a potential alternative to cigarettes. While several studies have confirmed that HTP aerosols contain lower levels of harmful and potentially harmful constituents (HPHCs) than cigarette smoke, less is known about constituents that are intrinsically higher in HTP aerosols. This study provides a comprehensive comparative assessment of an HTP aerosol produced with Tobacco Heating System 2.

Routine chest roentgenogram after central venous catheter insertion is not always necessary.

Background: To evaluate the usefulness of routine radiologic control after the insertion of a central venous catheter as a tool that might modify treatment of patients.

Methods: A prospective study was made of 149 patients submitted to central venous catheter insertion.

Results: In 55% of the patients the roentgenogram showed an adequate placement of the catheter tip and in 3.