Blood can form a gel when there are high concentrations of proteins, such as IgM and/or IgG antibodies, that precipitate at low temperatures (cryoglobulins) or agglutinate red blood cells (cold agglutinins) (1, 2 ). A bone marrow biopsy performed on this patient revealed Waldenström macroglobulinemia, which produces large amounts of IgM (3, 4). Warming this patient’s sample in a water bath, kee...

The purpose of the present study is to determine the limits of overhead radiation to which man in thermal neutrality can be exposed without feeling discomfort . Thermal neutrality for a person is defined as a condition in which he prefers neither a higher nor a lower ambient temperature level . Thermal neutrality is a necessary condition for a person to attain thermal comfort . However, this co...

after prolonged periods of quiet upright posture (such as standing in a queue, standing in a shower, or even sitting for long periods), after being in a warm environment (such as in hot summer weather, a hot crowded room, a hot shower/ bath), immediately after exercise after emotionally stressful events after eating, when blood flow has shifted to the gut during the process of digestion.

Tobacco smoking and body cooling have been shown to decrease the "resting" blood flow to the foot. The present study was designed to determine whether either of these (2 stimuli also affects the increased blood flow that follows a period of ischemia (reactive hyperemia). Blood flows to the foot were measured in subjects with and without vascular disease by the venous occlusion, water plethysmog...

Tobacco smoking and body cooling have been shown to decrease the "resting" blood flow to the foot. The present study was designed to determine whether either of these (2 stimuli also affects the increased blood flow that follows a period of ischemia (reactive hyperemia). Blood flows to the foot were measured in subjects with and without vascular disease by the venous occlusion, water plethysmog...

A 6 day old boy sustained scalds to his right foot from application of a "warm nappy" to increase blood flow to facilitate heel pricking for a routine Guthrie test. It is proposed that active warming of the heel in isolation is not necessary in heel blood sampling.