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Biomedical subjects

H Zonder

Publications and source records attributed to H Zonder.

7 recordsLinked to original sources
PubMed1999

[Low prevalence of hepatitis G infection in dialysis patients in Israel].

Prevalence of hepatitis G virus (HGV) infection in the general western population ranges from 0.2-1.5%. In high-risk groups, such as patients with chronic liver disease, hematologic disorders and drug addicts, prevalence is as high as 10%-15%. Dialysis patients have increased rates of HGV infection (6%-50%). We evaluated prevalence of HGV infection among dialysis patients, and the association between HGV infection and hepatitis C virus (HCV) infection. Serum samples were screened for HGV infection by RT-PCR. Screening for HCV infection was performed by an EIA test and confirmed by RIBA and RT-PCR for HCV. Sera were also tested for HBV markers. The study group included all 78 hemodialysis patients and 7 of the 12 peritoneal dialysis patients in our unit during September to November 1997. 4 (5.2%) were HGV-positive but none were peritoneal dialysis patients. 1 of the 12 HCV-positives was also infected with HGV. HGV infection was not associated with duration of dialysis, number of blood transfusions or levels of transaminases. Prevalence of HGV infection among our hemodialysis patients was low (5.2%), but higher than reported for the general population. Prevalence of HGV/HCV infection in hemodialysis patients was low and unrelated to duration of dialysis, number of blood transfusions and levels of transaminases.

Flaviviridae↗
PubMed1996

[Specific inspiratory muscle training in chronic hemodialysis].

Chronic renal failure can result in a variety of conditions leading to muscle weakness. We investigated inspiratory muscle (IM) performance and functional capacity in chronic renal failure before and after specific inspiratory muscle training (SIMT). 9 men and 1 woman, ranging in age from 22-78 years, while on chronic hemodialysis received SIMT 3 times a week, for 3 months, while 10 others received sham training. Static inspiratory pressures, IM endurance and functional capacity were reduced in most subjects. Following SIMT, IM performance improved significantly and was associated with improved functional capacity, but not in the control group. We conclude that patients with chronic renal failure undergoing maintenance hemodialysis have reduced IM performance, and SIMT improves functional capacity.

Adult↗
PubMed1980

Voluntary hypohydration in 10- to 12-year-old boys.

This study was performed to determine whether a) children voluntarily dehydrate while exercising in hot climate; b) such dehydration affects their well-being and thermoregulation. Eleven 10p to 12-yr old, partially acclimatized boys underwent two work-in-the-heat protocols (cycle rides, 45% aerobic capacity at 39 degrees C, 45% rh). During one session they drank only voluntarily when thirsty (VD). In the other, drinking was forced (FD) to replenish fluid losses. VD induced a progressively increasing fluid loss (0.3% of body wt.h-1) due to insufficient drinking (72% of intake in FD). URinary output was lower (55.7 vs. 81.6 ml.h-1) and its osmolality higher (880 vs. 523 meq.1-1) than during FD. Sweat rate, rectal (Tre) and mean skin (T-sk) temperatures, heart rate, rate of perceived exertion, sweat gland counts, blood hemoglobin, hematocrit (Hct), serum electrolytes, and total proteins did not differ between sessions. However, the rise of Tre, Hct, and proteins positively correlated with hypohydration level. It is concluded that exercising children progressively dehydrate when not forced to drink. At equal levels of % weight loss they have greater Tre rise than do lean adults.

Age Factors↗