Changes in Body Temperature and Arterial Blood Flow Rate of 42°C Bathing Comparison of a Hot Spring Plunge Bath and Home Bathtub Bath / 日本温泉気候物理医学会雑誌

  【Introduction】One of the effects of the hot spring provides worm temperature. This effect raises temperature, and temperature control function operates and causes increase of the bloodstream. This time, these changes examined the thing by the size of the bathtub and the spring quality of the hot spring.   【Subjects and Methods】The subjects were 10 healthy adult men (mean age: 25.2 years). They bathed for 10 min in bathtubs at 42°C. The enforcement used plunge bath (approximately 1,700 L: simple alkaline hot spring) and home bathtub (approximately 300 L: hot water, 0.1% artificially chlorinated spring). Measurement item of the maximum arterial blood flow rate using the Ultrasonic Rheometer Smart Doppler 45, deep body temperature using the deep body temperature monitor core temperature CM-210, I compared each value 10 min during the bathing, and during a 10-min, 20-min, 30-min resting period after bathing, furthermore, I found the conjugation on each condition resting period after bathing.   【Result】The rise in deep body temperature and maximum arterial blood flow rate showed the result that a hot spring of the plunge bath was more meaningful than the value of the home bathtub after 10 min of bathing. The deep body temperature of the hot spring of the plunge bath significantly rose from bathing 3 min after. In deep body temperature with the resting period after bathing, in the hot spring of the plunge bath, a meaningful rise was maintained in hot water 13 min for population chloride spring 16 min of the home bathtub for 15 min.  【Discussion】In thinks that a population spring let you maintain a temperature rise that it disturbs a drop of the water temperature by abundant quantity of water in the plunge bath that hot spring plunge bath had a bigger deep body temperature rise, maximum arterial blood flow rate than home bathtub, and the deep body temperature rise in the home bathtub was continued.

The impact of blood flow rate during hemodialysis on all-cause mortality

BACKGROUND/AIMS: Inadequacy of dialysis is associated with morbidity and mortality in chronic hemodialysis (HD) patients. Blood flow rate (BFR) during HD is one of the important determinants of increasing dialysis dose. However, the optimal BFR is unclear. In this study, we investigated the impact of the BFR on all-cause mortality in chronic HD patients. METHODS: Prevalent HD patients were selected from Clinical Research Center registry for end-stage renal disease cohort in Korea. We categorized patients into two groups by BFR < 250 and ≥ 250 mL/min according to the median value of BFR 250 mL/min in this study. The primary outcome was all-cause mortality. RESULTS: A total of 1,129 prevalent HD patients were included. The number of patients in the BFR < 250 mL/min was 271 (24%) and in the BFR ≥ 250 mL/min was 858 (76%). The median follow-up period was 30 months. Kaplan-Meier analysis showed that the mortality rate was significantly higher in patients with BFR < 250 mL/min than those with BFR ≥ 250 mL/min (p = 0.042, log-rank). In the multivariate Cox regression analyses, patients with BFR < 250 mL/min had higher all-cause mortality than those with BFR ≥ 250 mL/min (hazard ratio, 1.66; 95% confidence interval, 1.00 to 2.73; p = 0.048). CONCLUSIONS: Our data showed that BFR < 250 mL/min during HD was associated with higher all-cause mortality in chronic HD patients.

The Effect of Increasing Blood Flow Rate on Dialysis Adequacy in Hemodialysis Patients with Low Kt/V / 대한신장학회잡지

BACKGROUND: Dialysis adequacy indexed by Kt/V in hemodialysis patients is recommended as a single-pool Kt/V of at least 1.2 per session thrice weekly. But many patients can not achieve this adequacy target. Although dialysis time is the most important as a factor influencing Kt/V, it is difficult to prolong dialysis time in practice because of its economic impact and poor patient compliance. The aim of this study is to investigate the effect of increasing blood flow rate on dialysis adequacy in hemodialysis patients with low Kt/V. METHODS: This study enrolled 36 hemodialysis patients with single-pool Kt/V less than 1.2 per session thrice weekly, which was measured in dialyzer blood flow rate of 200-230 mL/min. We increased 15% of blood flow rate in patients less than 65 kg of body weight and 20% in patients more than 65 kg. And then we compared Kt/V and urea reduction ratio (URR) between before and after increasing blood flow rate. RESULTS: The mean age was 48+/-11 years (23-73 years) and the number of male was 25. Of the total patients, 24 patients had dry weight less than 65 kg. Mean dialysis duration was 52+/-50 months (3-216 months). Mean Kt/V before increasing blood flow rate was 1.02+/-0.09. It increased to 1.14+/-0.12 after increasing blood flow rate (p or =1.2). Mean URR before increasing blood flow rate was 56.9+/-4.0%. It also increased to 60.8+/-4.1% (p<0.001). CONCLUSION: Our data suggest that increment of blood flow rate to 15-20% of previous flow rate is effective in achieving dialysis adequacy in patients with low Kt/V.