We investigated the influences of hot-spring bathing on the incidences of abortion and premature birth using questionnaires returned from 768 puerperal in-patients.
These patients were classified into four groups: 24 taking a hot-spring bath daily (group 1), 134 taking a bath with additives (group 2), 178 taking a plain water bath daily (group 3), and 35 taking a shower daily (group 4).
The incidence of threatened abortion among the ambulatory patients in each group was 4.2% for group 1, 11.9% for group 2, 9% for group 3, and 2.9% for group 4.
The incidence of threatened abortion among the hospitalized patients in each group was 4.2% for group 1, 6.7% for group 2, 4.5% for group 3, and 8.6% for group 4.
The incidence of threatened premature birth among the ambulatory patients in each group was 12.5% for group 1, 17.2% for group 2, 15.7% for group 3, and 14.3% for group 4.
The incidence of threatened premature birth among the hospitalized patients in each group was 0% for group 1, 7.5% for group 2, 3.4% for group 3, and 2.9% for group 4.
The incidence of vaginitis among the patients in each group was 50% for group 1, 43.4% for group 2, 46.6% for group 3, and 44.1% for group 4.
The incidence of premature rupture of membrane (PROM) among the patients in each group was 4.2% for group 1, 21.1% for group 2, 12.9% for group 3, and 22.9% for group 4.
The incidence of premature birth among the patients in each group was 0% for group 1, 3% for group 2, 2.8% for group 3, and 2.9% for group 4.
Among the 42 multiparas experiencing single delivery and being treated for threatened abortion, those who for more than 10 minutes daily showed a significant difference from ambulatory patients being treated for threatened abortion that required hospitalization.
Many of the 63 primiparas who did not use a labor accelerating medicine but bathed for more than 10 minutes daily delivered their babies within 1000 minutes.
Conclusion
The above suggests that pregnant women may bathe in hot-springs without problem but bathing for less than 10 minutes is recommended during early stage of pregnancy.

At Anjo Kosei Hospital, all staff has been working concertedly on a project to establish a community hospital in line with our future vision. Hospital staff in charge of the Medical Affairs Division has been involved in measures aimed at achieving the slogan “health and happiness of local residents” as part of this project. To address this, three goals were set as follows: improvement of recoveries in accounts receivable management, a reduction of money held in trust, and a decrease in the number of outsourced transactions. To achieve the goals described above, the following specific measure were carried out: (1) collection of accounts receivable using convenience store settlement; (2) collection of high-cost medical expenses by wider use of Eligibility Certificates for Ceiling-Amount Applications and promotion of the Major Medical Cost Loan System for national health insurance holders; and (3) support in acquiring family registration for nonregistered family members and for health insurance benefits. Recoveries of accounts receivable through convenience store settlement was about 90,000 yen/month, and our support activities for family registration and health insurance benefits provided the recoveries of about 80,000 yen/month. Furthermore, the promoted use of the certificate and loan system resulted in recoveries of about 17 million yen/year. The average commission fee and number of outsourcing was 890,188 yen and 12 cases, respectively, from April to August 2016. However, in 2017, it was 305,615 yen and 10 cases, respectively. Our project aimed at achieving slogan-elicited patient voluntary payment of medical expenses, leading to improved recoveries, with reduced money held in trust and fewer outsourced transactions.