Impact of mental and physical stress on blood pressure and pulse pressure under normobaric versus hypoxic conditions.

OBJECTIVE: Hypobaric hypoxia, physical and psychosocial stress may influence key cardiovascular parameters including blood pressure (BP) and pulse pressure (PP). We investigated the effects of mild hypobaric hypoxia exposure on BP and PP reactivity to mental and physical stress and to passive elevation by cable car. METHODS: 36 healthy volunteers participated in a defined test procedure consisting of a period of rest 1, mental stress task (KLT-R), period of rest 2, combined mental (KLT-R) and physical task (bicycle ergometry) and a last period of rest both at Graz, Austria (353 m asl) and at the top station Dachstein (2700 m asl). Beat-to-beat heart rate and BP were analysed both during the test procedures at Graz and at Dachstein and during passive 1000 m elevation by cable car (from 1702 m to 2700 m). RESULTS: A significant interaction of kind of stress (mental vs. combined mental and physical) and study location (Graz vs. Dachstein) was found in the systolic BP (p = .007) and PP (p = .002) changes indicating that during the combined mental and physical stress task sBP was significantly higher under hypoxic conditions whereas sBP and PP were similar during mental stress both under normobaric normoxia (Graz) and under hypobaric hypoxia (Dachstein). During the passive ascent in cable car less trivialization (psychological coping strategy) was associated with an increase in PP (p = .004). CONCLUSION: Our data show that combined mental and physical stress causes a significant higher raise in sBP and PP under hypoxic conditions whereas isolated mental stress did not affect sBP and PP under hypoxic conditions. PP-reaction to ascent in healthy subjects is not uniform. BP reactions to ascent that represents an accumulation of physical (mild hypobaric hypoxia) and psychological stressors depend on predetermined psychological traits (stress coping strategies). Thus divergent cardiovascular reactions can be explained by applying the multidimensional aspects of the biopsychosocial concept.

Quality of life outcomes in pregnancy and postpartum complicated by hypertensive disorders, gestational diabetes, and preterm birth.

Health problems can develop during a pregnancy, turning it into a high risk. The aim of this study was to explore the influence of hypertensive disorders, gestational diabetes, and preterm birth as risk factors for health-related quality of life (HRQL) and depressive symptoms during late pregnancy and postpartum. A prospective, longitudinal study was performed with three assessments. Ninety women were recruited in the study including 29 controls. HRQL was measured using the WHO-QOL-BREF questionnaire. Depressive symptoms were assessed with the Edinburgh Postnatal Depression Scale (EPDS). Statistical analyses were performed using ANOVA and the chi-square test to explore HRQL and depressive symptoms between three pregnancy risk groups and controls. Women of the preterm group had statistically significant higher depression scores and lower HRQL scores on the physical domain during pregnancy than those without complications. Women with hypertensive disorders showed the second most depressive symptoms. Physical and global HRQL improved and depressive symptoms decreased significantly from late pregnancy and early postpartum period to late postpartum. Pregnant specific health problems, especially the risk for preterm delivery is associated with more depressive symptoms and decreased HRQL in pregnancy. Guidance and communication for these women is important. The counseling should be multi professional to reduce childbirth burdens.