Postprandial hypotension in elderly subjects: spectral analysis of heart rate variability and electrogastrograms

Abstract

It is suggested that the down-regulation of catecholamine may be one of the causes of postprandial hypotension in the elderly. The response to secreted catecholamine and the compensatory response to decreased blood flow in the systemic circulation were impaired in the elderly group, which finding may explain the high incidence of postprandial hypotension in the elderly subjects.

Hemodynamic effects of liquid food ingestion in mid-thoracic paraplegia: is supine postprandial hypotension related to thoracic spinal cord damage?

“…12 However, in the last study, young subjects showed no postprandial HR LF/HF changes. HR LF did not change significantly after meal in these studies, and HR HF decreased significantly only in the first previous study.…”

“…The increase in sympathovagal balance, represented by HR LF/HF, tended to be more prominent in the paraplegia patients, who exhibited PPH, as in the older subjects in the second previous study, who also suffered from PPH. 12 These phenomena probably represent the dynamics of the compensatory response of the sympathetic and parasympathetic autonomic limbs to food ingestion, and its associated circulatory decompensation.…”

Gastric Myoelectrical Activity Increases after Moderate-Intensity Exercise with no Meals under Suppressed Vagal Nerve Activity

“…The arrangement of the four electrodes and one reference electrode is shown in Fig. 1 [3,11]. Four channel monopolar recordings were conducted with a portable recording device (Nipro EG, Nipro, Osaka, Japan).…”

“…The instability coefficient (IC) of the EGG amplitude and frequency was calculated as the ratio of the standard deviation and the mean of each value: IC = SD/mean [15]. The mean values of the four channels were calculated in each period [11]. Electrocardiography.…”

Postprandial hypotension among older residents of a nursing home in Korea

“…They reported that 96% of nursing home patients, mean age 78 ± 9, experienced falls in SBP after a meal, while the patients who did not have a meal did not experience any drop in BP, nor did any drop occur in younger persons (Lipsitz et al. 1993, Kawaguchi et al. 2002).…”