case_images: PMC7292985_01
case_images: Total number of single premature ventricular contractions (PVC), bigeminy, trigeminy, and total ventricular ectopic (VE) beats assessed during the 24-hour Holter monitor from April 2013 to October 2018. The two concussions (mTBI) are dated in the Figure.
case_images: CRIM2020-7154120.001.jpg
case_images: PMC7292985_01_CRIM2020-7154120.001.jpg
case_images: fig1
case_images: This is in stark contrast to his 24-hour Holter in 2013 where there were negligible ectopic beats (Table 1; Figure 1). The patients 24-hour Holter (6th July 2017) showed another significant increase in ventricular ectopy at 18.1% (Table 1; Figure 1). Furthermore, there was a significant increase in both bigeminy and trigeminy ventricular ectopic beats (Figure 1) that was not apparent before his concussion head injury. The results for this case study report are presented in Tables 1 and 2 and Figures 1 and 2. As noted in Table 1 and Figure 1, there was a significant increase in ventricular (VE) and supraventricular (SVE) ectopy within months of the patient sustaining his two concussions in September and October 2016.
case_images: Ratio of low frequency (LF) to high frequency (HF) power (LF : HF) heart rate variability after the patient sustained his two mTBI's (September and October 2016).
case_images: CRIM2020-7154120.002.jpg
case_images: PMC7292985_01_CRIM2020-7154120.002.jpg
case_images: fig2
case_images: The results for this case study report are presented in Tables 1 and 2 and Figures 1 and 2. In addition to the VE and SVE, single prematureatrial contractions (PACs) and bigeminy and trigeminy beats were also significantly increased following the concussion incidents.  Table 2 and Figure 2 represent the heart rate variability (HRV) data. LF : HF ratio decreased from 1.32 to 1.13 (Figure 2), suggesting a decreased reliance on LF dominance, and improved HRV/ANS function. LF power is a net effect of several intrinsic modulatory factors from both sympathetic and parasympathetic branches of the