Arterial stiffness, as monitored by cardio–ankle vascular index, is affected by obstructive sleep apnea, blood glucose control, and body weight – a case with 8 years follow up

Figures & data

Table 1 Changes in sleep parameters evaluated by polysomnography and serum glucose level

	PSG (in 2010)	PSG with CPAP (in 2015)
AHI (/min)	56.9	7.2
Minimum SpO2 (%)	81	89
Mean SpO2 (%)	94	94
Snore index (/hour)	342.1	222.8
Max apnea time (seconds)	43.9	26.3
Total sleep time (minutes)	411.5	477
Sleep period time (minutes)	498.5	573
Time in bed (minutes)	618.0	616.5
Sleep stage (light to deep sleep)
Stage 1 (%)	49.7	32.0
Stage 2 (%)	41.4	50.9
Stage 3 (%)	0.0	0.0
Stage 4 (%)	0.0	0.0
SREM (%)	8.9	17.1
Glucose (mg/dL)	158	127
HbA1c (%)	8.4	7.6

Abbreviations: AHI, apnea–hypopnea index; CPAP, continuous positive airway pressure; HbA1c, hemoglobin A1c; PSG, polysomnography; SREM, rapid eye movement sleep.

Figure 1 Clinical course of the patient.

Note: CAVI is affected by obstructive sleep apnea, blood glucose control, and body weight.
Abbreviations: CAVI, cardio–ankle vascular index; CPAP, continuous positive airway pressure; CABG, coronary artery bypass grafting; HbA1c, hemoglobin A1c.