Iryna Grytsyuk Student of the 4th year of University

1. Specific Features of Bloodcirculatory
System Functioning in Surgeons
Working Daily Duties
Iryna Grytsyuk
Student of the 4th year of University

2. Background
It is known that higher levels of blood pressure among
surgeons are more common compared to other medical
professionals (Derevyannykh E. V. e.a., 2008). Shiftwork
is also known factor of circulatory system pathology
development (Knutsson A., 2003).
Aim of study
to reveal the specific features of bloodcirculatory
system functioning in surgeons working 24-hour duties

3. Hypothesis
It was hypothesized that parameters of bloodcirculatory system
functioning in surgeons working 24-hour duties could manifest
unfavorable changes
Importance of research
Found results could allow to specify the directions to improve
the surgeons’ disease prevention measures

4. Subjects
66 surgeons aged 23-74 y.o. working 24-hour duties (8:00 -
8:00) scheduled as following: 24 working hours, 72 hours off
Procedure
The measures were conducted at the workplaces of surgeons
when working situation allowed during the first hours of the
daily duties

5. Methods
Registered parameters:
 Heart rate (HR)
 Blood pressure systolic and diastolic (BPs, BPd)
 Height
 Weight
Calculated parameters and characteristics:
 Systolic blood volume SBV=100 +0,5*(BPs-BPd)-0,6*BPd – 0,6*Age
 Circulatory minute volume CMV=SBV*HR
 Periphery vascular resistance PVR=(0,42*(BPs-BPd)+BPd)*1333*60/CMV)
 Kerdo’s Vegetative Index KVI=(1-BPs/HR)*100%
 Circulatory failure index CFI=BPs/HR
 BP difference in left and right hands (for BPs and BPd)
 The type of bloodcirculation selfregulation (normal [mixed] or broken – cardiac
or vascular)

6.  Blood pressure scores were analyzed using WHO
classification (1999)
Chalmers J. et al. WHO-ISH Hypertension Guidelines Committee. 1999 World Health Organization -
International Society of Hypertension Guidelines for the Management of Hypertension. J Hypertens,
1999, 17:151-185.
 Hemodynamic parameter scores were analyzed by
classification of Buzunov V. (1991)
Buzunov V. A. Production factors and age work ability. Kyiv : Zdorovya, 1991, 161.
 Data were processed by methods of variation statistics at the
level of significance of p<0,05.

7. Hemodynamic parameters in surgeons due to the mean-group data (N = 66)
№ Hemodynamic parameter Min Max M+m
Qualification of
the mean group
score
Reference
1 BPS - left hand (mm Hg) 93 185 134+2 high normal
WHO Guidelines,
1999
2 BPD - left hand (mm Hg) 55 123 83+1 normal
WHO Guidelines,
1999
3 HR - left hand (beats / min) 49 103 75+1 normal
4 BPS - right hand (mm Hg) 105 191 136+2 high normal
WHO Guidelines,
1999
5 BPD- right hand (mm Hg) 57 122 83+1 normal
WHO Guidelines,
1999
6 BPS difference in left and right hands (mm Hg) 0 28 8,5+0,9 normal
7 BPS difference in left and right hands (mm Hg) 0 21 6,0+0,6 normal
8 Systolic blood volume (ml) 25 78 51+1 moderate class
V.O. Buzunov,
1991
9 Circulatory minute volume (ml) 1421 5758 3835+123 moderate class
V.O. Buzunov,
1991
10 Periphery vascular resistance (KPa * s / l) 1087 5954 2391+116 lower than
moderate class
V.O. Buzunov,
1991
11 Kerdo’s Vegetative Index (c.u.) -89 25 -13,0+2,9 vagotonia I. Kerdo, 1966
12 Index circulatory failure (c.u.) 1,29 3,20 1,82+0,05 circulatory strain K.S. Tebenova et
al., 2015
Results

8. Data presented in the table evidence:
due to the mean-group data,
majority of hemodynamic parameters shown normal levels.
However,
 peripheral vascular resistance (2391+116 kPa*s/l) shown the
below middle level,
 Kerdo’s vegetative index (-13+2,9) - the pronounced vagotonia,
 failure circulatory index (1,82+0,05) - the strain in
bloodcirculatory selfregulation.

9. Distribution of surgeons by blood pressure levels
according to WHO classification (1999)
2
18
23
20
26
9
3
0
5
10
15
20
25
30
<100/60 opt N High N Hyp 1 Hyp 2 Hyp 3
%
Hypertension was found in 38%
of surgeons.
This figure is higher compared to
other physicians.
For example, under single-
examination hypertension was
found in 10% of physicians of
medical institutions in ther other
big city of similar life standards
Zodionchenko V.C., Livandovskiy Yu.
Arterial hypertension in doctors //
Vrach (Doctor), 2001, 1, 45-46.
N=66

10. Distribution of surgeons by the functional state of the circulatory
system according to classification of V.O.Buzunov (1991)
0%
1%
9%
54%
14% 14%
8%
0%
10%
20%
30%
40%
50%
60%
Very high High Above
middle
Middle Below
middle
Low Very low
Functional state of
bloodcirculatory system
in 54% of surgeons was
found in the area of the
middle class,
in 10% - in the zone of
higher class,
In 36% of surgeons - in
the area of the lower
than middle class.
N=66

11. Distribution of surgeons by type of bloodcirculation selfregulation
6%
18%
76%
Normal
Cardiac
Vascular
N=66
Broken bloodcirculation
selfregulation was found in 94% of
surgeons.
This figure is higher compared to
other mental professionals due to
literature data:
 62 % - in constructor-designers ,
 81% - in engineer-
mathematicians,
 82% - in air traffic controllers
Kovaliova A.I. Factors of formation of
labor tension and the body strain in air
traffic controllers // Gigiena truda
(Labour Hygiene) : Collection. Kyiv:
Zdorovja, 2001, 32, 164-175.

12. Distribution of surgeons by the asymmetry in blood pressure
in the upper extremities
50%50%
asymmetry
normаl
N=66
Criterion of the asymmetry:
difference in BPs or BPd
scores between left and
right hands is higher than
10 mm Hg.
Asymmetry was found in
50% of surgeons.
At the same time, in the
hypertensive group,
according to literature, it
was found in 16% of
patients.
Сheremisina A.Yu., e.a. Сomparative
analysis of parallel double daily
monitoring at the shoulder artery in
patients with hypertension I, II // [J. of
Modern Clinical Medicine], 2013.

13. Conclusion
The results reflect the unfavorable changes in
bloodcirculatory system in surgeons working daily
duties that manifests the need for preventive
measures aimed primarily to the bloodcirculation
selfregulation maintenance

14. References
• Buzunov V. A. Production factors and age work ability. Kyiv : Zdorovya, 1991, 161.
• Chalmers J. et al. WHO-ISH Hypertension Guidelines Committee. 1999 World Health Organization -
International Society of Hypertension Guidelines for the Management of Hypertension. J Hypertens, 1999,
17:151-185.
• Сheremisina A.Yu., Saifutdinov R. G., Ismagilov M.F. Сomparative analysis of parallel double daily monitoring
at the shoulder artery in patients with hypertension I, II // Vestnik sovremennoy klinicheskoy meditsiny
(Journal of Modern Clinical Medicine), 2013, 6 (5), 31-34.
• Derevyannykh E. V. , Polikarpov L. S. , Petrova M. M. The frequency of arterial hypertension among male
health care workers in a large industrial city // Sibirskoe meditsinskoe obozrenie (Siberian Medical Review),
2008, 52, №4.
• Kérdö, I. Ein aus Daten der Blutzirkulation kalkulierter Index zur Beurteilung der vegetativen Tonuslage von
I.Kérdö // Acta neurovegetativa, 1966, - 29, №2. - S. 250-268.
• Knutsson A. Health disorders of shift workers / A. Knutsson // Occup. Med. – 2003. – 53, № 2. – Р. 103–108.
• Kovaliova A.I. Factors of formation of labor tension and the body strain in air traffic controllers // Gigiena
truda (Labour Hygiene) : Collection. Kyiv: Zdorovja, 2001, 32, 164-175.
• Tebenova K.S., Ilyasova B.I., Zarkenova Zh.T., Zarkenova L.S. Functional state of the circulatory system in video
workers of display terminal during a shift // Uspekhi sovremennogo estestvoznaniya (The Success of Modern
Natural Science), 2015, 1, 382-386.
• Zodionchenko V.C., Livandovskiy Yu. Arterial hypertension in doctors // Vrach (Doctor), 2001, 1, 45-46.

15. Thank you !
I wish to thank researchers from the Institute for Occupational
Health who invited me to participate in this significant and
interesting research.
I am sincerely grateful to surgeons who contributed in the research
Acknowledgements