[Evaluation of the knowledge of patients about the management of treatment with anti-vitamin K drugs in the Service of Cardiology of Ouagadougou].
BACKGROUND
Vitamin K antagonists (VKA), the most widely prescribed oral anticoagulant therapy, represent a major public health problem by the adverse events related to their use. The aim of this study was to clarify the level of knowledge that patients have about the management of their oral anticoagulant treatment.


METHODS
This was a descriptive cross-sectional study performed at Yalgado Ouedraogo university Hospital, over a period of three months starting from March 1st to May 31st 2012. A questionnaire was given to patients receiving VKA treatment for at least a month.


RESULTS
Seventy patients were enrolled in the study of which 30 men. The median age was 49±16 years. Heart disease and venous thromboembolic disease justifying the introduction of VKA treatment were found respectively in 58.6 and 41.4% of the cases. The name of the VKA and the exact reason for the treatment were known respectively in 91.4 and 61.7% of the case. More than half of patients (68.6%) knew that the VKA makes blood more fluid. Forty-six patients (65.7%) cited INR as biological monitoring of treatment but only 28 patients (40%) were aware of INR target values. The majority of patients did not know the risks in case of overdose (72.8%) and underdosing (71.4%). Self-medication by non-steroidal anti-inflammatory drugs was reported by 18 patients (25.7%). Cabbage (74.3%) and lettuce (62.9%) were the main foods reported to be consumed moderately.


CONCLUSIONS
The knowledge of patients on the management of VKA is fragmentary and remains insufficient to ensure the effectiveness of the treatment. The creation of a therapeutic education program is then necessary.
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso; Unité de formation et de recherche en science de la santé, université de Ouagadougou, Ouagadougou, Burkina Faso.
A K
AK
Samadoulougou
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso. Electronic address: tnaibedangwe@yahoo.com.
D T
DT
Naibe
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso.
D G
DG
Mandi
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso.
E
E
Kabore
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso; Unité de formation et de recherche en science de la santé, université de Ouagadougou, Ouagadougou, Burkina Faso.
G R C
GR
Millogo
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso; Unité de formation et de recherche en science de la santé, université de Ouagadougou, Ouagadougou, Burkina Faso.
N V
NV
Yameogo
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso.
J K
JK
Kologo
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso.
A T
AT
Tall
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso.
B J Y
BJ
Toguyeni
Service de cardiologie, CHU Yalgado Ouédraogo, avenue du Capitaine-Thomas-Sankara, 03 BP, 702250 Ouagadougou, Burkina Faso; Unité de formation et de recherche en science de la santé, université de Ouagadougou, Ouagadougou, Burkina Faso.
P
P
Zabsonre
D000328:Adult; D000368:Aged; D000925:Anticoagulants / Q000009:adverse effects* / Q000627:therapeutic use*; D002050:Burkina Faso; D057220:Health Literacy; D006331:Heart Diseases / Q000097:blood / Q000188:drug therapy*; D006801:Humans; D019934:International Normalized Ratio; D008297:Male; D008875:Middle Aged; D010353:Patient Education as Topic; D063046:Patient Medication Knowledge; D011795:Surveys and Questionnaires; D014812:Vitamin K / Q000037:antagonists & inhibitors*
D000925:Anticoagulants; D014812:Vitamin K
AVK; CHU-YO; Level of knowledge; Niveau de connaissance; Patients; VKA; Yalgado Ouedraogo University Hospital