Coagulation Activities of Patients on Psychotropic Drugs in Nigeria

Afolabi O.I, Adedire O.A, Oke O.T, Omisakin C.T, Esan A.J

  Open Access OPEN ACCESS  Peer Reviewed PEER-REVIEWED

Coagulation Activities of Patients on Psychotropic Drugs in Nigeria

Afolabi O.I1, Adedire O.A2, Oke O.T2, Omisakin C.T3,, Esan A.J3

1Deparment of Medical Laboratory Services, General Hospital, Oke-Imesi Ekiti, Nigeria

2Department of Haematology and Blood Transfusion, Obafemi Awolowo University Teaching Hospital, Ile – Ife Nigeria

3Department of Haematology and Blood Transfusion, Federal Medical Centre, Ido – Ekiti, Nigeria


The study is being aimed to assess Prothrombin Time and Activated Partial Thromboplastin Time activity in patients on psychotropic drugs. Fifty (50) samples were used, Forty (40) are from the patients on psychotropic drugs while ten (10) are apparently healthy individual that serves as control. The results obtained showed thatPT and APTT of the test subject have a mean value of 26.01 ± 11.04 in compared with the control subject showed a mean value 11.80 ± 1.3. While the result obtained from APTT test subject showed a mean value of 36.70 ± 17.00 compared with the control subject that have a mean value of 36.7.0 ± 3.81. When these results were compared statistically significant difference were observed P<0.01 which indicate a state of prolongation in PT and APTT.

Cite this article:

  • O.I, Afolabi, et al. "Coagulation Activities of Patients on Psychotropic Drugs in Nigeria." American Journal of Medical Sciences and Medicine 2.2 (2014): 41-43.
  • O.I, A. , O.A, A. , O.T, O. , C.T, O. , & A.J, E. (2014). Coagulation Activities of Patients on Psychotropic Drugs in Nigeria. American Journal of Medical Sciences and Medicine, 2(2), 41-43.
  • O.I, Afolabi, Adedire O.A, Oke O.T, Omisakin C.T, and Esan A.J. "Coagulation Activities of Patients on Psychotropic Drugs in Nigeria." American Journal of Medical Sciences and Medicine 2, no. 2 (2014): 41-43.

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1. Introduction

Blood coagulation can be traced back to about 400BC and the fathers medicine; Hippocrates, Plato, Aristole, Celsus and Galen. Hippocrates was the first person recognized blood of a wounded soldier congeale as if cooled, as well as bleeding from wound stopped, as skin covered the blood. If the skin removed bleeding stated again but Aristole noted that blood cooled when removed from the body when initiated decay resulting in the congealing of the blood, if fibres were removed, there was no clothing [23]. It was not believed to have any physiologic or pathology significant, until a surgeon, recognized in 1930s that clothing was haemostatically important in amputation [23]. Therefore, coagulation is a complex process by which blood forms clots. It is an important part of hemostasis, wherein a damaged blood vessel wall is covered by a platelet and fibrin containing clot to stop bleeding and begin repair of the damage vessel [21]. Also Blood coagulation involves a biological amplification system in which relatively few initiation substance sequentially activate the proteolysis of thrombin, thus in turn, converts soluble plasma fibrinogen into fibrin [10]..Coagulation begins almost instantly after an injury to the blood vessel has damages the endothelium. Exposure of the blood to protein such has tissue factors initiate changes to blood platelet and the plasma protein fibrinogen a clotting factor. Platelets immediately form a plug at the side of injury; this is called primary haemostasis. Secondary haemostasis occurs simultaneously; protein in the blood plasma called coagulation factors or clotting factors, respond in a complex cascade to form fibrin strands, which strengthen plug [6].

Disorder of coagulation can lead to an increase in risk of bleeding hemorrhage or thrombosis. Coagulation disorders are common intensive care patient and may range from isolated thrombocytopenia or prolonged global clotting test to complex defects, such as disseminated intravascular coagulation.

A psychotropic drug is a chemical substance that crosses the blood brain barrier and such acts primarily upon the central nervous system, where it affects brain function, resulting in change in perception, mood, consciousness, cognition and behavior [27].

These substances may be used recreationally to alters one’s consciousness as entheogens and Shamanic purpose of these as a tool for studying the therapeutically as medication. Because psychoactive substance bring about subjective change in consciousness and mood that the user may find advantage. Therefore, the use of psychotropic drugs can extremely help reducing psychotic symptoms and agitation in a patient with several mental illnesses. These drugs may produce serious side effect that can range from mild to severe, also they can added as a significant burden, reducing patient quality of life (24). Numbers of harmful and other side effects have been observed, including lower life expectancy, weight gain, enlarged breast, hyperprolactinaemia, Agranulocytosis, Diabetes and inability to sit still [4].

Psychotropic drugs use is a practice that dates to Prehistoric time there is archeological evidence of the use of psychotropic drugs mostly likely planks dating back at least 10,000 years, and historical evidence of a culture use over.

Psychotropic drugs have different used and are broken into four major groups [19]

(1) Hallucinogen Drugs (2) Antipsychotic Drugs (3) Depressant Drugs (4) Stimulant Drug.

1.1. Specific Objective

The aim of this research work is to assess coagulation activities in patients on psychotropic drugs using PT and APTT with a view to determine susceptibility to hemorrhage or thrombosis.

2. Materials and Method

A total number of fifty blood samples were collected, Forty were from patients on psychotropic drugs while the remaining ten were from subjects not on psychotropic drugs to serves as control,The collection of samples were carried out at psychiatric department, Obafemi Awolowo University Teaching Hospital, Ile Ife, Osun State Nigeria. The collected samples were processed at Department of Haematology and Blood Transfusion Obafemi Awolowo University Teaching Hospital Complex Ile –Ife, Osun State. The result obtained after processing were tabulated. Also the mean and standard deviations of the samples was also process using T-Value.

2.1. Methodology
2.1.1. Prothrombin Time (PT) Test

Plasma is added to a thromboplastin and calcium chloride reagent at 37°C and the time taken for a clot to form is measured. The clotting time in seconds is converted to the International Normalized Ratio (INR), usually by reference to a table provided by the manufacturer of reagent [21].

2.1.2. Activated Partial Thromboplastin Time (APTT) Test

The patient’s plasma provides all the factors for clotting except calcium (removed by citrate) and platelets (removed by centrifugation).Calcium and platelet factor reagent (or a partial thromboplastin) is added to the patient’s plasma, and the time of clot formation is noted [21].

3. Results

In this study, fifty (50) subjects were used, in which forty (40) were test subject while ten (10) were selected as control. Table 1 shows the overall result of PT and APTT + standard deviation. The statistical significant (P<0.01) results were observed in PT and APTT in patient on psychotropic drugs when compared with the control (26.01 ± 11.04), (11.80 ± 1.30), for PT, while (76.83 ± 17.00), (36.70 ± 3.81) for APTT.

Table 1. The overall Result of PT and APTT

4. Discussion

Psychotropic drugs are tranquilizer primarily used to manage psychosis [24]. The medication tends to block D2 receptor in the dopamine of the brain. This means that dopamine released in these pathways is less effective (18).

Coagulation is a complex series of enzymatic reaction involving the proteolytic activation of circulatory coagulation factor (Zymogen) and activity of co-factor leading to the production of thrombin which converts soluble plasma fibrinogen into fibrin [10].

According to Conosoet al 1977, coagulation disorder has been proved to arise from the consumption of psychotropic drugs. This can be association with the thrombocytopenia, platelet dysfunction and hepatomegaly.

The result of this study shown prolonged activated Partial Thromboplastin (APTT) in patient sample on psychotropic drugs in relation to the control and the difference seen were statically significant (P<0.01). This work is in line with the previous work done by Mohammed et al 2005. In their work prolong result was observed in APTT in patient on long time usage of psychotropic drug. It was deducted from their work that the prolongation result observed might be due to the drug induced hemostasis changes. The hemostasis change at this agent is usually associates with immune thrombocytopenia, liver function impairment and coagulation change [3]. The prothrombin time (PT) test of this study show prolonged and differences were seen statistically significant (P < 0.01). This result was in agree with previous work done by Osinobowaleet al 2010. It was deduced from their work that mild pronlonged PT result were observed might due to Pharmacological constitute of some psychotropic drugs especially second generation such as chloropromazine contain anticoagulant.

Also, In this study 28% shown normal result while 72% shown abnormal result in PT whereas, 8% show normal result while 92% show abnormal result in APTT. Prolonged result observed in PT showed that there is deficiency in extrinsic factors such as (II, V, VII, and X). Also prolonged result observed in APTT showed that there is deficiency in intrinsic factors such as II, IX, X, XI and XII. This may due to the early stage of the use of the drug, differences in prescribing drugs medication and nutritional factors.

In conclusion, it is pertinent for psychiatrist to put into the consideration the effect of psychotropic drugs on hemostasis especially coagulation before and during administration of psychotropic drugs.


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