This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spinal, Epidural, & Caudal Blocks, Subject name: Anaesthesia
Not a contraindication for combined spinal and epidural anaesthesia: (CSE) (D. REPEAT 2009) 
Select and explain. 
A. Platelet count <50,000, B. Patient on clopidogrel, C. Local infection, D. Patient on antihypertensive medication
D: Patient on antihypertensive medication
Answer: D: Patient on antihypertensive medication 
Explanation: Ref: Ajar Yadav, Short Textbook of Anaesthesia, 1st edition. Page 125 and Miller Textbook of Anaesthesia, 6th edition, Page 1654Explanation:Patients on single antiplatelet drug is not a contraindication to central neuraxial blockade, whereas patients on multiple antiplatelet drugs are contraindicated for neuraxial anaesthesia.Patients on Anticoagulants, Fibrinolytic agents and Thrombocytopenia (platelet count <80.000) are at risk of bleeding and neuraxial hematoma with a possibility of spinal cord compression.Such patients are contraindicated for neuraxial anaesthesia.Patients with raised intracranial pressure carry a risk of coning of the brainstem and death. Such patients are contraindicated for neuraxial anaesthesia.CONTRAINDICATIONS FOR CENTRINEU-RAXIAL ANAESTHESIAAbsolute ContraindicationsRaised intracranial tension.Shock.Severe stenotic valvular heart disease.Marked skin infection.Severe spinal deformity.Blood dyscrasias.Anticoagulants.Multiple antiplatelet drugs.Relative ContraindicationsPre-existing neurological deficit.Sepsis.Spinal deformity.Pregnancy induced hypertension.Platelet count < 80,000.Impaired coagulation.Fibrinolytic agents.