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abiyad abiyadahmedclasses drugs analgesics icu medicine rescare surgery health anaesthesia angina chest chest pain heart & disease pathology of heart myocardial infarction heart attack biomedical biomedical waste healthcare waste segregation cardio cardiovascular pathology heart disease heart bsc pt bsc pa bsc ott bsc cct notes vims operations postop. anxiety medical biology principles premedication premed amnesia sedation pain anaesthetic anesthesiology anesthesia alveolar alvoli lungs pulmonary segments bronchopulmonary lungs anatomy anatomy heart diseases infectious hospitality hospital and infection prevention infection control infection sedative