The Ultimate source of Medical Mnemonics and Memory Tips in Anatomy, Physiology, Biochemistry, Pathology, Microbiology, Pharmacology, Forensic Medicine, Community Medicine (Preventive and Social Medicine), ENT, Ophthalmology, Psychiatry, Dermatology, Radiology, General Medicine, Surgery, Gynaecology & Obstetrics, Pediatrics, Gastroenterology and Orthopedics
Lusitropic: loose is relaxed. Definition: relax heart. Inotropic: when heart wall contracts, moves inward. Definition: contract heart. Chronotropic: 'chrono-' means 'time'. Defintion: heart rate (of SA node impulses).
Dromotropic: only one left, it must be conduction speed by default.