| AH | abdominal hysterectomy; absorptive hypercalciuria; accidental hypothermia; acetohexamide; acid hydro... |
|---|---|
| AHES | artificial heart energy system |
| AHF | acute heart failure; American Health Foundation; American Hepatic Foundation; American Hospital Form... |
| AHR | antihyaluronidase reaction; Association for Health Records; atrial heart rate |
| ALLHAT | Antihypertensive and Lipid Lowering Treatment to Prevent Heart Attack Trial |
| reflex | 1. <anatomy> Reflected. 2. <neurology, physiology> A reflected action or movement, the sum total of any particular involuntary activity. (18 Nov 1997) |
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| reflex, abdominal | Contractions of the abdominal muscles upon stimulation of the skin (superficial abdominal reflex) or tapping neighboring bony structures (deep abdominal reflex). The superficial reflex may be weak or absent, for example, after a stroke, a sign of upper (suprasegmental) motor neuron lesions. (12 Dec 1998) |
| reflex, abnormal | Abnormal, involuntary response to a stimulus which includes hyperreflexia, hyporeflexia, and areflexia. (12 Dec 1998) |
| reflex, acoustic | Intra-aural contraction of tensor tympani and stapedius in response to sound. (12 Dec 1998) |
| reflex angina | Angina pectoris in which the breast pain is comparatively slight, but pallor followed by cyanosis, and coldness and numbness of the extremities, are marked. Synonym: angina spuria, angina vasomotoria, pseudangina, pseudoangina, reflex angina, vasomotor angina. (05 Mar 2000) |
| reflex arc | The route followed by nerve impulses in the production of a reflex act, from the peripheral receptor organ through the afferent nerve to the central nervous system synapse and then through the efferent nerve to the effector organ. (05 Mar 2000) |
| reflex asthma | Asthma occurring as a reflex in disease of the viscera, the nose, or other parts. (05 Mar 2000) |
| reflex, babinski | An abnormal reflex consisting of dorsiflexion of the big toe on stimulation of the sole of the foot. (12 Dec 1998) |
| reflex control | Nerve impulses transmitted to the muscles to maintain normal reflex action. (05 Mar 2000) |
| reflex cough | A cough excited reflexly by irritation in some distant part, as the ear or the stomach. (05 Mar 2000) |
| reflex detrusor contraction | Normal coordinated function of the bladder with sustained contractions of the bladder matched by simultaneous relaxation of the sphincteric outlet mechanisms to empty the bladder. (05 Mar 2000) |
| reflex dyspepsia | Functional dyspepsia excited by reflex irritation from disease elsewhere than in the stomach or intestines. (05 Mar 2000) |
| reflex epilepsy | Seizures which are induced by peripheral stimulation; e.g., audiogenic, laryngeal, photogenic, or other stimulation. Synonym: sensory precipitated epilepsy. (05 Mar 2000) |
| reflex headache | A headache secondary to another organic condition. Synonym: reflex headache. (05 Mar 2000) |
| reflex incontinence | In neurogenic disorders, loss of urine due to detrusor hyperreflexia and/or involuntary urethral relaxation in the absence of the desire to void. (05 Mar 2000) |