| OLP | left occipitoposterior [fetal position] [Lat. occipito-laeva posterior] |
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| OLT | left occipitotransverse [fetal position] [Lat. occipito-laeva transversa]; orthotopic liver transpla... |
| OPS | operations; optical position sensor; osteoporosis-pseudolipoma syndrome; outpatient service; outpati... |
| PDH | past dental history; phosphate dehydrogenase; position-of-the-dynamometer-handle [test]; progressive... |
| PMP | pain management program; patient management program; patient medication profile; peripheral myelin p... |
| heart-whole | 1. Having the heart or affections free; not in love. 2. With unbroken courage; undismayed. 3. Of a single and sincere heart. "If he keeps heart-whole towards his Master." (Bunyan) See: Whole. Source: Websters Dictionary (01 Mar 1998) |
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| heart-wounded | Wounded to the heart with love or grief. Source: Websters Dictionary (01 Mar 1998) |
| pseudo-heart | <zoology> Any contractile vessel of invertebrates which is not of the nature of a real heart, especially one of those pertaining to the excretory system. Origin: Pseudo- + heart. Source: Websters Dictionary (01 Mar 1998) |
| second heart sound | The second sound heard on auscultation of the heart; signifies the beginning of diastole and is due to closure of the semilunar valves. Synonym: second sound. (05 Mar 2000) |
| holiday heart syndrome | <syndrome> Arrhythmias of the heart, sometimes apparent after a vacation or weekend away from work, following excessive alcohol consumption; usually transient. (05 Mar 2000) |
| Holmes heart | A variant of double inlet left ventricle where the ventricular-arterial connection is concordant and the right ventricle is rudimentary. Horizontal heart, description of the heart's electrical position; recognised in the electrocardiogram when the QRS in lead aVL resembles that in V6 and QRS in aVF resembles that in V1; also, loosely, when the electrical axis lies between -30 |
| pulmonary heart | The right atrium and ventricle, receiving the venous blood and propelling it to the lungs. See: cor pulmonale. (05 Mar 2000) |
| pulmonary surface of heart | The lateral surface of the heart, directed toward the lungs; on the left it is principally the left ventricular wall; on the right it is the right atrial wall and the upper part of the right ventricular wall. Synonym: facies pulmonalis cordis. (05 Mar 2000) |
| semihorizontal heart | Loosely refers to the heart's electrical axis when this is directed at approximately 0 |
| semivertical heart | Loosely descriptive of the heart's electrical axis when this is directed at approximately +60 |
| shaggy heart | <radiology> Basilar interstitial lung disease, characteristic of: asbestosis (12 Dec 1998) |
| hyperkinetic heart syndrome | <syndrome> Loosely, a syndrome in which the heart appears to be "overworking", i.e., beating excessively fast and/or causing subjective awareness of continual cardiac activity. (05 Mar 2000) |
| hyperthyroid heart | Response of the heart to hyperthyroidism, essentially the result of sympathetic stimulation producing rapid heart rates and ultimately cardiac failure and atrial fibrillation if untreated. (05 Mar 2000) |
| skeleton of heart | A complex framework of dense collagen forming four fibrous rings (annuli fibrosi), which surround the ostia of the valves, a right and left fibrous trigone, formed by connecting the rings, and the membranous portions of the interatrial and interventricular septa; it is found in association with the base of the ventricles, i.e., at the level of the coronary sulcus; its functions include: 1) contributing reinforcement of the valvular ostia while providing attachment for the leaflets and cusps of the valves; 2) providing origin and insertion for the myocardium; and 3) serving as a sort of electrical "insulator," separating the electrically conducted impulses of the atria and ventricles and providing passage for the common atrioventricular bundle of conductive tissue through the right fibrous trigone and membranous interventricular septum. Synonym: cardiac fibrous skeleton, cardiac skeleton, skeleton of heart. (05 Mar 2000) |
| hypoplastic heart | A small heart, as seen in Addison's disease. (05 Mar 2000) |