| PPM | permanent pacemaker; phosphopentomutase; physician practice management; pigmented pupillary membrane... |
|---|---|
| PT | pain threshold; parathormone; parathyroid; paroxysmal tachycardia; part time; patient; pericardial t... |
| P&T | permanent and total [disability]; pharmacy and therapeutics |
| PTD | percutaneous transluminal dilatation; permanent total disability; personality trait disorder; preter... |
| PVL | perivalvular leakage; permanent vision loss |
| retention cyst | A cyst resulting from some obstruction to the excretory duct of a gland. Synonym: distention cyst, secretory cyst. (05 Mar 2000) |
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| retention form | The shape of a cavity preparation that prevents displacement of the dental restoration by lateral or tipping forces as well as masticatory forces. (05 Mar 2000) |
| retention groove | One of the groove's forming opposing vertical constrictions in a tooth to aid in retention of a dental restoration. (05 Mar 2000) |
| retention jaundice | Jaundice due to insufficiency of liver function or to an excess of bile pigment production; the bilirubin is unconjugated because it has not passed through the liver cells; van den Bergh test is indirect. (05 Mar 2000) |
| retention point | A provision made within a cavity preparation of a tooth to hold in place the first pieces of gold when placing a direct gold restoration. (05 Mar 2000) |
| retention polyp | A smoothly rounded mucosal hamartoma of the large bowel, which may be multiple and cause rectal bleeding, especially in the first decade of life; it is not precancerous. Synonym: retention polyp. (05 Mar 2000) |
| retention suture | <surgery> A heavy reinforcing suture placed deep within the muscles and fasciae of the abdominal wall to relieve tension on the primary suture line and thus obviate postoperative wound disruption. Synonym: tension suture. (05 Mar 2000) |
| retention vomiting | <gastroenterology, physiology> Vomiting due to mechanical obstruction, usually hours after ingestion of a meal. (05 Mar 2000) |
| chylomicron retention disease | An inherited disorder in which apolipoprotein B-48 is retained in intestine and absent in plasma; results in fat malabsorption. (05 Mar 2000) |
| dental prosthesis retention | The retention of a dental prosthesis in place by design, device, or adhesion. (12 Dec 1998) |
| denture retention | The retention of a denture in place by design, device, or adhesion. (12 Dec 1998) |
| direct retention | Retention obtained in a removable partial denture by the use of attachments or clasps which resist their removal from the abutment teeth. (05 Mar 2000) |
| indirect retention | Retention obtained in a removable partial denture through the use of indirect retainers. (05 Mar 2000) |
| oil retention enema | A rectal injection of mineral oil, introduced at low pressure and retained for several hours before expelling, to soften faeces. (05 Mar 2000) |
| urinary retention | The inability to pass urine from the bladder, most often due to an obstruction of flow. In older males, this may be due to prostate enlargement. Urine retention can also occur as a drug side effect (anticholinergics), after surgical procedures and in the presence of a urethral stricture (narrowing of the urethra). (27 Sep 1997) |