Terms starting with D

Deep Vein Thrombosis (DVT)

The formation of a blood clot (thrombus) within a deep vein, most commonly in the calf or thigh, which may cause pain, swelling, and redness in the affected limb. DVT is a significant risk after surgery and prolonged immobility during travel, and carries the potentially life-threatening complication of pulmonary embolism if the clot dislodges.

Dental Impression

A negative imprint of teeth and surrounding tissues taken using an alginate or silicone material in a tray, used by a dental laboratory to fabricate crowns, bridges, veneers, dentures, or aligners. Modern digital intra-oral scanning is increasingly replacing physical impressions and produces direct STL files for CAD/CAM fabrication.

DHI

Direct Hair Implantation (DHI) is a hair transplant technique in which harvested follicular units are implanted directly into the recipient area using a specialised Choi implanter pen, without the need to pre-make recipient site incisions. This method allows for precise control of angle, depth, and direction, and is associated with higher graft survival rates in experienced hands.

Diastasis Recti

A condition in which the two parallel bands of the rectus abdominis muscles separate along the midline of the abdomen, creating a visible bulge or ridge, commonly resulting from pregnancy or significant abdominal weight gain. Surgical repair, often performed in conjunction with abdominoplasty, involves suturing the muscles back together to restore core integrity.

Discharge Summary

A clinical document prepared by the treating team upon a patient's discharge from hospital, summarising the diagnosis, treatments administered, procedures performed, medications prescribed, and follow-up requirements. For medical tourists, obtaining a comprehensive discharge summary in the patient's native language is essential for continuity of care upon returning home.

DNV GL Healthcare

DNV GL Healthcare is an international accreditation body that evaluates hospitals against its NIAHO (National Integrated Accreditation for Healthcare Organisations) standards, integrating ISO 9001 quality management principles with patient care requirements. It is recognised as a deemed authority by the US Centers for Medicare and Medicaid Services and is used by hospitals seeking international quality recognition.

Drain (Surgical)

A thin tube inserted into a surgical wound or body cavity following an operation to remove excess blood, fluid, or air that could otherwise accumulate and increase the risk of infection or haematoma. Drains are typically removed within a few days post-operatively once drainage output has reduced to an acceptable level.

Dry Socket

Alveolar osteitis — a painful complication of tooth extraction (most commonly lower third molars) where the blood clot that should form in the socket dislodges or fails to form, exposing the underlying bone. Pain typically begins 2-4 days post-extraction and is intense. Treatment involves irrigation and packing with medicated dressings; prevention includes avoidance of smoking and vigorous rinsing in the first few days.

Duty of Care

The legal and ethical obligation of a healthcare provider to take reasonable steps to ensure the safety and wellbeing of patients under their care. A breach of this duty that causes harm may form the basis of a medical negligence claim.

DVT

Deep vein thrombosis: a blood clot that forms in a deep vein, most commonly in the leg. DVT is associated with immobility (long-haul flights, post-operative bed rest), some surgical procedures (orthopaedic, abdominal, pelvic), pregnancy, hormone therapy, and certain underlying conditions.

In medical tourism: Medical tourists are at elevated DVT risk both during long-haul flights to and from the clinic country and in the post-operative window. Symptoms include calf pain, swelling, warmth, and discoloration; pulmonary embolism is a serious complication. Prevention includes mobilisation, compression stockings, and in some cases prescribed anticoagulation.

DVT Prophylaxis

Preventive measures against deep vein thrombosis (DVT) given perioperatively, particularly to patients undergoing major surgery or those at elevated thrombotic risk. Standard prophylaxis combines mechanical methods (graduated compression stockings, intermittent pneumatic compression) with pharmacological agents (typically low-molecular-weight heparin such as enoxaparin) per NICE guideline NG89. Important for medical-tourism patients facing long-haul return flights post-operatively.