Biomedical subjects
Suzanne Martin
Publications and source records attributed to Suzanne Martin.
Holographically recorded photopolymer diffractive optical element for holographic and electronic speckle-pattern interferometry.
A diffractive optical element is described that can be used to implement a very simple self-aligning electronic speckle-pattern interferometer and holographic interferometer that requires only a laser source and a camera in the optical setup.
Circulatory assistance with a permanent implantable IABP: initial human experience.
PURPOSE: The Kantrowitz CardioVAD (KCV) is an electrically powered, pneumatically driven circulatory assist device which provides diastolic augmentation and systolic unloading to the failing heart. It consists of a 60cc-pumping chamber, a percutaneous access device (PAD), and an external controller. The pumping chamber, is surgically implanted in the descending thoracic aorta with the patient on cardiopulmonary bypass. Its physiologic function is analogous to that of the intra-aortic balloon pump (IABP). METHODS: Between 1997 and 2000, 5 men (age 59 to 73) with end-stage cardiomyopathy refractory to maximal drug treatment and with documented hemodynamic improvement on an IABP were enrolled in a feasibility study. RESULTS: Mean bypass time was 157 minute (range 120 to 196 minute); mean cross-clamp time was 101 minute (range 69 to 144). Patient 1 died intra-operatively. Compared with preoperative values, at 1 month, cardiac index increased (1.7 to 2.6 L/min/m(2)) and there were significant decreases in creatinine (2.6 to 1.5 mg/dL), pulmonary capillary wedge pressure (PCWP) (32 to 14 mm Hg), and right atrial pressure (RA) (19 to 9 mm Hg). NYHA class improved (IV to II). The mean increase in cardiac index with the KCV OFF to ON was 0.53 L/min/m(2) (36%). Two patients were discharged home. The device was used intermittently without thromboembolic complications. The only device related complications were attributed to PAD design and have been corrected. CONCLUSION Our initial human trial demonstrates successful implantation of the KCV in end-stage patients, the ability of the device to be used intermittently without anticoagulation, and documents hemodynamic and functional improvement in the status of these patients.
ANA, UAN fight to ensure workplace protection for RNs.
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Using commercially available technology to assist in the delivery of person-centred health and social care.
Videoconferencing (via ISDN at 128 kbit/s) was used between a service provider, the South and East Belfast Health and Social Services Trust, and clients at home. The equipment was used successfully by various health-care workers and was sufficient for the clinical requirements of professional staff. Our experience demonstrated that there are clinical benefits of telecare. The users perceived that the technology added to the quality of their lives. Clients reported feeling less isolated, more secure at home and more in control. The Trust is currently commissioning purpose-built accommodation for adults with cognitive impairment. The residents will be people who are on the verge of requiring institutional care. Presence sensors, appliance and door contacts will allow lifestyle patterns to be monitored. The system will notify the service provider's staff of variations from the norm for each resident.