Continual monitoring of intraocular pressure: effect of central venous pressure, respiration, and eye movements on continual recordings of intraocular pressure in the rabbit, dog, and man.

Cooper, Richard L.; Beale, David G.; Constable, Ian; Grose, G. C.

doi:10.1136/bjo.63.12.799

Cited by 42 publications

(33 citation statements)

References 4 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The waveform of the pulsatile ΔD cl is quite similar to the IOP variations due to the heartbeat and respiration, as reported in Ref. 6. According to the frequency analysis, the relative displacement is further decomposed into two components: the heartbeat-induced and the respiration-induced, as respectively shown in Figs.…”

mentioning

confidence: 77%

See 1 more Smart Citation

Visualization of the ocular pulse in the anterior chamber of the mouse eyein vivousing phase-sensitive optical coherence tomography

Peng

Ding

et al. 2014

J. Biomed. Opt

View full text Add to dashboard Cite

mentioning

confidence: 77%

“…Accordingly, similar to the IOP, the aOP may also be affected by several factors of different frequencies such as heartbeat and respiration. 6 Therefore, it would be particularly attractive to capture the aOP at a high sensitivity and a wide frequency-band to retain the valuable information which would otherwise be lost.…”

mentioning

confidence: 99%

Visualization of the ocular pulse in the anterior chamber of the mouse eyein vivousing phase-sensitive optical coherence tomography

Peng

Ding

et al. 2014

J. Biomed. Opt

View full text Add to dashboard Cite

“…There is close correlation between CVP and IOP [117,118,130] . A parallel and instantaneous decrease in CVP and IOP was noticed with a change from Head-down (Trendelendburg) position to head-up (reverse Trendelenburg) position [117] .…”

Section: Autoregulationmentioning

confidence: 99%

“…Changes in arterial PCO2 tension can affect intraocular blood volume and IOP independent of hemodynamic changes [117][118][119][120][121] . The vascular resistance of the choroidal vessels varies directly with inhaled CO2 [122] .…”

Section: Arterial Blood Pressurementioning

confidence: 99%

Positioning patients for spine surgery: Avoiding uncommon position-related complications

Kamel

Barnette

2014

WJO

111

View full text Add to dashboard Cite

Positioning patients for spine surgery is pivotal for optimal operating conditions and operative-site exposure. During spine surgery, patients are placed in positions that are not physiologic and may lead to complications. Perioperative peripheral nerve injury (PPNI) and postoperative visual loss (POVL) are rare complications related to patient positioning during spine surgery that result in significant patient disability and functional loss. PPNI is usually due to stretch or compression of the peripheral nerve. PPNI may present as a brachial plexus injury or as an isolated injury of single nerve, most commonly the ulnar nerve. Understanding the etiology, mechanism and pattern of injury with each type of nerve injury is important for the prevention of PPNI. Intraoperative neuromonitoring has been used to detect peripheral nerve conduction abnormalities indicating peripheral nerve stress under general anesthesia and to guide modification of the upper extremity position to prevent PPNI. POVL usually results in permanent visual loss. Most cases are associated with prolonged spine procedures in the prone position under general anesthesia. The most common causes of POVL after spine surgery are ischemic optic neuropathy and central retinal artery occlusion. Posterior ischemic optic neuropathy is the most common cause of POVL after spine surgery. It is important for spine surgeons to be aware of POVL and to participate in safe, collaborative perioperative care of spine patients. Proper education of perioperative staff, combined with clear communication and collaboration while positioning patients in the operating room is the best and safest approach. The prevention of uncommon complications of spine surgery depends primarily on identifying high-risk patients, proper positioning and optimal intraoperative management of physiological parameters. Modification of risk factors extrinsic to the patient may help reduce the incidence of PPNI and POVL. It is important for spine surgeons to be aware of PPNI and POVL to participate in safe, collaborative perioperative care of spine patients. Proper education of perioperative staff, combined with clear communication and collaboration while positioning patients in the operating room is the best and safest approach. The prevention of uncommon complications of spine surgery depends primarily on identifying high-risk patients, proper positioning and optimal intraoperative management of physiological parameters.Kamel I, Barnette R. Positioning patients for spine surgery: Avoiding uncommon position-related complications. World J Orthop

show abstract

“…To maintain proper ventilation and prevent pathological hypercapnia, artificial ventilation is required. The relationship between IOP and P a CO 2 has been described (Cooper et al 1979).…”

mentioning

confidence: 99%

Influence of capnoperitoneum on intraocular pressure in spontaneously breathing dogs undergoing ovariectomy

Raušer¹,

Mrázová²,

Crha³

et al. 2017

Vet. Med. - Czech

View full text Add to dashboard Cite

ABSTRACT:The objective of this study was to evaluate potential changes in intraocular pressure in spontaneously breathing dogs undergoing laparoscopic ovariectomy with capnoperitoneum. Twenty bitches undergoing laparoscopic ovariectomy were enrolled in a prospective clinical trial. The dogs were under general anaesthesia and were breathing spontaneously throughout the entire period of the procedure. Capnoperitoneum was then established with an intra-abdominal pressure setting of 10 mmHg. Collected data included intraocular pressure, pupil size, heart rate, respiratory frequency, systolic and diastolic arterial pressure, end-tidal CO 2 , oxygen saturation of haemoglobin and tidal volume. Data were recorded 5 min before starting CO 2 -insufflation (baseline), after capnoperitoneum establishment (T0), and at further 5-min intervals (T5, T10, T15, T20, T25, T30). Compared to baseline, pupil size was increased at T30 (P = 0.03) and respiratory frequency at T25 (P < 0.01) and T30 (P = 0.02). No other significant changes were found regarding intraocular pressure. Our data show that the induction of an intra-abdominal pressure of 10 mmHg for a 30-min laparoscopy with the use of medetomidine-butorfanolpropofol-isoflurane in spontaneously breathing dogs in the horizontal position does not result in any important changes in intraocular pressure or end-tidal CO 2 .Keywords: laparoscopy; veterinary ophthalmology; pupil size; heart rate, respiratory frequency; systolic and diastolic arterial pressure; oxygen saturation of haemoglobin; tidal volume; end-tidal CO 2 List of abbreviations DAP = diastolic arterial pressure, EtCO 2 = end-tidal CO 2 , f R = respiratory frequency, HR = heart rate, IOP = intraocular pressure, PS = pupil size, SAP = systolic arterial pressure, SpO 2 = oxygen saturation of haemoglobin, V T = tidal volume

show abstract

Continual monitoring of intraocular pressure: effect of central venous pressure, respiration, and eye movements on continual recordings of intraocular pressure in the rabbit, dog, and man.

Cited by 42 publications

References 4 publications

Visualization of the ocular pulse in the anterior chamber of the mouse eyein vivousing phase-sensitive optical coherence tomography

Visualization of the ocular pulse in the anterior chamber of the mouse eyein vivousing phase-sensitive optical coherence tomography

Positioning patients for spine surgery: Avoiding uncommon position-related complications

Influence of capnoperitoneum on intraocular pressure in spontaneously breathing dogs undergoing ovariectomy

Contact Info

Product

Resources

About